├── .gitignore ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── org │ │ └── cgspine │ │ └── nestscroll │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── org │ │ │ └── cgspine │ │ │ └── nestscroll │ │ │ ├── MainActivity.java │ │ │ ├── MyRecyclerAdapter.java │ │ │ ├── Util.java │ │ │ ├── ViewHolder.java │ │ │ ├── one │ │ │ ├── EventDispatchPlanActivity.java │ │ │ ├── EventDispatchPlanLayout.java │ │ │ └── EventDispatchTargetLayout.java │ │ │ ├── three │ │ │ ├── CoordinatorLayoutActivity.java │ │ │ ├── CoverBehavior.java │ │ │ └── TargetBehavior.java │ │ │ └── two │ │ │ ├── NestingScrollActivity.java │ │ │ └── NestingScrollPlanLayout.java │ └── res │ │ ├── anim │ │ ├── decelerate_factor_interpolator.xml │ │ ├── slide_in_right.xml │ │ ├── slide_out_right.xml │ │ └── slide_still.xml │ │ ├── drawable │ │ ├── list_item_bg_with_border_bottom.xml │ │ └── list_item_bg_with_border_top_bottom.xml │ │ ├── layout │ │ ├── activity_main.xml │ │ ├── activity_plan_coordinator.xml │ │ ├── activity_plan_event_dispatch.xml │ │ └── activity_plan_nesting_scroll.xml │ │ ├── mipmap-hdpi │ │ └── ic_launcher.png │ │ ├── mipmap-mdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxxhdpi │ │ └── ic_launcher.png │ │ ├── values-w820dp │ │ └── dimens.xml │ │ └── values │ │ ├── attr.xml │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── org │ └── cgspine │ └── nestscroll │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea 5 | .DS_Store 6 | /build 7 | /captures 8 | .externalNativeBuild 9 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | 2 | **嵌套滚动Demo** 3 | 4 | 博文：http://blog.cgsdream.org/2016/12/30/android-nesting-scroll/ -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 25 5 | buildToolsVersion "25.0.0" 6 | defaultConfig { 7 | applicationId "org.cgspine.nestscroll" 8 | minSdkVersion 16 9 | targetSdkVersion 25 10 | versionCode 1 11 | versionName "1.0" 12 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | } 21 | 22 | dependencies { 23 | compile fileTree(include: ['*.jar'], dir: 'libs') 24 | androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { 25 | exclude group: 'com.android.support', module: 'support-annotations' 26 | }) 27 | compile 'com.android.support:appcompat-v7:25.1.0' 28 | testCompile 'junit:junit:4.12' 29 | compile 'com.android.support:design:25.1.0' 30 | } 31 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Users/cgspine/Library/Android/sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /app/src/androidTest/java/org/cgspine/nestscroll/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll; 2 | 3 | import android.content.Context; 4 | import android.support.test.InstrumentationRegistry; 5 | import android.support.test.runner.AndroidJUnit4; 6 | 7 | import org.junit.Test; 8 | import org.junit.runner.RunWith; 9 | 10 | import static org.junit.Assert.*; 11 | 12 | /** 13 | * Instrumentation test, which will execute on an Android device. 14 | * 15 | * @see Testing documentation 16 | */ 17 | @RunWith(AndroidJUnit4.class) 18 | public class ExampleInstrumentedTest { 19 | @Test 20 | public void useAppContext() throws Exception { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("org.cgspine.nestscroll", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/MainActivity.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll; 2 | 3 | import android.content.Intent; 4 | import android.support.v7.app.AppCompatActivity; 5 | import android.os.Bundle; 6 | import android.support.v7.widget.Toolbar; 7 | import android.view.View; 8 | import android.widget.AdapterView; 9 | import android.widget.ArrayAdapter; 10 | import android.widget.ListView; 11 | 12 | import org.cgspine.nestscroll.one.EventDispatchPlanActivity; 13 | import org.cgspine.nestscroll.three.CoordinatorLayoutActivity; 14 | import org.cgspine.nestscroll.two.NestingScrollActivity; 15 | 16 | import java.util.ArrayList; 17 | 18 | public class MainActivity extends AppCompatActivity { 19 | private Toolbar mToolbar; 20 | private ListView mListView; 21 | 22 | @Override 23 | protected void onCreate(Bundle savedInstanceState) { 24 | super.onCreate(savedInstanceState); 25 | setContentView(R.layout.activity_main); 26 | mToolbar = (Toolbar) findViewById(R.id.toolbar); 27 | setSupportActionBar(mToolbar); 28 | 29 | 30 | ArrayList mData = new ArrayList<>(); 31 | mData.add("原始事件分发方案"); 32 | mData.add("使用NestScrollParent与NestScrollChild接口"); 33 | mData.add("使用CoordinatorLayout"); 34 | mListView = (ListView) findViewById(R.id.listView); 35 | mListView.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, mData)); 36 | mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { 37 | @Override 38 | public void onItemClick(AdapterView parent, View view, int position, long id) { 39 | Intent intent = null; 40 | if(position == 0){ 41 | intent = new Intent(MainActivity.this, EventDispatchPlanActivity.class); 42 | } else if(position == 1){ 43 | intent = new Intent(MainActivity.this, NestingScrollActivity.class); 44 | } else if(position == 2){ 45 | intent = new Intent(MainActivity.this, CoordinatorLayoutActivity.class); 46 | } 47 | 48 | if(intent != null){ 49 | startActivity(intent); 50 | overridePendingTransition(R.anim.slide_in_right, R.anim.slide_still); 51 | } 52 | } 53 | }); 54 | } 55 | } 56 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/MyRecyclerAdapter.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll; 2 | 3 | import android.support.v7.widget.RecyclerView; 4 | import android.view.Gravity; 5 | import android.view.ViewGroup; 6 | import android.widget.TextView; 7 | 8 | /** 9 | * @author cginechen 10 | * @date 2016-12-29 11 | */ 12 | 13 | public class MyRecyclerAdapter extends RecyclerView.Adapter { 14 | @Override 15 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 16 | TextView textView = new TextView(parent.getContext()); 17 | textView.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 18 | Util.dp2px(parent.getContext(), 50))); 19 | textView.setBackgroundResource(R.drawable.list_item_bg_with_border_bottom); 20 | int paddingHor = Util.dp2px(parent.getContext(), 16); 21 | textView.setPadding(paddingHor, 0, paddingHor, 0); 22 | textView.setGravity(Gravity.CENTER_VERTICAL); 23 | textView.setTextSize(16); 24 | return new ViewHolder(textView); 25 | } 26 | 27 | @Override 28 | public void onBindViewHolder(ViewHolder holder, int position) { 29 | holder.setText("item " + position); 30 | } 31 | 32 | 33 | @Override 34 | public int getItemCount() { 35 | return 50; 36 | } 37 | } 38 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/Util.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll; 2 | 3 | import android.content.Context; 4 | import android.util.DisplayMetrics; 5 | import android.view.WindowManager; 6 | 7 | /** 8 | * @author cginechen 9 | * @date 2016-12-27 10 | */ 11 | 12 | public class Util { 13 | 14 | /** 15 | * DisplayMetrics 16 | * @return 17 | */ 18 | public static DisplayMetrics getDisplayMetrics(Context context){ 19 | DisplayMetrics displayMetrics = new DisplayMetrics(); 20 | ((WindowManager) context.getApplicationContext().getSystemService(Context.WINDOW_SERVICE)) 21 | .getDefaultDisplay().getMetrics(displayMetrics); 22 | return displayMetrics; 23 | } 24 | 25 | 26 | /** 27 | * 屏幕密度 28 | */ 29 | public static float sDensity = 0f; 30 | public static float getDensity(Context context){ 31 | if(sDensity == 0f){ 32 | sDensity = getDisplayMetrics(context).density; 33 | } 34 | return sDensity; 35 | } 36 | 37 | /** 38 | * 单位转换: dp -> px 39 | * @param dp 40 | * @return 41 | */ 42 | public static int dp2px(Context context, int dp){ 43 | return (int) (getDensity(context) * dp + 0.5); 44 | } 45 | 46 | /** 47 | * 单位转换:px -> dp 48 | * @param px 49 | * @return 50 | */ 51 | public static int px2dp(Context context,int px){ 52 | return (int) (px/getDensity(context) + 0.5); 53 | } 54 | } 55 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/ViewHolder.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll; 2 | 3 | import android.support.v7.widget.RecyclerView; 4 | import android.widget.TextView; 5 | 6 | /** 7 | * @author cginechen 8 | * @date 2016-12-29 9 | */ 10 | 11 | public class ViewHolder extends RecyclerView.ViewHolder { 12 | 13 | private TextView mItemView; 14 | 15 | public ViewHolder(TextView itemView) { 16 | super(itemView); 17 | mItemView = itemView; 18 | } 19 | 20 | public void setText(String text) { 21 | mItemView.setText(text); 22 | } 23 | } 24 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/one/EventDispatchPlanActivity.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll.one; 2 | 3 | import android.os.Bundle; 4 | import android.support.annotation.Nullable; 5 | import android.support.v7.app.AppCompatActivity; 6 | import android.support.v7.widget.Toolbar; 7 | import android.view.MenuItem; 8 | 9 | import org.cgspine.nestscroll.R; 10 | 11 | /** 12 | * @author cginechen 13 | * @date 2016-12-27 14 | */ 15 | 16 | public class EventDispatchPlanActivity extends AppCompatActivity { 17 | private Toolbar mToolbar; 18 | 19 | 20 | @Override 21 | protected void onCreate(@Nullable Bundle savedInstanceState) { 22 | super.onCreate(savedInstanceState); 23 | setContentView(R.layout.activity_plan_event_dispatch); 24 | mToolbar = (Toolbar) findViewById(R.id.toolbar); 25 | setSupportActionBar(mToolbar); 26 | getSupportActionBar().setDisplayHomeAsUpEnabled(true); 27 | getSupportActionBar().setDisplayShowHomeEnabled(true); 28 | } 29 | 30 | @Override 31 | public boolean onOptionsItemSelected(MenuItem item) { 32 | if (item.getItemId() == android.R.id.home) { 33 | finish(); 34 | overridePendingTransition(R.anim.slide_still, R.anim.slide_out_right); 35 | } 36 | 37 | return super.onOptionsItemSelected(item); 38 | } 39 | } 40 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/one/EventDispatchPlanLayout.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll.one; 2 | 3 | import android.content.Context; 4 | import android.content.res.TypedArray; 5 | import android.support.v4.view.MotionEventCompat; 6 | import android.support.v4.view.ViewCompat; 7 | import android.util.AttributeSet; 8 | import android.util.Log; 9 | import android.view.MotionEvent; 10 | import android.view.VelocityTracker; 11 | import android.view.View; 12 | import android.view.ViewConfiguration; 13 | import android.view.ViewGroup; 14 | import android.widget.Scroller; 15 | 16 | import org.cgspine.nestscroll.R; 17 | import org.cgspine.nestscroll.Util; 18 | 19 | /** 20 | * @author cginechen 21 | * @date 2016-12-27 22 | */ 23 | 24 | public class EventDispatchPlanLayout extends ViewGroup { 25 | private static final String TAG = "EventDispatchPlanLayout"; 26 | private static final int INVALID_POINTER = -1; 27 | 28 | private int mHeaderViewId = 0; 29 | private int mTargetViewId = 0; 30 | private View mHeaderView; 31 | private View mTargetView; 32 | private ITargetView mTarget; 33 | 34 | private int mTouchSlop; 35 | 36 | private int mHeaderInitOffset; 37 | private int mHeaderCurrentOffset; 38 | private int mHeaderEndOffset = 0; 39 | 40 | private int mTargetInitOffset; 41 | private int mTargetCurrentOffset; 42 | private int mTargetEndOffset = 0; 43 | 44 | private int mActivePointerId = INVALID_POINTER; 45 | private boolean mIsDragging; 46 | private float mInitialDownY; 47 | private float mInitialMotionY; 48 | private float mLastMotionY; 49 | 50 | private VelocityTracker mVelocityTracker; 51 | private float mMaxVelocity; 52 | 53 | private Scroller mScroller; 54 | private boolean mNeedScrollToInitPos = false; 55 | private boolean mNeedScrollToEndPos = false; 56 | 57 | public EventDispatchPlanLayout(Context context) { 58 | this(context, null); 59 | } 60 | 61 | public EventDispatchPlanLayout(Context context, AttributeSet attrs) { 62 | super(context, attrs); 63 | TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.EventDispatchPlanLayout, 0, 0); 64 | mHeaderViewId = array.getResourceId(R.styleable.EventDispatchPlanLayout_header_view, 0); 65 | mTargetViewId = array.getResourceId(R.styleable.EventDispatchPlanLayout_target_view, 0); 66 | 67 | mHeaderInitOffset = array.getDimensionPixelSize(R.styleable. 68 | EventDispatchPlanLayout_header_init_offset, Util.dp2px(getContext(), 20)); 69 | mTargetInitOffset = array.getDimensionPixelSize(R.styleable. 70 | EventDispatchPlanLayout_target_init_offset, Util.dp2px(getContext(), 40)); 71 | mHeaderCurrentOffset = mHeaderInitOffset; 72 | mTargetCurrentOffset = mTargetInitOffset; 73 | array.recycle(); 74 | 75 | ViewCompat.setChildrenDrawingOrderEnabled(this, true); 76 | 77 | final ViewConfiguration vc = ViewConfiguration.get(getContext()); 78 | mMaxVelocity = vc.getScaledMaximumFlingVelocity(); 79 | mTouchSlop = Util.px2dp(context, vc.getScaledTouchSlop()); //系统的值是8dp,太大了。。。 80 | 81 | mScroller = new Scroller(getContext()); 82 | mScroller.setFriction(0.98f); 83 | } 84 | 85 | @Override 86 | protected void onFinishInflate() { 87 | super.onFinishInflate(); 88 | if (mHeaderViewId != 0) { 89 | mHeaderView = findViewById(mHeaderViewId); 90 | } 91 | if (mTargetViewId != 0) { 92 | mTargetView = findViewById(mTargetViewId); 93 | ensureTarget(); 94 | } 95 | } 96 | 97 | private void ensureTarget() { 98 | if (mTargetView instanceof ITargetView) { 99 | mTarget = (ITargetView) mTargetView; 100 | } else { 101 | throw new RuntimeException("TargetView should implement interface ITargetView"); 102 | } 103 | } 104 | 105 | private void ensureHeaderViewAndScrollView() { 106 | if (mHeaderView != null && mTargetView != null) { 107 | return; 108 | } 109 | if (mHeaderView == null && mTargetView == null && getChildCount() >= 2) { 110 | mHeaderView = getChildAt(0); 111 | mTargetView = getChildAt(1); 112 | ensureTarget(); 113 | return; 114 | } 115 | throw new RuntimeException("please ensure headerView and scrollView"); 116 | } 117 | 118 | @Override 119 | protected int getChildDrawingOrder(int childCount, int i) { 120 | ensureHeaderViewAndScrollView(); 121 | int headerIndex = indexOfChild(mHeaderView); 122 | int scrollIndex = indexOfChild(mTargetView); 123 | if (headerIndex < scrollIndex) { 124 | return i; 125 | } 126 | if (headerIndex == i) { 127 | return scrollIndex; 128 | } else if (scrollIndex == i) { 129 | return headerIndex; 130 | } 131 | return i; 132 | } 133 | 134 | @Override 135 | public void requestDisallowInterceptTouchEvent(boolean b) { 136 | // 去掉默认行为，使得每个事件都会经过这个Layout 137 | } 138 | 139 | @Override 140 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 141 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); 142 | ensureHeaderViewAndScrollView(); 143 | int scrollMeasureWidthSpec = MeasureSpec.makeMeasureSpec( 144 | getMeasuredWidth() - getPaddingLeft() - getPaddingRight(), MeasureSpec.EXACTLY); 145 | int scrollMeasureHeightSpec = MeasureSpec.makeMeasureSpec( 146 | getMeasuredHeight() - getPaddingTop() - getPaddingBottom(), MeasureSpec.EXACTLY); 147 | mTargetView.measure(scrollMeasureWidthSpec, scrollMeasureHeightSpec); 148 | measureChild(mHeaderView, widthMeasureSpec, heightMeasureSpec); 149 | } 150 | 151 | @Override 152 | protected void onLayout(boolean changed, int l, int t, int r, int b) { 153 | final int width = getMeasuredWidth(); 154 | final int height = getMeasuredHeight(); 155 | if (getChildCount() == 0) { 156 | return; 157 | } 158 | ensureHeaderViewAndScrollView(); 159 | 160 | final int childLeft = getPaddingLeft(); 161 | final int childTop = getPaddingTop(); 162 | final int childWidth = width - getPaddingLeft() - getPaddingRight(); 163 | final int childHeight = height - getPaddingTop() - getPaddingBottom(); 164 | mTargetView.layout(childLeft, childTop + mTargetCurrentOffset, 165 | childLeft + childWidth, childTop + childHeight + mTargetCurrentOffset); 166 | int refreshViewWidth = mHeaderView.getMeasuredWidth(); 167 | int refreshViewHeight = mHeaderView.getMeasuredHeight(); 168 | mHeaderView.layout((width / 2 - refreshViewWidth / 2), mHeaderCurrentOffset, 169 | (width / 2 + refreshViewWidth / 2), mHeaderCurrentOffset + refreshViewHeight); 170 | } 171 | 172 | 173 | @Override 174 | public boolean onInterceptTouchEvent(MotionEvent ev) { 175 | ensureHeaderViewAndScrollView(); 176 | final int action = MotionEventCompat.getActionMasked(ev); 177 | int pointerIndex; 178 | 179 | if (!isEnabled() || mTarget.canChildScrollUp()) { 180 | Log.d(TAG, "fast end onIntercept: isEnabled = " + isEnabled() + "; canChildScrollUp = " 181 | + mTarget.canChildScrollUp()); 182 | return false; 183 | } 184 | switch (action) { 185 | case MotionEvent.ACTION_DOWN: 186 | mActivePointerId = ev.getPointerId(0); 187 | mIsDragging = false; 188 | pointerIndex = ev.findPointerIndex(mActivePointerId); 189 | if (pointerIndex < 0) { 190 | return false; 191 | } 192 | mInitialDownY = ev.getY(pointerIndex); 193 | break; 194 | 195 | case MotionEvent.ACTION_MOVE: 196 | pointerIndex = ev.findPointerIndex(mActivePointerId); 197 | if (pointerIndex < 0) { 198 | Log.e(TAG, "Got ACTION_MOVE event but have an invalid active pointer id."); 199 | return false; 200 | } 201 | 202 | final float y = ev.getY(pointerIndex); 203 | startDragging(y); 204 | break; 205 | 206 | case MotionEventCompat.ACTION_POINTER_UP: 207 | onSecondaryPointerUp(ev); 208 | break; 209 | 210 | case MotionEvent.ACTION_UP: 211 | case MotionEvent.ACTION_CANCEL: 212 | mIsDragging = false; 213 | mActivePointerId = INVALID_POINTER; 214 | break; 215 | } 216 | 217 | return mIsDragging; 218 | } 219 | 220 | @Override 221 | public boolean onTouchEvent(MotionEvent ev) { 222 | final int action = MotionEventCompat.getActionMasked(ev); 223 | int pointerIndex; 224 | 225 | if (!isEnabled() || mTarget.canChildScrollUp()) { 226 | Log.d(TAG, "fast end onTouchEvent: isEnabled = " + isEnabled() + "; canChildScrollUp = " 227 | + mTarget.canChildScrollUp()); 228 | return false; 229 | } 230 | 231 | acquireVelocityTracker(ev); 232 | 233 | switch (action) { 234 | case MotionEvent.ACTION_DOWN: 235 | mActivePointerId = ev.getPointerId(0); 236 | mIsDragging = false; 237 | break; 238 | 239 | case MotionEvent.ACTION_MOVE: { 240 | pointerIndex = ev.findPointerIndex(mActivePointerId); 241 | if (pointerIndex < 0) { 242 | Log.e(TAG, "Got ACTION_MOVE event but have an invalid active pointer id."); 243 | return false; 244 | } 245 | final float y = ev.getY(pointerIndex); 246 | startDragging(y); 247 | 248 | if (mIsDragging) { 249 | float dy = y - mLastMotionY; 250 | if (dy >= 0) { 251 | moveTargetView(dy); 252 | } else { 253 | if (mTargetCurrentOffset + dy <= mTargetEndOffset) { 254 | moveTargetView(dy); 255 | // 重新dispatch一次down事件，使得列表可以继续滚动 256 | int oldAction = ev.getAction(); 257 | ev.setAction(MotionEvent.ACTION_DOWN); 258 | dispatchTouchEvent(ev); 259 | ev.setAction(oldAction); 260 | } else { 261 | moveTargetView(dy); 262 | } 263 | } 264 | mLastMotionY = y; 265 | } 266 | break; 267 | } 268 | case MotionEventCompat.ACTION_POINTER_DOWN: { 269 | pointerIndex = MotionEventCompat.getActionIndex(ev); 270 | if (pointerIndex < 0) { 271 | Log.e(TAG, "Got ACTION_POINTER_DOWN event but have an invalid action index."); 272 | return false; 273 | } 274 | mActivePointerId = ev.getPointerId(pointerIndex); 275 | break; 276 | } 277 | 278 | case MotionEventCompat.ACTION_POINTER_UP: 279 | onSecondaryPointerUp(ev); 280 | break; 281 | 282 | case MotionEvent.ACTION_UP: { 283 | pointerIndex = ev.findPointerIndex(mActivePointerId); 284 | if (pointerIndex < 0) { 285 | Log.e(TAG, "Got ACTION_UP event but don't have an active pointer id."); 286 | return false; 287 | } 288 | 289 | if (mIsDragging) { 290 | mIsDragging = false; 291 | mVelocityTracker.computeCurrentVelocity(1000, mMaxVelocity); 292 | final float vy = mVelocityTracker.getYVelocity(mActivePointerId); 293 | finishDrag((int) vy); 294 | } 295 | mActivePointerId = INVALID_POINTER; 296 | releaseVelocityTracker(); 297 | return false; 298 | } 299 | case MotionEvent.ACTION_CANCEL: 300 | releaseVelocityTracker(); 301 | return false; 302 | } 303 | 304 | return mIsDragging; 305 | } 306 | 307 | private void acquireVelocityTracker(final MotionEvent event) { 308 | if (null == mVelocityTracker) { 309 | mVelocityTracker = VelocityTracker.obtain(); 310 | } 311 | mVelocityTracker.addMovement(event); 312 | } 313 | 314 | private void releaseVelocityTracker() { 315 | if (null != mVelocityTracker) { 316 | mVelocityTracker.clear(); 317 | mVelocityTracker.recycle(); 318 | mVelocityTracker = null; 319 | } 320 | } 321 | 322 | private void finishDrag(int vy) { 323 | Log.i(TAG, "TouchUp: vy = " + vy); 324 | if (vy > 0) { 325 | mNeedScrollToInitPos = true; 326 | mScroller.fling(0, mTargetCurrentOffset, 0, vy, 327 | 0, 0, mTargetEndOffset, Integer.MAX_VALUE); 328 | invalidate(); 329 | } else if (vy < 0) { 330 | mNeedScrollToEndPos = true; 331 | mScroller.fling(0, mTargetCurrentOffset, 0, vy, 332 | 0, 0, mTargetEndOffset, Integer.MAX_VALUE); 333 | invalidate(); 334 | } else { 335 | if (mTargetCurrentOffset <= (mTargetEndOffset + mTargetInitOffset) / 2) { 336 | mNeedScrollToEndPos = true; 337 | } else { 338 | mNeedScrollToInitPos = true; 339 | } 340 | invalidate(); 341 | } 342 | } 343 | 344 | private void startDragging(float y) { 345 | if (y > mInitialDownY || mTargetCurrentOffset > mTargetEndOffset) { 346 | final float yDiff = Math.abs(y - mInitialDownY); 347 | if (yDiff > mTouchSlop && !mIsDragging) { 348 | mInitialMotionY = mInitialDownY + mTouchSlop; 349 | mLastMotionY = mInitialMotionY; 350 | mIsDragging = true; 351 | } 352 | } 353 | } 354 | 355 | private void onSecondaryPointerUp(MotionEvent ev) { 356 | final int pointerIndex = MotionEventCompat.getActionIndex(ev); 357 | final int pointerId = ev.getPointerId(pointerIndex); 358 | if (pointerId == mActivePointerId) { 359 | // This was our active pointer going up. Choose a new 360 | // active pointer and adjust accordingly. 361 | final int newPointerIndex = pointerIndex == 0 ? 1 : 0; 362 | mActivePointerId = ev.getPointerId(newPointerIndex); 363 | } 364 | } 365 | 366 | private void moveTargetView(float dy) { 367 | int target = (int) (mTargetCurrentOffset + dy); 368 | moveTargetViewTo(target); 369 | } 370 | 371 | private void moveTargetViewTo(int target) { 372 | target = Math.max(target, mTargetEndOffset); 373 | ViewCompat.offsetTopAndBottom(mTargetView, target - mTargetCurrentOffset); 374 | mTargetCurrentOffset = target; 375 | 376 | int headerTarget; 377 | if (mTargetCurrentOffset >= mTargetInitOffset) { 378 | headerTarget = mHeaderInitOffset; 379 | } else if (mTargetCurrentOffset <= mTargetEndOffset) { 380 | headerTarget = mHeaderEndOffset; 381 | } else { 382 | float percent = (mTargetCurrentOffset - mTargetEndOffset) * 1.0f / mTargetInitOffset - mTargetEndOffset; 383 | headerTarget = (int) (mHeaderEndOffset + percent * (mHeaderInitOffset - mHeaderEndOffset)); 384 | } 385 | ViewCompat.offsetTopAndBottom(mHeaderView, headerTarget - mHeaderCurrentOffset); 386 | mHeaderCurrentOffset = headerTarget; 387 | } 388 | 389 | public interface ITargetView { 390 | boolean canChildScrollUp(); 391 | 392 | void fling(float vy); 393 | } 394 | 395 | @Override 396 | public void computeScroll() { 397 | if (mScroller.computeScrollOffset()) { 398 | int offsetY = mScroller.getCurrY(); 399 | moveTargetViewTo(offsetY); 400 | invalidate(); 401 | } else if (mNeedScrollToInitPos) { 402 | mNeedScrollToInitPos = false; 403 | if (mTargetCurrentOffset == mTargetInitOffset) { 404 | return; 405 | } 406 | mScroller.startScroll(0, mTargetCurrentOffset, 0, mTargetInitOffset - mTargetCurrentOffset); 407 | invalidate(); 408 | } else if (mNeedScrollToEndPos) { 409 | mNeedScrollToEndPos = false; 410 | if (mTargetCurrentOffset == mTargetEndOffset) { 411 | if (mScroller.getCurrVelocity() > 0) { 412 | // 如果还有速度，则传递给子view 413 | mTarget.fling(-mScroller.getCurrVelocity()); 414 | } 415 | } 416 | mScroller.startScroll(0, mTargetCurrentOffset, 0, mTargetEndOffset - mTargetCurrentOffset); 417 | invalidate(); 418 | } 419 | } 420 | } 421 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/one/EventDispatchTargetLayout.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll.one; 2 | 3 | import android.content.Context; 4 | import android.support.design.widget.TabLayout; 5 | import android.support.v4.view.PagerAdapter; 6 | import android.support.v4.view.ViewCompat; 7 | import android.support.v4.view.ViewPager; 8 | import android.util.AttributeSet; 9 | import android.util.SparseArray; 10 | import android.view.View; 11 | import android.view.ViewGroup; 12 | import android.widget.ArrayAdapter; 13 | import android.widget.LinearLayout; 14 | import android.widget.ListView; 15 | 16 | import org.cgspine.nestscroll.R; 17 | 18 | import java.util.ArrayList; 19 | 20 | /** 21 | * @author cginechen 22 | * @date 2016-12-28 23 | */ 24 | 25 | public class EventDispatchTargetLayout extends LinearLayout 26 | implements EventDispatchPlanLayout.ITargetView { 27 | 28 | private TabLayout mTabLayout; 29 | private ViewPager mViewPager; 30 | private SparseArray mPageMap = new SparseArray<>(); 31 | private ArrayList mData = new ArrayList<>(); 32 | 33 | 34 | private ListView getPageView(int pos) { 35 | ListView view = mPageMap.get(pos); 36 | if (view == null) { 37 | ListView listView = new ListView(getContext()); 38 | listView.setAdapter(new ArrayAdapter<>(getContext(), android.R.layout.simple_list_item_1, mData)); 39 | mPageMap.put(pos, listView); 40 | return listView; 41 | } 42 | return view; 43 | } 44 | 45 | public EventDispatchTargetLayout(Context context) { 46 | this(context, null); 47 | } 48 | 49 | public EventDispatchTargetLayout(Context context, AttributeSet attrs) { 50 | super(context, attrs); 51 | } 52 | 53 | @Override 54 | protected void onFinishInflate() { 55 | super.onFinishInflate(); 56 | mTabLayout = (TabLayout) findViewById(R.id.tab_layout); 57 | mViewPager = (ViewPager) findViewById(R.id.viewpager); 58 | for (int i = 0; i < 50; i++) { 59 | mData.add("item " + i); 60 | } 61 | mViewPager.setAdapter(mPagerAdapter); 62 | mTabLayout.setupWithViewPager(mViewPager); 63 | } 64 | 65 | private PagerAdapter mPagerAdapter = new PagerAdapter() { 66 | @Override 67 | public boolean isViewFromObject(View view, Object object) { 68 | return view == object; 69 | } 70 | 71 | @Override 72 | public int getCount() { 73 | return 3; 74 | } 75 | 76 | @Override 77 | public Object instantiateItem(final ViewGroup container, int position) { 78 | View view = getPageView(position); 79 | ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); 80 | container.addView(view, params); 81 | return view; 82 | } 83 | 84 | @Override 85 | public void destroyItem(ViewGroup container, int position, Object object) { 86 | container.removeView((View) object); 87 | } 88 | 89 | @Override 90 | public CharSequence getPageTitle(int position) { 91 | return "item " + (position + 1); 92 | } 93 | }; 94 | 95 | @Override 96 | public boolean canChildScrollUp() { 97 | if (mViewPager == null) { 98 | return false; 99 | } 100 | int currentItem = mViewPager.getCurrentItem(); 101 | ListView listView = mPageMap.get(currentItem); 102 | if (listView == null) { 103 | return false; 104 | } 105 | if (android.os.Build.VERSION.SDK_INT < 14) { 106 | return listView.getChildCount() > 0 107 | && (listView.getFirstVisiblePosition() > 0 || listView.getChildAt(0) 108 | .getTop() < listView.getPaddingTop()); 109 | } else { 110 | return ViewCompat.canScrollVertically(listView, -1); 111 | } 112 | } 113 | 114 | @Override 115 | public void fling(float vy) { 116 | if (mViewPager == null) { 117 | return; 118 | } 119 | int currentItem = mViewPager.getCurrentItem(); 120 | ListView listView = mPageMap.get(currentItem); 121 | if (listView == null) { 122 | return; 123 | } 124 | if(android.os.Build.VERSION.SDK_INT >= 21){ 125 | listView.fling((int) -vy); 126 | }else { 127 | // 可以调动第三方的实现，这里就先不管了 128 | } 129 | 130 | } 131 | } 132 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/three/CoordinatorLayoutActivity.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll.three; 2 | 3 | import android.os.Bundle; 4 | import android.support.annotation.Nullable; 5 | import android.support.design.widget.CoordinatorLayout; 6 | import android.support.design.widget.TabLayout; 7 | import android.support.v4.view.PagerAdapter; 8 | import android.support.v4.view.ViewPager; 9 | import android.support.v7.app.AppCompatActivity; 10 | import android.support.v7.widget.LinearLayoutManager; 11 | import android.support.v7.widget.RecyclerView; 12 | import android.support.v7.widget.Toolbar; 13 | import android.util.SparseArray; 14 | import android.view.MenuItem; 15 | import android.view.View; 16 | import android.view.ViewGroup; 17 | import android.widget.LinearLayout; 18 | 19 | import org.cgspine.nestscroll.MyRecyclerAdapter; 20 | import org.cgspine.nestscroll.R; 21 | import org.cgspine.nestscroll.Util; 22 | 23 | /** 24 | * @author cginechen 25 | * @date 2016-12-29 26 | */ 27 | 28 | public class CoordinatorLayoutActivity extends AppCompatActivity { 29 | private Toolbar mToolbar; 30 | private View mHeaderView; 31 | private LinearLayout mTargetLayout; 32 | private TabLayout mTabLayout; 33 | private ViewPager mViewPager; 34 | private SparseArray mPageMap = new SparseArray<>(); 35 | 36 | @Override 37 | protected void onCreate(@Nullable Bundle savedInstanceState) { 38 | super.onCreate(savedInstanceState); 39 | setContentView(R.layout.activity_plan_coordinator); 40 | mToolbar = (Toolbar) findViewById(R.id.toolbar); 41 | setSupportActionBar(mToolbar); 42 | getSupportActionBar().setDisplayHomeAsUpEnabled(true); 43 | getSupportActionBar().setDisplayShowHomeEnabled(true); 44 | 45 | mHeaderView = findViewById(R.id.book_header); 46 | CoordinatorLayout.LayoutParams headerLp = (CoordinatorLayout.LayoutParams) mHeaderView 47 | .getLayoutParams(); 48 | headerLp.setBehavior(new CoverBehavior(Util.dp2px(this, 30), 0)); 49 | 50 | mTargetLayout = (LinearLayout) findViewById(R.id.scroll_view); 51 | CoordinatorLayout.LayoutParams targetLp = (CoordinatorLayout.LayoutParams) mTargetLayout 52 | .getLayoutParams(); 53 | targetLp.setBehavior(new TargetBehavior(this, Util.dp2px(this, 70), 0)); 54 | 55 | mTabLayout = (TabLayout) findViewById(R.id.tab_layout); 56 | mViewPager = (ViewPager) findViewById(R.id.viewpager); 57 | mViewPager.setAdapter(mPagerAdapter); 58 | mTabLayout.setupWithViewPager(mViewPager); 59 | } 60 | 61 | @Override 62 | public boolean onOptionsItemSelected(MenuItem item) { 63 | if (item.getItemId() == android.R.id.home) { 64 | finish(); 65 | overridePendingTransition(R.anim.slide_still, R.anim.slide_out_right); 66 | } 67 | 68 | return super.onOptionsItemSelected(item); 69 | } 70 | 71 | private RecyclerView getPageView(int pos) { 72 | RecyclerView view = mPageMap.get(pos); 73 | if (view == null) { 74 | RecyclerView recyclerView = new RecyclerView(this); 75 | recyclerView.setLayoutManager(new LinearLayoutManager(this)); 76 | recyclerView.setAdapter(new MyRecyclerAdapter()); 77 | mPageMap.put(pos, recyclerView); 78 | return recyclerView; 79 | } 80 | return view; 81 | } 82 | 83 | private PagerAdapter mPagerAdapter = new PagerAdapter() { 84 | @Override 85 | public boolean isViewFromObject(View view, Object object) { 86 | return view == object; 87 | } 88 | 89 | @Override 90 | public int getCount() { 91 | return 3; 92 | } 93 | 94 | @Override 95 | public Object instantiateItem(final ViewGroup container, int position) { 96 | View view = getPageView(position); 97 | ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); 98 | container.addView(view, params); 99 | return view; 100 | } 101 | 102 | @Override 103 | public void destroyItem(ViewGroup container, int position, Object object) { 104 | container.removeView((View) object); 105 | } 106 | 107 | @Override 108 | public CharSequence getPageTitle(int position) { 109 | return "item " + (position + 1); 110 | } 111 | }; 112 | } 113 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/three/CoverBehavior.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll.three; 2 | 3 | import android.support.design.widget.CoordinatorLayout; 4 | import android.support.v4.view.ViewCompat; 5 | import android.util.Log; 6 | import android.view.View; 7 | 8 | /** 9 | * @author cginechen 10 | * @date 2016-12-29 11 | */ 12 | 13 | public class CoverBehavior extends CoordinatorLayout.Behavior { 14 | private static final String TAG = "CoverBehavior"; 15 | private int mHeaderInitOffset; 16 | private int mHeaderCurrentOffset; 17 | private int mHeaderEndOffset; 18 | 19 | public CoverBehavior(int headerInitOffset, int headerEndOffset) { 20 | mHeaderInitOffset = headerInitOffset; 21 | mHeaderEndOffset = headerEndOffset; 22 | mHeaderCurrentOffset = mHeaderInitOffset; 23 | } 24 | 25 | @Override 26 | public boolean onLayoutChild(CoordinatorLayout parent, View child, int layoutDirection) { 27 | int width = parent.getWidth(); 28 | int childWidth = child.getMeasuredWidth(); 29 | int childHeight = child.getMeasuredHeight(); 30 | child.layout((width / 2 - childWidth / 2), mHeaderCurrentOffset, 31 | (width / 2 + childWidth / 2), mHeaderCurrentOffset + childHeight); 32 | return true; 33 | } 34 | 35 | @Override 36 | public boolean layoutDependsOn(CoordinatorLayout parent, View child, View dependency) { 37 | Log.i(TAG, "layoutDependsOn"); 38 | CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) dependency.getLayoutParams(); 39 | if (lp.getBehavior() instanceof TargetBehavior) { 40 | return true; 41 | } 42 | return super.layoutDependsOn(parent, child, dependency); 43 | } 44 | 45 | @Override 46 | public boolean onDependentViewChanged(CoordinatorLayout parent, View child, View dependency) { 47 | CoordinatorLayout.LayoutParams lp = (CoordinatorLayout.LayoutParams) dependency.getLayoutParams(); 48 | if (lp.getBehavior() instanceof TargetBehavior) { 49 | TargetBehavior behavior = (TargetBehavior) lp.getBehavior(); 50 | moveHeaderView(behavior, child); 51 | return true; 52 | } 53 | return super.onDependentViewChanged(parent, child, dependency); 54 | } 55 | 56 | 57 | private void moveHeaderView(TargetBehavior behavior, View view) { 58 | int targetInitOffset = behavior.getTargetInitOffset(); 59 | int targetEndOffset = behavior.getTargetEndOffset(); 60 | int targetCurrentOffset = behavior.getTargetCurrentOffset(); 61 | Log.i(TAG, "moveHeaderView: targetCurrentOffset = " + targetCurrentOffset); 62 | int target; 63 | if (targetCurrentOffset >= targetInitOffset) { 64 | target = mHeaderInitOffset; 65 | } else if (targetCurrentOffset <= targetEndOffset) { 66 | target = mHeaderEndOffset; 67 | } else { 68 | float percent = (targetCurrentOffset - targetEndOffset) * 1.0f / targetInitOffset - targetEndOffset; 69 | target = (int) (mHeaderEndOffset + percent * (mHeaderInitOffset - mHeaderEndOffset)); 70 | } 71 | ViewCompat.offsetTopAndBottom(view, target - mHeaderCurrentOffset); 72 | mHeaderCurrentOffset = target; 73 | } 74 | } 75 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/three/TargetBehavior.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll.three; 2 | 3 | import android.content.Context; 4 | import android.support.design.widget.CoordinatorLayout; 5 | import android.support.v4.view.ViewCompat; 6 | import android.util.Log; 7 | import android.view.View; 8 | import android.widget.Scroller; 9 | 10 | /** 11 | * @author cginechen 12 | * @date 2016-12-29 13 | */ 14 | 15 | public class TargetBehavior extends CoordinatorLayout.Behavior { 16 | private static final String TAG = "TargetBehavior"; 17 | private int mTargetInitOffset; 18 | private int mTargetCurrentOffset; 19 | private int mTargetEndOffset = 0; 20 | private boolean mHasFling = false; 21 | private boolean mNeedScrollToInitPos = false; 22 | private boolean mNeedScrollToEndPos = false; 23 | private Scroller mScroller; 24 | 25 | public TargetBehavior(Context context, int initOffset, int endOffset) { 26 | mTargetInitOffset = initOffset; 27 | mTargetEndOffset = endOffset; 28 | mTargetCurrentOffset = mTargetInitOffset; 29 | mScroller = new Scroller(context); 30 | mScroller.setFriction(0.98f); 31 | } 32 | 33 | @Override 34 | public boolean onLayoutChild(CoordinatorLayout parent, View child, int layoutDirection) { 35 | CoordinatorLayout.LayoutParams params = (CoordinatorLayout.LayoutParams) child.getLayoutParams(); 36 | if (params != null && params.height == CoordinatorLayout.LayoutParams.MATCH_PARENT) { 37 | child.layout(0, mTargetCurrentOffset, parent.getWidth(), parent.getHeight() + mTargetCurrentOffset); 38 | return true; 39 | } 40 | 41 | return super.onLayoutChild(parent, child, layoutDirection); 42 | } 43 | 44 | @Override 45 | public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, View child, View directTargetChild, View target, int nestedScrollAxes) { 46 | return (nestedScrollAxes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0; 47 | } 48 | 49 | @Override 50 | public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, View child, View target, 51 | int dx, int dy, int[] consumed) { 52 | Log.i(TAG, "onNestedPreScroll: dy = " + dy); 53 | // 在这个方法里面只处理向上滑动 54 | if (canViewScrollUp(target) || dy <= 0) { 55 | return; 56 | } 57 | // 在这个方法里只处理上滑 58 | if (dy > 0) { 59 | int parentCanConsume = mTargetCurrentOffset - mTargetEndOffset; 60 | if (parentCanConsume > 0) { 61 | if (dy > parentCanConsume) { 62 | consumed[1] = parentCanConsume; 63 | moveTargetViewTo(child, mTargetEndOffset); 64 | } else { 65 | consumed[1] = dy; 66 | moveTargetView(child, -dy); 67 | } 68 | } 69 | } 70 | } 71 | 72 | @Override 73 | public void onNestedScroll(CoordinatorLayout coordinatorLayout, View child, View target, 74 | int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) { 75 | Log.i(TAG, "onNestedScroll: dyUnconsumed = " + dyUnconsumed); 76 | // 在这个方法里只处理向下滑动 77 | if (dyUnconsumed < 0 && !(canViewScrollUp(target))) { 78 | int dy = -dyUnconsumed; 79 | moveTargetView(child, dy); 80 | } 81 | } 82 | 83 | @Override 84 | public boolean onNestedPreFling(CoordinatorLayout coordinatorLayout, View child, View target, 85 | float velocityX, float velocityY) { 86 | Log.i(TAG, "onNestedPreFling: mTargetCurrentOffset = " + mTargetCurrentOffset + 87 | " ; velocityX = " + velocityX + " ; velocityY = " + velocityY); 88 | mHasFling = true; 89 | int vy = (int) -velocityY; 90 | if (velocityY < 0) { 91 | // 向下 92 | if (canViewScrollUp(target)) { 93 | return false; 94 | } 95 | mNeedScrollToInitPos = true; 96 | mScroller.fling(0, mTargetCurrentOffset, 0, vy, 97 | 0, 0, mTargetEndOffset, Integer.MAX_VALUE); 98 | ViewCompat.postOnAnimation(child, new ScrollAction(child)); 99 | return true; 100 | } else { 101 | // 向上 102 | if (mTargetCurrentOffset <= mTargetEndOffset) { 103 | return false; 104 | } 105 | mNeedScrollToEndPos = true; 106 | mScroller.fling(0, mTargetCurrentOffset, 0, vy, 107 | 0, 0, mTargetEndOffset, Integer.MAX_VALUE); 108 | ViewCompat.postOnAnimation(child, new ScrollAction(child)); 109 | } 110 | return false; 111 | } 112 | 113 | @Override 114 | public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, View child, View target) { 115 | super.onStopNestedScroll(coordinatorLayout, child, target); 116 | if (mHasFling) { 117 | mHasFling = false; 118 | } else { 119 | if (mTargetCurrentOffset <= (mTargetEndOffset + mTargetInitOffset) / 2) { 120 | 121 | mNeedScrollToEndPos = true; 122 | } else { 123 | mNeedScrollToInitPos = true; 124 | } 125 | ViewCompat.postOnAnimation(child, new ScrollAction(child)); 126 | } 127 | } 128 | 129 | private boolean canViewScrollUp(View view) { 130 | return ViewCompat.canScrollVertically(view, -1); 131 | } 132 | 133 | private void moveTargetView(View child, int dy) { 134 | int target = mTargetCurrentOffset + dy; 135 | moveTargetViewTo(child, target); 136 | } 137 | 138 | private void moveTargetViewTo(View child, int target) { 139 | target = Math.max(target, mTargetEndOffset); 140 | ViewCompat.offsetTopAndBottom(child, target - mTargetCurrentOffset); 141 | mTargetCurrentOffset = target; 142 | } 143 | 144 | public int getTargetCurrentOffset() { 145 | return mTargetCurrentOffset; 146 | } 147 | 148 | public int getTargetInitOffset() { 149 | return mTargetInitOffset; 150 | } 151 | 152 | public int getTargetEndOffset() { 153 | return mTargetEndOffset; 154 | } 155 | 156 | private class ScrollAction implements Runnable { 157 | private View mView; 158 | 159 | public ScrollAction(View view) { 160 | mView = view; 161 | } 162 | 163 | @Override 164 | public void run() { 165 | if (mScroller.computeScrollOffset()) { 166 | int offsetY = mScroller.getCurrY(); 167 | moveTargetViewTo(mView, offsetY); 168 | ViewCompat.postOnAnimation(mView, new ScrollAction(mView)); 169 | } else if (mNeedScrollToInitPos) { 170 | mNeedScrollToInitPos = false; 171 | if (mTargetCurrentOffset == mTargetInitOffset) { 172 | return; 173 | } 174 | mScroller.startScroll(0, mTargetCurrentOffset, 0, mTargetInitOffset - mTargetCurrentOffset); 175 | ViewCompat.postOnAnimation(mView, new ScrollAction(mView)); 176 | } else if (mNeedScrollToEndPos) { 177 | mNeedScrollToEndPos = false; 178 | if (mTargetCurrentOffset == mTargetEndOffset) { 179 | return; 180 | } 181 | mScroller.startScroll(0, mTargetCurrentOffset, 0, mTargetEndOffset - mTargetCurrentOffset); 182 | ViewCompat.postOnAnimation(mView, new ScrollAction(mView)); 183 | } 184 | } 185 | } 186 | } 187 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/two/NestingScrollActivity.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll.two; 2 | 3 | import android.os.Bundle; 4 | import android.support.annotation.Nullable; 5 | import android.support.design.widget.TabLayout; 6 | import android.support.v4.view.PagerAdapter; 7 | import android.support.v4.view.ViewPager; 8 | import android.support.v7.app.AppCompatActivity; 9 | import android.support.v7.widget.LinearLayoutManager; 10 | import android.support.v7.widget.RecyclerView; 11 | import android.support.v7.widget.Toolbar; 12 | import android.util.SparseArray; 13 | import android.view.Gravity; 14 | import android.view.MenuItem; 15 | import android.view.View; 16 | import android.view.ViewGroup; 17 | import android.widget.TextView; 18 | 19 | import org.cgspine.nestscroll.MyRecyclerAdapter; 20 | import org.cgspine.nestscroll.R; 21 | import org.cgspine.nestscroll.Util; 22 | 23 | /** 24 | * @author cginechen 25 | * @date 2016-12-28 26 | */ 27 | 28 | public class NestingScrollActivity extends AppCompatActivity { 29 | private Toolbar mToolbar; 30 | private TabLayout mTabLayout; 31 | private ViewPager mViewPager; 32 | private SparseArray mPageMap = new SparseArray<>(); 33 | 34 | 35 | @Override 36 | protected void onCreate(@Nullable Bundle savedInstanceState) { 37 | super.onCreate(savedInstanceState); 38 | setContentView(R.layout.activity_plan_nesting_scroll); 39 | mToolbar = (Toolbar) findViewById(R.id.toolbar); 40 | setSupportActionBar(mToolbar); 41 | getSupportActionBar().setDisplayHomeAsUpEnabled(true); 42 | getSupportActionBar().setDisplayShowHomeEnabled(true); 43 | mTabLayout = (TabLayout) findViewById(R.id.tab_layout); 44 | mViewPager = (ViewPager) findViewById(R.id.viewpager); 45 | mViewPager.setAdapter(mPagerAdapter); 46 | mTabLayout.setupWithViewPager(mViewPager); 47 | } 48 | 49 | @Override 50 | public boolean onOptionsItemSelected(MenuItem item) { 51 | if (item.getItemId() == android.R.id.home) { 52 | finish(); 53 | overridePendingTransition(R.anim.slide_still, R.anim.slide_out_right); 54 | } 55 | 56 | return super.onOptionsItemSelected(item); 57 | } 58 | 59 | private RecyclerView getPageView(int pos) { 60 | RecyclerView view = mPageMap.get(pos); 61 | if (view == null) { 62 | RecyclerView recyclerView = new RecyclerView(this); 63 | recyclerView.setLayoutManager(new LinearLayoutManager(this)); 64 | recyclerView.setAdapter(new MyRecyclerAdapter()); 65 | mPageMap.put(pos, recyclerView); 66 | return recyclerView; 67 | } 68 | return view; 69 | } 70 | 71 | private PagerAdapter mPagerAdapter = new PagerAdapter() { 72 | @Override 73 | public boolean isViewFromObject(View view, Object object) { 74 | return view == object; 75 | } 76 | 77 | @Override 78 | public int getCount() { 79 | return 3; 80 | } 81 | 82 | @Override 83 | public Object instantiateItem(final ViewGroup container, int position) { 84 | View view = getPageView(position); 85 | ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); 86 | container.addView(view, params); 87 | return view; 88 | } 89 | 90 | @Override 91 | public void destroyItem(ViewGroup container, int position, Object object) { 92 | container.removeView((View) object); 93 | } 94 | 95 | @Override 96 | public CharSequence getPageTitle(int position) { 97 | return "item " + (position + 1); 98 | } 99 | }; 100 | 101 | } 102 | -------------------------------------------------------------------------------- /app/src/main/java/org/cgspine/nestscroll/two/NestingScrollPlanLayout.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll.two; 2 | 3 | import android.content.Context; 4 | import android.content.res.TypedArray; 5 | import android.support.v4.view.NestedScrollingParent; 6 | import android.support.v4.view.NestedScrollingParentHelper; 7 | import android.support.v4.view.ViewCompat; 8 | import android.util.AttributeSet; 9 | import android.util.Log; 10 | import android.view.View; 11 | import android.view.ViewGroup; 12 | import android.widget.Scroller; 13 | 14 | import org.cgspine.nestscroll.R; 15 | import org.cgspine.nestscroll.Util; 16 | 17 | /** 18 | * @author cginechen 19 | * @date 2016-12-28 20 | */ 21 | 22 | public class NestingScrollPlanLayout extends ViewGroup implements NestedScrollingParent { 23 | private static final String TAG = "NestingScrollPlanLayout"; 24 | 25 | private int mHeaderViewId = 0; 26 | private int mTargetViewId = 0; 27 | private View mHeaderView; 28 | private View mTargetView; 29 | 30 | private int mHeaderInitOffset; 31 | private int mHeaderCurrentOffset; 32 | private int mHeaderEndOffset = 0; 33 | 34 | private int mTargetInitOffset; 35 | private int mTargetCurrentOffset; 36 | private int mTargetEndOffset = 0; 37 | 38 | private final NestedScrollingParentHelper mNestedScrollingParentHelper; 39 | private Scroller mScroller; 40 | private boolean mNeedScrollToInitPos = false; 41 | private boolean mNeedScrollToEndPos = false; 42 | private boolean mHasFling = false; 43 | 44 | public NestingScrollPlanLayout(Context context) { 45 | this(context, null); 46 | } 47 | 48 | public NestingScrollPlanLayout(Context context, AttributeSet attrs) { 49 | super(context, attrs); 50 | TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.NestingScrollPlanLayout, 0, 0); 51 | mHeaderViewId = array.getResourceId(R.styleable.NestingScrollPlanLayout_header_view, 0); 52 | mTargetViewId = array.getResourceId(R.styleable.NestingScrollPlanLayout_target_view, 0); 53 | 54 | mHeaderInitOffset = array.getDimensionPixelSize(R.styleable. 55 | EventDispatchPlanLayout_header_init_offset, Util.dp2px(getContext(), 20)); 56 | mTargetInitOffset = array.getDimensionPixelSize(R.styleable. 57 | EventDispatchPlanLayout_target_init_offset, Util.dp2px(getContext(), 40)); 58 | mHeaderCurrentOffset = mHeaderInitOffset; 59 | mTargetCurrentOffset = mTargetInitOffset; 60 | array.recycle(); 61 | 62 | ViewCompat.setChildrenDrawingOrderEnabled(this, true); 63 | mNestedScrollingParentHelper = new NestedScrollingParentHelper(this); 64 | 65 | mScroller = new Scroller(getContext()); 66 | mScroller.setFriction(0.98f); 67 | } 68 | 69 | @Override 70 | protected void onFinishInflate() { 71 | super.onFinishInflate(); 72 | if (mHeaderViewId != 0) { 73 | mHeaderView = findViewById(mHeaderViewId); 74 | } 75 | if (mTargetViewId != 0) { 76 | mTargetView = findViewById(mTargetViewId); 77 | } 78 | } 79 | 80 | private void ensureHeaderViewAndScrollView() { 81 | if (mHeaderView != null && mTargetView != null) { 82 | return; 83 | } 84 | if (mHeaderView == null && mTargetView == null && getChildCount() >= 2) { 85 | mHeaderView = getChildAt(0); 86 | mTargetView = getChildAt(1); 87 | return; 88 | } 89 | throw new RuntimeException("please ensure headerView and scrollView"); 90 | } 91 | 92 | @Override 93 | protected int getChildDrawingOrder(int childCount, int i) { 94 | ensureHeaderViewAndScrollView(); 95 | int headerIndex = indexOfChild(mHeaderView); 96 | int scrollIndex = indexOfChild(mTargetView); 97 | if (headerIndex < scrollIndex) { 98 | return i; 99 | } 100 | if (headerIndex == i) { 101 | return scrollIndex; 102 | } else if (scrollIndex == i) { 103 | return headerIndex; 104 | } 105 | return i; 106 | } 107 | 108 | @Override 109 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 110 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); 111 | ensureHeaderViewAndScrollView(); 112 | int scrollMeasureWidthSpec = MeasureSpec.makeMeasureSpec( 113 | getMeasuredWidth() - getPaddingLeft() - getPaddingRight(), MeasureSpec.EXACTLY); 114 | int scrollMeasureHeightSpec = MeasureSpec.makeMeasureSpec( 115 | getMeasuredHeight() - getPaddingTop() - getPaddingBottom(), MeasureSpec.EXACTLY); 116 | mTargetView.measure(scrollMeasureWidthSpec, scrollMeasureHeightSpec); 117 | measureChild(mHeaderView, widthMeasureSpec, heightMeasureSpec); 118 | } 119 | 120 | @Override 121 | protected void onLayout(boolean changed, int l, int t, int r, int b) { 122 | final int width = getMeasuredWidth(); 123 | final int height = getMeasuredHeight(); 124 | if (getChildCount() == 0) { 125 | return; 126 | } 127 | ensureHeaderViewAndScrollView(); 128 | 129 | final int childLeft = getPaddingLeft(); 130 | final int childTop = getPaddingTop(); 131 | final int childWidth = width - getPaddingLeft() - getPaddingRight(); 132 | final int childHeight = height - getPaddingTop() - getPaddingBottom(); 133 | mTargetView.layout(childLeft, childTop + mTargetCurrentOffset, 134 | childLeft + childWidth, childTop + childHeight + mTargetCurrentOffset); 135 | int headerViewWidth = mHeaderView.getMeasuredWidth(); 136 | int headerViewHeight = mHeaderView.getMeasuredHeight(); 137 | mHeaderView.layout((width / 2 - headerViewWidth / 2), mHeaderCurrentOffset, 138 | (width / 2 + headerViewWidth / 2), mHeaderCurrentOffset + headerViewHeight); 139 | } 140 | 141 | @Override 142 | public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) { 143 | Log.i(TAG, "onStartNestedScroll: nestedScrollAxes = " + nestedScrollAxes); 144 | return isEnabled() && (nestedScrollAxes & ViewCompat.SCROLL_AXIS_VERTICAL) != 0; 145 | } 146 | 147 | @Override 148 | public void onNestedScrollAccepted(View child, View target, int axes) { 149 | Log.i(TAG, "onNestedScrollAccepted: axes = " + axes); 150 | mNestedScrollingParentHelper.onNestedScrollAccepted(child, target, axes); 151 | } 152 | 153 | @Override 154 | public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) { 155 | Log.i(TAG, "onNestedPreScroll: dx = " + dx + " ; dy = " + dy); 156 | if (canViewScrollUp(target)) { 157 | return; 158 | } 159 | if (dy > 0) { 160 | // 往上滑 161 | int parentCanConsume = mTargetCurrentOffset - mTargetEndOffset; 162 | if (parentCanConsume > 0) { 163 | if (dy > parentCanConsume) { 164 | consumed[1] = parentCanConsume; 165 | moveTargetViewTo(mTargetEndOffset); 166 | } else { 167 | consumed[1] = dy; 168 | moveTargetView(-dy); 169 | } 170 | } 171 | } 172 | } 173 | 174 | @Override 175 | public void onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) { 176 | Log.i(TAG, "onNestedScroll: dxConsumed = " + dxConsumed + " ; dyConsumed = " + dyConsumed + 177 | " ; dxUnconsumed = " + dxUnconsumed + " ; dyUnconsumed = " + dyUnconsumed); 178 | if (dyUnconsumed < 0 && !(canViewScrollUp(target))) { 179 | int dy = -dyUnconsumed; 180 | moveTargetView(dy); 181 | } 182 | } 183 | 184 | @Override 185 | public int getNestedScrollAxes() { 186 | return mNestedScrollingParentHelper.getNestedScrollAxes(); 187 | } 188 | 189 | @Override 190 | public void onStopNestedScroll(View child) { 191 | Log.i(TAG, "onStopNestedScroll"); 192 | mNestedScrollingParentHelper.onStopNestedScroll(child); 193 | if (mHasFling) { 194 | mHasFling = false; 195 | } else { 196 | if (mTargetCurrentOffset <= (mTargetEndOffset + mTargetInitOffset) / 2) { 197 | mNeedScrollToEndPos = true; 198 | } else { 199 | mNeedScrollToInitPos = true; 200 | } 201 | invalidate(); 202 | } 203 | } 204 | 205 | @Override 206 | public boolean onNestedPreFling(View target, float velocityX, float velocityY) { 207 | super.onNestedPreFling(target, velocityX, velocityY); 208 | Log.i(TAG, "onNestedPreFling: mTargetCurrentOffset = " + mTargetCurrentOffset + 209 | " ; velocityX = " + velocityX + " ; velocityY = " + velocityY); 210 | mHasFling = true; 211 | int vy = (int) -velocityY; 212 | if (velocityY < 0) { 213 | // 向下 214 | if (canViewScrollUp(target)) { 215 | return false; 216 | } 217 | mNeedScrollToInitPos = true; 218 | mScroller.fling(0, mTargetCurrentOffset, 0, vy, 219 | 0, 0, mTargetEndOffset, Integer.MAX_VALUE); 220 | invalidate(); 221 | return true; 222 | } else { 223 | // 向上 224 | if (mTargetCurrentOffset <= mTargetEndOffset) { 225 | return false; 226 | } 227 | mNeedScrollToEndPos = true; 228 | mScroller.fling(0, mTargetCurrentOffset, 0, vy, 229 | 0, 0, mTargetEndOffset, Integer.MAX_VALUE); 230 | invalidate(); 231 | } 232 | return false; 233 | } 234 | 235 | 236 | private boolean canViewScrollUp(View view) { 237 | return ViewCompat.canScrollVertically(view, -1); 238 | } 239 | 240 | 241 | private void moveTargetView(float dy) { 242 | int target = mTargetCurrentOffset + (int) (dy); 243 | moveTargetViewTo(target); 244 | } 245 | 246 | private void moveTargetViewTo(int target) { 247 | target = Math.max(target, mTargetEndOffset); 248 | ViewCompat.offsetTopAndBottom(mTargetView, target - mTargetCurrentOffset); 249 | mTargetCurrentOffset = target; 250 | 251 | int headerTarget; 252 | if (mTargetCurrentOffset >= mTargetInitOffset) { 253 | headerTarget = mHeaderInitOffset; 254 | } else if (mTargetCurrentOffset <= mTargetEndOffset) { 255 | headerTarget = mHeaderEndOffset; 256 | } else { 257 | float percent = (mTargetCurrentOffset - mTargetEndOffset) * 1.0f / (mTargetInitOffset - mTargetEndOffset); 258 | headerTarget = (int) (mHeaderEndOffset + percent * (mHeaderInitOffset - mHeaderEndOffset)); 259 | } 260 | ViewCompat.offsetTopAndBottom(mHeaderView, headerTarget - mHeaderCurrentOffset); 261 | mHeaderCurrentOffset = headerTarget; 262 | } 263 | 264 | @Override 265 | public void computeScroll() { 266 | if (mScroller.computeScrollOffset()) { 267 | int offsetY = mScroller.getCurrY(); 268 | moveTargetViewTo(offsetY); 269 | invalidate(); 270 | } else if (mNeedScrollToInitPos) { 271 | mNeedScrollToInitPos = false; 272 | if (mTargetCurrentOffset == mTargetInitOffset) { 273 | return; 274 | } 275 | mScroller.startScroll(0, mTargetCurrentOffset, 0, mTargetInitOffset - mTargetCurrentOffset); 276 | invalidate(); 277 | } else if (mNeedScrollToEndPos) { 278 | mNeedScrollToEndPos = false; 279 | if (mTargetCurrentOffset == mTargetEndOffset) { 280 | return; 281 | } 282 | mScroller.startScroll(0, mTargetCurrentOffset, 0, mTargetEndOffset - mTargetCurrentOffset); 283 | invalidate(); 284 | } 285 | } 286 | } 287 | -------------------------------------------------------------------------------- /app/src/main/res/anim/decelerate_factor_interpolator.xml: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /app/src/main/res/anim/slide_in_right.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 9 | 10 | -------------------------------------------------------------------------------- /app/src/main/res/anim/slide_out_right.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 9 | 10 | -------------------------------------------------------------------------------- /app/src/main/res/anim/slide_still.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 9 | 10 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/list_item_bg_with_border_bottom.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/list_item_bg_with_border_top_bottom.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 9 | 10 | 17 | 18 | 24 | 25 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_plan_coordinator.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 15 | 20 | 25 | 31 | 37 | 42 | 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_plan_event_dispatch.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 15 | 24 | 29 | 35 | 41 | 46 | 47 | 48 | 49 | 50 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_plan_nesting_scroll.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 15 | 24 | 29 | 35 | 41 | 46 | 47 | 48 | 49 | 50 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/cgspine/NestingScrollDemo/15bba261e6d9580e060b5b537a016145ef0257b3/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/cgspine/NestingScrollDemo/15bba261e6d9580e060b5b537a016145ef0257b3/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/cgspine/NestingScrollDemo/15bba261e6d9580e060b5b537a016145ef0257b3/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/cgspine/NestingScrollDemo/15bba261e6d9580e060b5b537a016145ef0257b3/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/cgspine/NestingScrollDemo/15bba261e6d9580e060b5b537a016145ef0257b3/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /app/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/attr.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | #ffffffff 8 | #ffcccccc 9 | 10 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 16dp 4 | 16dp 5 | 6 | 44dp 7 | 8 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | NestScroll 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/test/java/org/cgspine/nestscroll/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package org.cgspine.nestscroll; 2 | 3 | import org.junit.Test; 4 | 5 | import static org.junit.Assert.*; 6 | 7 | /** 8 | * Example local unit test, which will execute on the development machine (host). 9 | * 10 | * @see Testing documentation 11 | */ 12 | public class ExampleUnitTest { 13 | @Test 14 | public void addition_isCorrect() throws Exception { 15 | assertEquals(4, 2 + 2); 16 | } 17 | } -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | // Top-level build file where you can add configuration options common to all sub-projects/modules. 2 | 3 | buildscript { 4 | repositories { 5 | jcenter() 6 | } 7 | dependencies { 8 | classpath 'com.android.tools.build:gradle:2.2.2' 9 | 10 | // NOTE: Do not place your application dependencies here; they belong 11 | // in the individual module build.gradle files 12 | } 13 | } 14 | 15 | allprojects { 16 | repositories { 17 | jcenter() 18 | } 19 | } 20 | 21 | task clean(type: Delete) { 22 | delete rootProject.buildDir 23 | } 24 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Gradle settings configured through the IDE *will override* 5 | # any settings specified in this file. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | org.gradle.jvmargs=-Xmx1536m 13 | 14 | # When configured, Gradle will run in incubating parallel mode. 15 | # This option should only be used with decoupled projects. More details, visit 16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 17 | # org.gradle.parallel=true 18 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/cgspine/NestingScrollDemo/15bba261e6d9580e060b5b537a016145ef0257b3/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Mon Dec 28 10:00:20 PST 2015 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # Attempt to set APP_HOME 46 | # Resolve links: $0 may be a link 47 | PRG="$0" 48 | # Need this for relative symlinks. 49 | while [ -h "$PRG" ] ; do 50 | ls=`ls -ld "$PRG"` 51 | link=`expr "$ls" : '.*-> \(.*\)$'` 52 | if expr "$link" : '/.*' > /dev/null; then 53 | PRG="$link" 54 | else 55 | PRG=`dirname "$PRG"`"/$link" 56 | fi 57 | done 58 | SAVED="`pwd`" 59 | cd "`dirname \"$PRG\"`/" >/dev/null 60 | APP_HOME="`pwd -P`" 61 | cd "$SAVED" >/dev/null 62 | 63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 64 | 65 | # Determine the Java command to use to start the JVM. 66 | if [ -n "$JAVA_HOME" ] ; then 67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 68 | # IBM's JDK on AIX uses strange locations for the executables 69 | JAVACMD="$JAVA_HOME/jre/sh/java" 70 | else 71 | JAVACMD="$JAVA_HOME/bin/java" 72 | fi 73 | if [ ! -x "$JAVACMD" ] ; then 74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 75 | 76 | Please set the JAVA_HOME variable in your environment to match the 77 | location of your Java installation." 78 | fi 79 | else 80 | JAVACMD="java" 81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 82 | 83 | Please set the JAVA_HOME variable in your environment to match the 84 | location of your Java installation." 85 | fi 86 | 87 | # Increase the maximum file descriptors if we can. 88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 89 | MAX_FD_LIMIT=`ulimit -H -n` 90 | if [ $? -eq 0 ] ; then 91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 92 | MAX_FD="$MAX_FD_LIMIT" 93 | fi 94 | ulimit -n $MAX_FD 95 | if [ $? -ne 0 ] ; then 96 | warn "Could not set maximum file descriptor limit: $MAX_FD" 97 | fi 98 | else 99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 100 | fi 101 | fi 102 | 103 | # For Darwin, add options to specify how the application appears in the dock 104 | if $darwin; then 105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 106 | fi 107 | 108 | # For Cygwin, switch paths to Windows format before running java 109 | if $cygwin ; then 110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 112 | JAVACMD=`cygpath --unix "$JAVACMD"` 113 | 114 | # We build the pattern for arguments to be converted via cygpath 115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 116 | SEP="" 117 | for dir in $ROOTDIRSRAW ; do 118 | ROOTDIRS="$ROOTDIRS$SEP$dir" 119 | SEP="|" 120 | done 121 | OURCYGPATTERN="(^($ROOTDIRS))" 122 | # Add a user-defined pattern to the cygpath arguments 123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 125 | fi 126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 127 | i=0 128 | for arg in "$@" ; do 129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 131 | 132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 134 | else 135 | eval `echo args$i`="\"$arg\"" 136 | fi 137 | i=$((i+1)) 138 | done 139 | case $i in 140 | (0) set -- ;; 141 | (1) set -- "$args0" ;; 142 | (2) set -- "$args0" "$args1" ;; 143 | (3) set -- "$args0" "$args1" "$args2" ;; 144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 150 | esac 151 | fi 152 | 153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 154 | function splitJvmOpts() { 155 | JVM_OPTS=("$@") 156 | } 157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 159 | 160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 161 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | --------------------------------------------------------------------------------