├── .gitignore ├── 1.gif ├── LICENSE ├── README.md └── layoutmanager ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src ├── androidTest └── java │ └── org │ └── loader │ └── layoutmanager │ └── ExampleInstrumentedTest.java ├── main ├── AndroidManifest.xml ├── java │ └── org │ │ └── loader │ │ └── layoutmanager │ │ ├── CardItemView.java │ │ ├── CardLayoutManager.java │ │ ├── MainActivity.java │ │ └── Pool.java └── res │ ├── drawable │ └── item.jpg │ ├── layout │ ├── activity_main.xml │ └── item.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 │ ├── attrs.xml │ ├── colors.xml │ ├── dimens.xml │ ├── strings.xml │ └── styles.xml └── test └── java └── org └── loader └── layoutmanager └── ExampleUnitTest.java /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # Files for the ART/Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | gen/ 14 | out/ 15 | 16 | # Gradle files 17 | .gradle/ 18 | build/ 19 | 20 | # Local configuration file (sdk path, etc) 21 | local.properties 22 | 23 | # Proguard folder generated by Eclipse 24 | proguard/ 25 | 26 | # Log Files 27 | *.log 28 | 29 | # Android Studio Navigation editor temp files 30 | .navigation/ 31 | 32 | # Android Studio captures folder 33 | captures/ 34 | 35 | # Intellij 36 | *.iml 37 | .idea/workspace.xml 38 | 39 | # Keystore files 40 | *.jks 41 | -------------------------------------------------------------------------------- /1.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/qibin0506/CardLayoutManager/bcf03a18b0ecb7f9a44164715ac977f590f2b7a5/1.gif -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright {yyyy} {name of copyright owner} 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # CardLayoutManager 2 | RecyclerView自定义LayoutManager 3 | 4 | ![](./1.gif) 5 | -------------------------------------------------------------------------------- /layoutmanager/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /layoutmanager/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 24 5 | buildToolsVersion "23.0.2" 6 | 7 | defaultConfig { 8 | applicationId "org.loader.layoutmanager" 9 | minSdkVersion 24 10 | targetSdkVersion 24 11 | versionCode 1 12 | versionName "1.0" 13 | 14 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 15 | 16 | } 17 | buildTypes { 18 | release { 19 | minifyEnabled false 20 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 21 | } 22 | } 23 | } 24 | 25 | dependencies { 26 | compile fileTree(include: ['*.jar'], dir: 'libs') 27 | androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', { 28 | exclude group: 'com.android.support', module: 'support-annotations' 29 | }) 30 | compile 'com.android.support:appcompat-v7:24.2.0' 31 | testCompile 'junit:junit:4.12' 32 | compile 'com.android.support:recyclerview-v7:24.2.0' 33 | } 34 | -------------------------------------------------------------------------------- /layoutmanager/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 /home/qibin/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 | -------------------------------------------------------------------------------- /layoutmanager/src/androidTest/java/org/loader/layoutmanager/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package org.loader.layoutmanager; 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.loader.layoutmanager", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /layoutmanager/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /layoutmanager/src/main/java/org/loader/layoutmanager/CardItemView.java: -------------------------------------------------------------------------------- 1 | package org.loader.layoutmanager; 2 | 3 | import android.content.Context; 4 | import android.content.res.TypedArray; 5 | import android.graphics.Canvas; 6 | import android.graphics.Color; 7 | import android.graphics.Paint; 8 | import android.graphics.Path; 9 | import android.graphics.RectF; 10 | import android.graphics.Region; 11 | import android.util.AttributeSet; 12 | import android.view.MotionEvent; 13 | import android.view.View; 14 | 15 | /** 16 | * Created by qibin on 16-9-26. 17 | */ 18 | 19 | public class CardItemView extends View { 20 | 21 | private int mSize; 22 | private Paint mPaint; 23 | private Path mDrawPath; 24 | private Region mRegion; 25 | 26 | public CardItemView(Context context) { 27 | this(context, null, 0); 28 | } 29 | 30 | public CardItemView(Context context, AttributeSet attrs) { 31 | this(context, attrs, 0); 32 | } 33 | 34 | public CardItemView(Context context, AttributeSet attrs, int defStyleAttr) { 35 | super(context, attrs, defStyleAttr); 36 | mPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 37 | mPaint.setStyle(Paint.Style.FILL); 38 | TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.Card, defStyleAttr, 0); 39 | mSize = ta.getDimensionPixelSize(R.styleable.Card_size, 10); 40 | mPaint.setColor(ta.getColor(R.styleable.Card_bgColor, 0)); 41 | ta.recycle(); 42 | 43 | mRegion = new Region(); 44 | mDrawPath = new Path(); 45 | 46 | mDrawPath.moveTo(0, mSize / 2); 47 | mDrawPath.lineTo(mSize / 2, 0); 48 | mDrawPath.lineTo(mSize, mSize / 2); 49 | mDrawPath.lineTo(mSize / 2, mSize); 50 | mDrawPath.close(); 51 | } 52 | 53 | @Override 54 | protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 55 | setMeasuredDimension(mSize, mSize); 56 | } 57 | 58 | @Override 59 | public boolean dispatchTouchEvent(MotionEvent event) { 60 | if (event.getAction() == MotionEvent.ACTION_DOWN) { 61 | if (!isEventInPath(event)) { return false;} 62 | } 63 | 64 | return super.dispatchTouchEvent(event); 65 | } 66 | 67 | private boolean isEventInPath(MotionEvent event) { 68 | RectF bounds = new RectF(); 69 | mDrawPath.computeBounds(bounds, true); 70 | mRegion.setPath(mDrawPath, new Region((int)bounds.left, 71 | (int)bounds.top, (int)bounds.right, (int)bounds.bottom)); 72 | return mRegion.contains((int) event.getX(), (int) event.getY()); 73 | } 74 | 75 | @Override 76 | protected void onDraw(Canvas canvas) { 77 | canvas.drawColor(Color.TRANSPARENT); 78 | canvas.drawPath(mDrawPath, mPaint); 79 | } 80 | 81 | public void setCardColor(int color) { 82 | mPaint.setColor(color); 83 | invalidate(); 84 | } 85 | } 86 | -------------------------------------------------------------------------------- /layoutmanager/src/main/java/org/loader/layoutmanager/CardLayoutManager.java: -------------------------------------------------------------------------------- 1 | package org.loader.layoutmanager; 2 | 3 | import android.graphics.Rect; 4 | import android.support.v7.widget.RecyclerView; 5 | import android.view.View; 6 | import android.view.ViewGroup; 7 | 8 | /** 9 | * Created by qibin on 16-9-25. 10 | */ 11 | 12 | public class CardLayoutManager extends RecyclerView.LayoutManager { 13 | public static final int DEFAULT_GROUP_SIZE = 5; 14 | 15 | private int mGroupSize; 16 | private int mHorizontalOffset; 17 | private int mVerticalOffset; 18 | private int mTotalWidth; 19 | private int mTotalHeight; 20 | private int mGravityOffset; 21 | private boolean isGravityCenter; 22 | 23 | private Pool mItemFrames; 24 | 25 | public CardLayoutManager(boolean center) { 26 | this(DEFAULT_GROUP_SIZE, center); 27 | } 28 | 29 | public CardLayoutManager(int groupSize, boolean center) { 30 | mGroupSize = groupSize; 31 | isGravityCenter = center; 32 | mItemFrames = new Pool<>(new Pool.New() { 33 | @Override 34 | public Rect get() { return new Rect();} 35 | }); 36 | } 37 | 38 | @Override 39 | public RecyclerView.LayoutParams generateDefaultLayoutParams() { 40 | return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, 41 | ViewGroup.LayoutParams.WRAP_CONTENT); 42 | } 43 | 44 | @Override 45 | public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) { 46 | if (getItemCount() <= 0 || state.isPreLayout()) { return;} 47 | 48 | detachAndScrapAttachedViews(recycler); 49 | View first = recycler.getViewForPosition(0); 50 | measureChildWithMargins(first, 0, 0); 51 | int itemWidth = getDecoratedMeasuredWidth(first); 52 | int itemHeight = getDecoratedMeasuredHeight(first); 53 | 54 | int firstLineSize = mGroupSize / 2 + 1; 55 | int secondLineSize = firstLineSize + mGroupSize / 2; 56 | if (isGravityCenter && firstLineSize * itemWidth < getHorizontalSpace()) { 57 | mGravityOffset = (getHorizontalSpace() - firstLineSize * itemWidth) / 2; 58 | } else { 59 | mGravityOffset = 0; 60 | } 61 | 62 | for (int i = 0; i < getItemCount(); i++) { 63 | Rect item = mItemFrames.get(i); 64 | float coefficient = isFirstGroup(i) ? 1.5f : 1.f; 65 | int offsetHeight = (int) ((i / mGroupSize) * itemHeight * coefficient); 66 | 67 | // 每一组的第一行 68 | if (isItemInFirstLine(i)) { 69 | int offsetInLine = i < firstLineSize ? i : i % mGroupSize; 70 | item.set(mGravityOffset + offsetInLine * itemWidth, offsetHeight, mGravityOffset + offsetInLine * itemWidth + itemWidth, 71 | itemHeight + offsetHeight); 72 | }else { 73 | int lineOffset = itemHeight / 2; 74 | int offsetInLine = (i < secondLineSize ? i : i % mGroupSize) - firstLineSize; 75 | item.set(mGravityOffset + offsetInLine * itemWidth + itemWidth / 2, 76 | offsetHeight + lineOffset, mGravityOffset + offsetInLine * itemWidth + itemWidth + itemWidth / 2, 77 | itemHeight + offsetHeight + lineOffset); 78 | } 79 | } 80 | 81 | mTotalWidth = Math.max(firstLineSize * itemWidth, getHorizontalSpace()); 82 | int totalHeight = getGroupSize() * itemHeight; 83 | if (!isItemInFirstLine(getItemCount() - 1)) { totalHeight += itemHeight / 2;} 84 | mTotalHeight = Math.max(totalHeight, getVerticalSpace()); 85 | fill(recycler, state); 86 | } 87 | 88 | private void fill(RecyclerView.Recycler recycler, RecyclerView.State state) { 89 | if (getItemCount() <= 0 || state.isPreLayout()) { return;} 90 | Rect displayRect = new Rect(mHorizontalOffset, mVerticalOffset, 91 | getHorizontalSpace() + mHorizontalOffset, 92 | getVerticalSpace() + mVerticalOffset); 93 | 94 | // Rect rect = new Rect(); 95 | // for (int i = 0; i < getChildCount(); i++) { 96 | // View item = getChildAt(i); 97 | // rect.left = getDecoratedLeft(item); 98 | // rect.top = getDecoratedTop(item); 99 | // rect.right = getDecoratedRight(item); 100 | // rect.bottom = getDecoratedBottom(item); 101 | // if (!Rect.intersects(displayRect, rect)) { 102 | // removeAndRecycleView(item, recycler); 103 | // } 104 | // } 105 | 106 | for (int i = 0; i < getItemCount(); i++) { 107 | Rect frame = mItemFrames.get(i); 108 | if (Rect.intersects(displayRect, frame)) { 109 | View scrap = recycler.getViewForPosition(i); 110 | addView(scrap); 111 | measureChildWithMargins(scrap, 0, 0); 112 | layoutDecorated(scrap, frame.left - mHorizontalOffset, frame.top - mVerticalOffset, 113 | frame.right - mHorizontalOffset, frame.bottom - mVerticalOffset); 114 | } 115 | } 116 | } 117 | 118 | @Override 119 | public int scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state) { 120 | detachAndScrapAttachedViews(recycler); 121 | if (mVerticalOffset + dy < 0) { 122 | dy = -mVerticalOffset; 123 | } else if (mVerticalOffset + dy > mTotalHeight - getVerticalSpace()) { 124 | dy = mTotalHeight - getVerticalSpace() - mVerticalOffset; 125 | } 126 | 127 | offsetChildrenVertical(-dy); 128 | fill(recycler, state); 129 | mVerticalOffset += dy; 130 | return dy; 131 | } 132 | 133 | @Override 134 | public int scrollHorizontallyBy(int dx, RecyclerView.Recycler recycler, RecyclerView.State state) { 135 | detachAndScrapAttachedViews(recycler); 136 | if (mHorizontalOffset + dx < 0) { 137 | dx = -mHorizontalOffset; 138 | } else if (mHorizontalOffset + dx > mTotalWidth - getHorizontalSpace()) { 139 | dx = mTotalWidth - getHorizontalSpace() - mHorizontalOffset; 140 | } 141 | 142 | offsetChildrenHorizontal(-dx); 143 | fill(recycler, state); 144 | mHorizontalOffset += dx; 145 | return dx; 146 | } 147 | 148 | @Override 149 | public boolean canScrollVertically() { 150 | return true; 151 | } 152 | 153 | @Override 154 | public boolean canScrollHorizontally() { 155 | return true; 156 | } 157 | 158 | private boolean isItemInFirstLine(int index) { 159 | int firstLineSize = mGroupSize / 2 + 1; 160 | return index < firstLineSize || (index >= mGroupSize && index % mGroupSize < firstLineSize); 161 | } 162 | 163 | private int getGroupSize() { 164 | return (int) Math.ceil(getItemCount() / (float)mGroupSize); 165 | } 166 | 167 | private boolean isFirstGroup(int index) { 168 | return index < mGroupSize; 169 | } 170 | 171 | private int getHorizontalSpace() { 172 | return getWidth() - getPaddingLeft() - getPaddingRight(); 173 | } 174 | 175 | private int getVerticalSpace() { 176 | return getHeight() - getPaddingTop() - getPaddingBottom(); 177 | } 178 | } 179 | -------------------------------------------------------------------------------- /layoutmanager/src/main/java/org/loader/layoutmanager/MainActivity.java: -------------------------------------------------------------------------------- 1 | package org.loader.layoutmanager; 2 | 3 | import android.support.v7.app.AppCompatActivity; 4 | import android.os.Bundle; 5 | import android.support.v7.widget.RecyclerView; 6 | import android.view.LayoutInflater; 7 | import android.view.View; 8 | import android.view.ViewGroup; 9 | import android.widget.TextView; 10 | import android.widget.Toast; 11 | 12 | import java.util.Random; 13 | 14 | public class MainActivity extends AppCompatActivity { 15 | 16 | private static final int[] COLORS = {0xff00FFFF, 0xffDEB887, 0xff5F9EA0, 17 | 0xff7FFF00, 0xff6495ED, 0xffDC143C, 18 | 0xff008B8B, 0xff006400, 0xff2F4F4F, 19 | 0xffFF69B4, 0xffFF00FF, 0xffCD5C5C, 20 | 0xff90EE90, 0xff87CEFA, 0xff800000}; 21 | 22 | private RecyclerView mRecyclerView; 23 | private Adapter mAdapter = new Adapter(); 24 | 25 | private int mCount = 50; 26 | private int mGroupSize = 3; 27 | 28 | @Override 29 | protected void onCreate(Bundle savedInstanceState) { 30 | super.onCreate(savedInstanceState); 31 | setContentView(R.layout.activity_main); 32 | mRecyclerView = (RecyclerView) findViewById(R.id.list); 33 | init(); 34 | } 35 | 36 | private void init() { 37 | mRecyclerView.setLayoutManager(new CardLayoutManager(mGroupSize, true)); 38 | mRecyclerView.setAdapter(mAdapter); 39 | } 40 | 41 | public void add(View view) { 42 | mCount += 10; 43 | mAdapter.notifyDataSetChanged(); 44 | } 45 | 46 | public void change(View view) { 47 | if (mGroupSize == 3) { mGroupSize = 9;} 48 | else { mGroupSize = 3;} 49 | init(); 50 | } 51 | 52 | class Adapter extends RecyclerView.Adapter { 53 | 54 | @Override 55 | public Holder onCreateViewHolder(ViewGroup parent, int viewType) { 56 | View item = LayoutInflater.from(parent.getContext()) 57 | .inflate(R.layout.item, parent, false); 58 | return new Holder(item); 59 | } 60 | 61 | @Override 62 | public void onBindViewHolder(final Holder holder, final int position) { 63 | // holder.item.setText("" + position); 64 | holder.item.setCardColor(randomColor()); 65 | holder.text.setText("菜单" + position); 66 | holder.item.setOnClickListener(new View.OnClickListener() { 67 | @Override 68 | public void onClick(View view) { 69 | Toast.makeText(MainActivity.this, holder.text.getText(), Toast.LENGTH_SHORT).show(); 70 | } 71 | }); 72 | } 73 | 74 | @Override 75 | public int getItemCount() { 76 | return mCount; 77 | } 78 | 79 | private int randomColor() { 80 | return COLORS[new Random().nextInt(COLORS.length)]; 81 | } 82 | 83 | class Holder extends RecyclerView.ViewHolder { 84 | CardItemView item; 85 | TextView text; 86 | public Holder(View itemView) { 87 | super(itemView); 88 | item = (CardItemView) itemView.findViewById(R.id.item); 89 | text = (TextView) itemView.findViewById(R.id.text); 90 | } 91 | } 92 | } 93 | } 94 | -------------------------------------------------------------------------------- /layoutmanager/src/main/java/org/loader/layoutmanager/Pool.java: -------------------------------------------------------------------------------- 1 | package org.loader.layoutmanager; 2 | 3 | import android.support.v4.util.SparseArrayCompat; 4 | 5 | /** 6 | * Created by qibin on 16-9-25. 7 | */ 8 | 9 | public class Pool { 10 | private SparseArrayCompat mPool; 11 | private New mNewInstance; 12 | 13 | public Pool(New newInstance) { 14 | mPool = new SparseArrayCompat<>(); 15 | mNewInstance = newInstance; 16 | } 17 | 18 | public T get(int key) { 19 | T res = mPool.get(key); 20 | if (res == null) { 21 | res = mNewInstance.get(); 22 | mPool.put(key, res); 23 | } 24 | return res; 25 | } 26 | 27 | public interface New { 28 | T get(); 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /layoutmanager/src/main/res/drawable/item.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/qibin0506/CardLayoutManager/bcf03a18b0ecb7f9a44164715ac977f590f2b7a5/layoutmanager/src/main/res/drawable/item.jpg -------------------------------------------------------------------------------- /layoutmanager/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 12 | 13 | 20 | 21 |