This layout is used to support dispatch touch event. There has some example gif~
主要用来做 View 的无缝拖拽，详细效果看 gif～
| Author | Jarvis |
|---|---|
| yang4130qq@gmail.com |
 |  |
|---|---|
| normal | webview |
 |  |
| bottomsheet normal | bottomsheet appbarlayout |
 |  |
| webview recyclerview | imageview recyclerview |
 | |
| scene1 | scene2 |
<jarvis.com.library.NestedTouchScrollingLayout android:id="@+id/wrapper" android:layout_gravity="center" android:layout_width="match_parent" android:layout_height="wrap_content"> <android.support.v7.widget.RecyclerView android:id="@+id/container_rv" android:layout_width="match_parent" android:layout_height="400dp" android:background="#fff" android:overScrollMode="always"> </android.support.v7.widget.RecyclerView> </jarvis.com.library.NestedTouchScrollingLayout>// 设置手指下拉阻尼 mNestedTouchScrollingLayout.setDampingDown(2.0f / 5); // 设置手指上拉阻尼 mNestedTouchScrollingLayout.setDampingUp(3.0f / 5); mNestedTouchScrollingLayout.registerNestScrollChildCallback(new NestedTouchScrollingLayout.INestChildScrollChange() { // 当前 Layout 偏移距离 @Override public void onNestChildScrollChange(float deltaY, float velocityY) { } // finger 脱离屏幕 Layout 偏移量，以及当前 Layout 的速度 @Override public void onNestChildScrollRelease(final float deltaY, final int velocityY) { mNestedTouchScrollingLayout.recover(0, new Runnable() { @Override public void run() { Log.i("NestedTouchScrollingLayout ---> ", "deltaY : " + deltaY + " velocityY : " + velocityY); } }); } // 手指抬起时机 @Override public void onFingerUp(float velocityY) { } // 横向拖拽 @Override public void onNestChildHorizationScroll(MotionEvent event, float deltaX, float deltaY) { } // 当前 SheetView 运动状态 @Override public void onNestScrollingState(int state) { } }); <jarvis.com.library.NestedTouchScrollingLayout android:id="@+id/wrapper" android:layout_marginTop="30dp" android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.v7.widget.RecyclerView android:background="#fff" android:id="@+id/container_rv" android:layout_width="match_parent" android:layout_height="match_parent" /> </jarvis.com.library.NestedTouchScrollingLayout>// 临界速度，根据业务而定 public static int mVelocityYBound = 1300; // 规定 sheetView 弹起方向 mNestedTouchScrollingLayout.setSheetDirection(NestedTouchScrollingLayout.SheetDirection.BOTTOM); mNestedTouchScrollingLayout.registerNestScrollChildCallback(new NestedTouchScrollingLayout.INestChildScrollChange() { @Override public void onNestChildScrollChange(float deltaY, float velocityY) { } @Override public void onNestChildScrollRelease(float deltaY, int velocityY) { int totalYRange = mNestedTouchScrollingLayout.getMeasuredHeight(); int helfLimit = (totalYRange - DisplayUtils.dpToPixel(BottomSheetActivity.this, 400)) / 2; int hideLimit = totalYRange - DisplayUtils.dpToPixel(BottomSheetActivity.this, 400) / 2; int helfHeight = totalYRange - DisplayUtils.dpToPixel(BottomSheetActivity.this, 400); if (velocityY > mVelocityYBound && velocityY > 0) { if (Math.abs(deltaY) > helfHeight) { mNestedTouchScrollingLayout.hiden(); } else { mNestedTouchScrollingLayout.peek(mNestedTouchScrollingLayout.getMeasuredHeight() - DisplayUtils.dpToPixel(BottomSheetActivity.this,400)); } } else if (velocityY < -mVelocityYBound && velocityY < 0) { if (Math.abs(deltaY) < helfHeight) { mNestedTouchScrollingLayout.expand(); } else { mNestedTouchScrollingLayout.peek(mNestedTouchScrollingLayout.getMeasuredHeight() - DisplayUtils.dpToPixel(BottomSheetActivity.this,400)); } } else { if (Math.abs(deltaY) > hideLimit) { mNestedTouchScrollingLayout.hiden(); } else if (Math.abs(deltaY) > helfLimit) { mNestedTouchScrollingLayout.peek(mNestedTouchScrollingLayout.getMeasuredHeight() - DisplayUtils.dpToPixel(BottomSheetActivity.this, 400)); } else { mNestedTouchScrollingLayout.expand(); } } } @Override public void onFingerUp(float velocityY) { } @Override public void onNestChildHorizationScroll(MotionEvent event, float deltaX, float deltaY) { } });- hold all touch event, and dispath touch event to child view.
- fix ACTION_UP dispatch child click event.
- support bottomsheet.
- support CoordinatorLayout (AppbarLayout).
- add damping draging.
- add blur cover.
方式 1:
repositories { // ... maven { url "https://jitpack.io" } } dependencies { implementation 'com.github.JarvisGG:NestedTouchScrollingLayout:1.2.4' }方式 2:
repositories { // ... jcenter() } dependencies { implementation 'com.jarvis.library.NestedTouchScrollingLayout:library:1.2.4' }Tip
star star star ！！！！:blush:
This library is under the MIT license. check the LICENSE file for more detail.
Copyright (c) 2018 Jarvis