├── .gitignore ├── .idea ├── codeStyles │ └── Project.xml ├── gradle.xml ├── misc.xml └── runConfigurations.xml ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── lis │ │ └── nestscrollviewandrecyclerview │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── lis │ │ │ └── nestscrollviewandrecyclerview │ │ │ ├── MainActivity.java │ │ │ ├── utils │ │ │ └── FlingHelper.java │ │ │ └── view │ │ │ ├── BaseViewHolder.java │ │ │ ├── FixedDisabledScrollRecyclerView.java │ │ │ ├── NestedScrollLayout.java │ │ │ ├── RecyclerAdapter.java │ │ │ ├── fragment │ │ │ └── RecyclerViewFragment.java │ │ │ └── viewpager │ │ │ └── ViewPagerAdapter.java │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ ├── activity_main.xml │ │ └── fragment_recycler_view.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.xml │ │ ├── mipmap-hdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ └── values │ │ ├── colors.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── lis │ └── nestscrollviewandrecyclerview │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── img └── nestedscrollview.gif └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 7 | 8 | 9 |
10 | 11 | 12 | 13 | xmlns:android 14 | 15 | ^$ 16 | 17 | 18 | 19 |
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33 | 34 | 35 | 36 | .*:id 37 | 38 | http://schemas.android.com/apk/res/android 39 | 40 | 41 | 42 |
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44 | 45 | 46 | 47 | .*:name 48 | 49 | http://schemas.android.com/apk/res/android 50 | 51 | 52 | 53 |
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101 | 102 | 103 | 104 | .* 105 | 106 | .* 107 | 108 | 109 | BY_NAME 110 | 111 |
112 | 113 | 114 | 115 | 116 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 19 | 20 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | 10 | 11 | 12 | 13 | 14 | 19 | 20 | 21 | 22 | 23 | 24 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # NestedScrollView 2 | NestedScrollView嵌套RecyclerView+Tablayout，实现滑动Tablayout吸顶效果 3 | 4 | 1，滑动底部RecyclerView，先滑动ScrollView的滑动，悬浮吸顶后再进行RecyclerView的滑动。 5 | 2，快速滑动ScrollView至吸顶时，底部RecyclerView进行惯性滑动。 6 | ![Image text](https://github.com/xunyixiangchao/NestedScrollView/blob/master/img/nestedscrollview.gif) 7 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 29 5 | buildToolsVersion "29.0.3" 6 | 7 | defaultConfig { 8 | applicationId "com.lis.nestscrollviewandrecyclerview" 9 | minSdkVersion 21 10 | targetSdkVersion 29 11 | versionCode 1 12 | versionName "1.0" 13 | 14 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 15 | } 16 | 17 | buildTypes { 18 | release { 19 | minifyEnabled false 20 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 21 | } 22 | } 23 | 24 | } 25 | 26 | dependencies { 27 | implementation fileTree(dir: 'libs', include: ['*.jar']) 28 | 29 | implementation 'androidx.appcompat:appcompat:1.1.0' 30 | implementation 'androidx.constraintlayout:constraintlayout:1.1.3' 31 | testImplementation 'junit:junit:4.12' 32 | androidTestImplementation 'androidx.test.ext:junit:1.1.1' 33 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0' 34 | implementation "androidx.viewpager2:viewpager2:1.0.0" 35 | implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha04' 36 | implementation 'com.google.android.material:material:1.1.0-beta02' 37 | } 38 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/lis/nestscrollviewandrecyclerview/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview; 2 | 3 | import android.content.Context; 4 | 5 | import androidx.test.platform.app.InstrumentationRegistry; 6 | import androidx.test.ext.junit.runners.AndroidJUnit4; 7 | 8 | import org.junit.Test; 9 | import org.junit.runner.RunWith; 10 | 11 | import static org.junit.Assert.*; 12 | 13 | /** 14 | * Instrumented test, which will execute on an Android device. 15 | * 16 | * @see Testing documentation 17 | */ 18 | @RunWith(AndroidJUnit4.class) 19 | public class ExampleInstrumentedTest { 20 | @Test 21 | public void useAppContext() { 22 | // Context of the app under test. 23 | Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext(); 24 | 25 | assertEquals("com.lis.nestscrollviewandrecyclerview", appContext.getPackageName()); 26 | } 27 | } 28 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /app/src/main/java/com/lis/nestscrollviewandrecyclerview/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview; 2 | 3 | import androidx.annotation.NonNull; 4 | import androidx.appcompat.app.AppCompatActivity; 5 | import androidx.fragment.app.Fragment; 6 | import androidx.viewpager2.widget.ViewPager2; 7 | 8 | import android.os.Bundle; 9 | 10 | import com.google.android.material.tabs.TabLayout; 11 | import com.google.android.material.tabs.TabLayoutMediator; 12 | import com.lis.nestscrollviewandrecyclerview.view.fragment.RecyclerViewFragment; 13 | import com.lis.nestscrollviewandrecyclerview.view.viewpager.ViewPagerAdapter; 14 | 15 | import java.util.ArrayList; 16 | import java.util.List; 17 | 18 | public class MainActivity extends AppCompatActivity { 19 | 20 | ViewPager2 mViewPager2; 21 | com.google.android.material.tabs.TabLayout mTableLayout; 22 | 23 | @Override 24 | protected void onCreate(Bundle savedInstanceState) { 25 | super.onCreate(savedInstanceState); 26 | setContentView(R.layout.activity_main); 27 | mViewPager2 = findViewById(R.id.viewpager_view); 28 | mTableLayout = findViewById(R.id.tablayout); 29 | //设置Viewpager 30 | ViewPagerAdapter pagerAdapter = new ViewPagerAdapter(this, getPageFragments()); 31 | mViewPager2.setAdapter(pagerAdapter); 32 | 33 | // 34 | final String[] labels = new String[]{"linear", "scroll", "recycler"}; 35 | new TabLayoutMediator(mTableLayout, mViewPager2, new TabLayoutMediator.TabConfigurationStrategy() { 36 | @Override 37 | public void onConfigureTab(@NonNull TabLayout.Tab tab, int position) { 38 | tab.setText(labels[position]); 39 | } 40 | }).attach(); // 不要忘记，否则没效果 41 | } 42 | 43 | 44 | private List getPageFragments() { 45 | List data = new ArrayList<>(); 46 | data.add(new RecyclerViewFragment()); 47 | data.add(new RecyclerViewFragment()); 48 | data.add(new RecyclerViewFragment()); 49 | return data; 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /app/src/main/java/com/lis/nestscrollviewandrecyclerview/utils/FlingHelper.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview.utils; 2 | 3 | import android.content.Context; 4 | import android.view.ViewConfiguration; 5 | 6 | /** 7 | * 惯性滑动处理速度与距离的工具类 8 | */ 9 | public class FlingHelper { 10 | private static float DECELERATION_RATE = ((float) (Math.log(0.78d) / Math.log(0.9d))); 11 | private static float mFlingFriction = ViewConfiguration.getScrollFriction(); 12 | private static float mPhysicalCoeff; 13 | 14 | public FlingHelper(Context context) { 15 | mPhysicalCoeff = context.getResources().getDisplayMetrics().density * 160.0f * 386.0878f * 0.84f; 16 | } 17 | 18 | private double getSplineDeceleration(int i) { 19 | return Math.log((double) ((0.35f * ((float) Math.abs(i))) / (mFlingFriction * mPhysicalCoeff))); 20 | } 21 | 22 | private double getSplineDecelerationByDistance(double d) { 23 | return ((((double) DECELERATION_RATE) - 1.0d) * Math.log(d / ((double) (mFlingFriction * mPhysicalCoeff)))) / ((double) DECELERATION_RATE); 24 | } 25 | 26 | /** 27 | * 根据速度求滑动距离 28 | * 29 | * @param i 30 | * @return 31 | */ 32 | public double getSplineFlingDistance(int i) { 33 | return Math.exp(getSplineDeceleration(i) * (((double) DECELERATION_RATE) / (((double) DECELERATION_RATE) - 1.0d))) * ((double) (mFlingFriction * mPhysicalCoeff)); 34 | } 35 | 36 | /** 37 | * 根据滑动距离求速度 38 | * 39 | * @param d 40 | * @return 41 | */ 42 | public int getVelocityByDistance(double d) { 43 | return Math.abs((int) (((Math.exp(getSplineDecelerationByDistance(d)) * ((double) mFlingFriction)) * ((double) mPhysicalCoeff)) / 0.3499999940395355d)); 44 | } 45 | } 46 | -------------------------------------------------------------------------------- /app/src/main/java/com/lis/nestscrollviewandrecyclerview/view/BaseViewHolder.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview.view; 2 | 3 | import android.view.View; 4 | import android.widget.TextView; 5 | 6 | import androidx.annotation.NonNull; 7 | import androidx.recyclerview.widget.RecyclerView; 8 | 9 | public class BaseViewHolder extends RecyclerView.ViewHolder { 10 | private TextView view; 11 | 12 | public BaseViewHolder(View view) { 13 | super((View) view); 14 | this.view = (TextView) view; 15 | } 16 | 17 | public void bind(@NonNull String item) { 18 | view.setText(item); 19 | } 20 | } -------------------------------------------------------------------------------- /app/src/main/java/com/lis/nestscrollviewandrecyclerview/view/FixedDisabledScrollRecyclerView.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview.view; 2 | 3 | import android.content.Context; 4 | import android.util.AttributeSet; 5 | import android.view.MotionEvent; 6 | 7 | import androidx.annotation.NonNull; 8 | import androidx.annotation.Nullable; 9 | import androidx.recyclerview.widget.LinearLayoutManager; 10 | import androidx.recyclerview.widget.RecyclerView; 11 | 12 | import java.util.ArrayList; 13 | import java.util.List; 14 | 15 | public class FixedDisabledScrollRecyclerView extends RecyclerView { 16 | public FixedDisabledScrollRecyclerView(@NonNull Context context) { 17 | super(context); 18 | init(); 19 | } 20 | 21 | 22 | public FixedDisabledScrollRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs) { 23 | super(context, attrs); 24 | init(); 25 | } 26 | 27 | public FixedDisabledScrollRecyclerView(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) { 28 | super(context, attrs, defStyleAttr); 29 | init(); 30 | } 31 | 32 | private void init() { 33 | setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false)); 34 | RecyclerAdapter adapter = new RecyclerAdapter(getBanner()); 35 | setAdapter(adapter); 36 | } 37 | 38 | @Override 39 | public boolean onTouchEvent(MotionEvent e) { 40 | return false; 41 | } 42 | 43 | @Override 44 | public boolean onInterceptTouchEvent(MotionEvent e) { 45 | return false; 46 | } 47 | 48 | private List getBanner() { 49 | List data = new ArrayList<>(); 50 | data.add("ParentView item 0"); 51 | data.add("ParentView item 1"); 52 | data.add("ParentView item 2"); 53 | data.add("ParentView item 3"); 54 | data.add("ParentView item 4"); 55 | data.add("ParentView item 5"); 56 | data.add("ParentView item 6"); 57 | data.add("ParentView item 7"); 58 | return data; 59 | } 60 | 61 | } 62 | -------------------------------------------------------------------------------- /app/src/main/java/com/lis/nestscrollviewandrecyclerview/view/NestedScrollLayout.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview.view; 2 | 3 | import android.content.Context; 4 | import android.os.Build; 5 | import android.util.AttributeSet; 6 | import android.view.View; 7 | import android.view.ViewGroup; 8 | 9 | import androidx.annotation.NonNull; 10 | import androidx.annotation.Nullable; 11 | import androidx.core.widget.NestedScrollView; 12 | import androidx.recyclerview.widget.RecyclerView; 13 | 14 | import com.lis.nestscrollviewandrecyclerview.utils.FlingHelper; 15 | 16 | public class NestedScrollLayout extends NestedScrollView { 17 | public NestedScrollLayout(@NonNull Context context) { 18 | super(context); 19 | init(); 20 | } 21 | 22 | public NestedScrollLayout(@NonNull Context context, @Nullable AttributeSet attrs) { 23 | super(context, attrs); 24 | init(); 25 | } 26 | 27 | public NestedScrollLayout(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) { 28 | super(context, attrs, defStyleAttr); 29 | init(); 30 | } 31 | 32 | FlingHelper mFlingHelper; 33 | int totalDy; 34 | 35 | private View topView; 36 | private ViewGroup contentView; 37 | 38 | boolean isStartFling = false; 39 | /** 40 | * 记录当前滑动的y轴加速度 41 | */ 42 | private int velocityY = 0; 43 | 44 | private void init() { 45 | mFlingHelper = new FlingHelper(getContext()); 46 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 47 | setOnScrollChangeListener(new OnScrollChangeListener() { 48 | @Override 49 | public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) { 50 | if (isStartFling) { 51 | totalDy = 0; 52 | isStartFling = false; 53 | } 54 | if (scrollY == 0) { 55 | //top scroll 可以在此进行刷新 56 | } 57 | if (scrollY == (getChildAt(0).getMeasuredHeight() - v.getMeasuredHeight())) { 58 | //开始底部的滑动 59 | dispatchChildFling(); 60 | } 61 | //在RecyclerView fling 情况下，记录当前RecyclerView在Y轴的偏移 62 | totalDy += scrollY - oldScrollY; 63 | } 64 | }); 65 | } 66 | } 67 | 68 | private void dispatchChildFling() { 69 | if (velocityY != 0) { 70 | double splineFlingDistance = mFlingHelper.getSplineFlingDistance(velocityY); 71 | //根据速度求的距离大于滑动的距离时 72 | if (splineFlingDistance > totalDy) { 73 | //求距离差的速度 74 | int velocity = mFlingHelper.getVelocityByDistance(splineFlingDistance - totalDy); 75 | //计算子View的惯性滑动 76 | childFling(velocity); 77 | } 78 | } 79 | totalDy = 0; 80 | velocityY = 0; 81 | 82 | } 83 | 84 | private void childFling(int velocity) { 85 | //获取底部的RecyclerView 86 | RecyclerView recyclerView = getChildRecyclerView(contentView); 87 | if (recyclerView != null) { 88 | recyclerView.fling(0, velocity); 89 | } 90 | } 91 | 92 | private RecyclerView getChildRecyclerView(ViewGroup viewGroup) { 93 | for (int i = 0; i < viewGroup.getChildCount(); i++) { 94 | View view = viewGroup.getChildAt(i); 95 | //这里一定要判断view.getClass()，因为viewpager2中有一个RecyclerViewImpl继承RecyclerView 96 | //不判断就会获取到这个对象，从而下方的RecyclerView不能惯性滑动 97 | if (view instanceof RecyclerView && view.getClass() == RecyclerView.class) { 98 | return (RecyclerView) view; 99 | } else if (view instanceof ViewGroup) { 100 | ViewGroup childRecyclerView = getChildRecyclerView((ViewGroup) view); 101 | if (childRecyclerView instanceof RecyclerView) { 102 | return (RecyclerView) childRecyclerView; 103 | } 104 | } 105 | continue; 106 | } 107 | return null; 108 | } 109 | 110 | 111 | //布局加载完后 112 | @Override 113 | protected void onFinishInflate() { 114 | super.onFinishInflate(); 115 | topView = ((ViewGroup) getChildAt(0)).getChildAt(0); 116 | contentView = (ViewGroup) ((ViewGroup) getChildAt(0)).getChildAt(1); 117 | 118 | } 119 | 120 | @Override 121 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 122 | // 调整contentView的高度为父容器高度，使之填充布局，避免父容器滚动后出现空白 123 | super.onMeasure(widthMeasureSpec, heightMeasureSpec); 124 | ViewGroup.LayoutParams layoutParams = contentView.getLayoutParams(); 125 | layoutParams.height = getMeasuredHeight(); 126 | //设置contentView的高度为全屏幕的高度，实现TabLayout顶部悬浮 127 | contentView.setLayoutParams(layoutParams); 128 | } 129 | 130 | @Override 131 | public void onNestedPreScroll(@NonNull View target, int dx, int dy, @NonNull int[] consumed, 132 | int type) { 133 | //scrollview顶部滑动 134 | //这里实现scrollview顶部没有隐藏时，滑动底部的RecyclerView时，scrollview滑动 135 | boolean onScroll = dy > 0 && getScrollY() < topView.getMeasuredHeight(); 136 | if (onScroll) { 137 | scrollBy(0, dy); 138 | consumed[1] = dy; 139 | } 140 | } 141 | 142 | 143 | @Override 144 | public void fling(int velocityY) { 145 | super.fling(velocityY); 146 | if (velocityY <= 0) { 147 | this.velocityY = 0; 148 | } else { 149 | this.velocityY = velocityY; 150 | isStartFling = true; 151 | } 152 | 153 | } 154 | 155 | } 156 | -------------------------------------------------------------------------------- /app/src/main/java/com/lis/nestscrollviewandrecyclerview/view/RecyclerAdapter.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview.view; 2 | 3 | import android.view.Gravity; 4 | import android.view.ViewGroup; 5 | import android.widget.TextView; 6 | 7 | import androidx.annotation.NonNull; 8 | import androidx.recyclerview.widget.RecyclerView; 9 | 10 | 11 | import com.lis.nestscrollviewandrecyclerview.R; 12 | 13 | import java.util.List; 14 | 15 | public class RecyclerAdapter extends RecyclerView.Adapter { 16 | public List data; 17 | 18 | public RecyclerAdapter(List data) { 19 | this.data = data; 20 | } 21 | 22 | @NonNull 23 | @Override 24 | public BaseViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { 25 | TextView textView = new TextView(parent.getContext()); 26 | ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); 27 | layoutParams.height = 300; 28 | textView.setGravity(Gravity.CENTER); 29 | textView.setLayoutParams(layoutParams); 30 | return new BaseViewHolder(textView); 31 | } 32 | 33 | @Override 34 | public void onBindViewHolder(@NonNull BaseViewHolder holder, int position) { 35 | holder.bind(data.get(position)); 36 | } 37 | 38 | @Override 39 | public int getItemCount() { 40 | return data.size(); 41 | } 42 | } 43 | 44 | -------------------------------------------------------------------------------- /app/src/main/java/com/lis/nestscrollviewandrecyclerview/view/fragment/RecyclerViewFragment.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview.view.fragment; 2 | 3 | import android.os.Bundle; 4 | import android.view.LayoutInflater; 5 | import android.view.View; 6 | import android.view.ViewGroup; 7 | 8 | import androidx.annotation.NonNull; 9 | import androidx.annotation.Nullable; 10 | import androidx.fragment.app.Fragment; 11 | import androidx.recyclerview.widget.LinearLayoutManager; 12 | import androidx.recyclerview.widget.RecyclerView; 13 | 14 | import com.lis.nestscrollviewandrecyclerview.R; 15 | import com.lis.nestscrollviewandrecyclerview.view.RecyclerAdapter; 16 | 17 | import java.util.ArrayList; 18 | import java.util.List; 19 | 20 | 21 | public class RecyclerViewFragment extends Fragment { 22 | 23 | private RecyclerView recyclerView; 24 | 25 | @Nullable 26 | @Override 27 | public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 28 | View view = inflater.inflate(R.layout.fragment_recycler_view, container, false); 29 | 30 | recyclerView = view.findViewById(R.id.recycler_view); 31 | recyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); 32 | final RecyclerAdapter adapter = new RecyclerAdapter(getData()); 33 | recyclerView.setAdapter(adapter); 34 | 35 | recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() { 36 | 37 | private static final int THRESHOLD_LOAD_MORE = 3; 38 | private boolean hasLoadMore; 39 | 40 | @Override 41 | public void onScrollStateChanged(@NonNull final RecyclerView recyclerView, int newState) { 42 | if (newState == RecyclerView.SCROLL_STATE_DRAGGING) { 43 | hasLoadMore = false; 44 | } 45 | 46 | if (newState != RecyclerView.SCROLL_STATE_DRAGGING && !hasLoadMore) { 47 | int lastPosition = ((LinearLayoutManager) recyclerView.getLayoutManager()).findLastVisibleItemPosition(); 48 | int offset = recyclerView.getAdapter().getItemCount() - lastPosition - 1; 49 | if (offset <= THRESHOLD_LOAD_MORE) { 50 | hasLoadMore = true; 51 | adapter.data.addAll(getData()); 52 | adapter.notifyDataSetChanged(); 53 | } 54 | } 55 | } 56 | }); 57 | return view; 58 | } 59 | 60 | private int i = 0; 61 | 62 | private List getData() { 63 | List data = new ArrayList<>(); 64 | for (int tempI = i; i < tempI + 10; i++) { 65 | data.add("ChildView item " + i); 66 | } 67 | return data; 68 | } 69 | } 70 | -------------------------------------------------------------------------------- /app/src/main/java/com/lis/nestscrollviewandrecyclerview/view/viewpager/ViewPagerAdapter.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview.view.viewpager; 2 | 3 | import androidx.annotation.NonNull; 4 | import androidx.fragment.app.Fragment; 5 | import androidx.fragment.app.FragmentActivity; 6 | import androidx.viewpager2.adapter.FragmentStateAdapter; 7 | 8 | import java.util.List; 9 | 10 | public class ViewPagerAdapter extends FragmentStateAdapter { 11 | 12 | private List data; 13 | 14 | public ViewPagerAdapter(@NonNull FragmentActivity fragmentActivity, List data) { 15 | super(fragmentActivity); 16 | this.data = data; 17 | } 18 | 19 | @NonNull 20 | @Override 21 | public Fragment createFragment(int position) { 22 | return data.get(position); 23 | } 24 | 25 | @Override 26 | public int getItemCount() { 27 | return data.size(); 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 18 | 21 | 22 | 23 | 24 | 30 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 9 | 10 | 14 | 15 | 19 | 20 | 24 | 25 | 30 | 31 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /app/src/main/res/layout/fragment_recycler_view.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | -------------------------------------------------------------------------------- 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/app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #6200EE 4 | #3700B3 5 | #03DAC5 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | NestScrollViewAndRecyclerView 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 12 | -------------------------------------------------------------------------------- /app/src/test/java/com/lis/nestscrollviewandrecyclerview/ExampleUnitTest.java: -------------------------------------------------------------------------------- 1 | package com.lis.nestscrollviewandrecyclerview; 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() { 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 | 5 | repositories { 6 | google() 7 | jcenter() 8 | 9 | } 10 | dependencies { 11 | classpath 'com.android.tools.build:gradle:3.6.3' 12 | 13 | 14 | // NOTE: Do not place your application dependencies here; they belong 15 | // in the individual module build.gradle files 16 | } 17 | } 18 | 19 | allprojects { 20 | repositories { 21 | google() 22 | jcenter() 23 | 24 | } 25 | } 26 | 27 | task clean(type: Delete) { 28 | delete rootProject.buildDir 29 | } 30 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx1536m 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. More details, visit 12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 13 | # org.gradle.parallel=true 14 | # AndroidX package structure to make it clearer which packages are bundled with the 15 | # Android operating system, and which are packaged with your app's APK 16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn 17 | android.useAndroidX=true 18 | # Automatically convert third-party libraries to use AndroidX 19 | android.enableJetifier=true 20 | 21 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xunyixiangchao/NestedScrollView/07b4f9145248ee4bc255fa95ff78a6213782a806/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Sat Jul 11 16:21:02 CST 2020 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-5.6.4-all.zip 7 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /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 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 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 Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /img/nestedscrollview.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xunyixiangchao/NestedScrollView/07b4f9145248ee4bc255fa95ff78a6213782a806/img/nestedscrollview.gif -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | rootProject.name='NestScrollViewAndRecyclerView' 2 | include ':app' 3 | --------------------------------------------------------------------------------