Android仿抖音上下滑动布局

抖音上下滑动，监听播放，自动吸顶，吸底效果，供大家参考，具体内容如下

使用RecyclerView+PagerSnapHelper实现

public class DouYinLayoutManager extends LinearLayoutManager implements RecyclerView.OnChildAttachStateChangeListener{
//判断是否上滑还是下滑
private int mDrift;
private OnViewPagerListener onViewPagerListener;
//吸顶，吸底
private PagerSnapHelper pagerSnapHelper;

public OnViewPagerListener getOnViewPagerListener() {
return onViewPagerListener;
}

public void setOnViewPagerListener(OnViewPagerListener onViewPagerListener) {
this.onViewPagerListener = onViewPagerListener;
}

public DouYinLayoutManager(Context context) {
super(context);
}

public DouYinLayoutManager(Context context, int orientation, boolean reverseLayout) {
super(context, orientation, reverseLayout);
pagerSnapHelper = new PagerSnapHelper();
}

/**
* 当manager完全添加到recycleview中是会被调用
* @param view
*/
@Override
public void onAttachedToWindow(RecyclerView view) {
view.addOnChildAttachStateChangeListener(this);
pagerSnapHelper.attachToRecyclerView(view);
super.onAttachedToWindow(view);
}

@Override
public boolean canScrollVertically() {
return super.canScrollVertically();
}

@Override
public int scrollVerticallyBy(int dy, RecyclerView.Recycler recycler, RecyclerView.State state) {
mDrift = dy;
return super.scrollVerticallyBy(dy, recycler, state);

}

@Override
public void onChildViewAttachedToWindow(@NonNull View view) {
if (mDrift > 0){
//向上滑
if (onViewPagerListener != null && Math.abs(mDrift) == view.getHeight()){
onViewPagerListener.onPageSelected(false,view);
}
}else {
//向下滑
if (onViewPagerListener != null && Math.abs(mDrift) == view.getHeight()){
onViewPagerListener.onPageSelected(true,view);
}
}
}

@Override
public void onChildViewDetachedFromWindow(@NonNull View view) {
if (mDrift >= 0){
//向上滑
if (onViewPagerListener != null){
onViewPagerListener.onPageRelease(true,view);
}
}else {
//向下滑
if (onViewPagerListener != null){
onViewPagerListener.onPageRelease(false,view);
}
}
}

@Override
public void onScrollStateChanged(int state) {
switch (state){
case RecyclerView.SCROLL_STATE_IDLE:
//当前显示的item
View snapView = pagerSnapHelper.findSnapView(this);
if (onViewPagerListener != null){
onViewPagerListener.onPageSelected(false,snapView);
}
break;
}
super.onScrollStateChanged(state);

}
}

recyclerView.setLayoutManager()即可

recyclerView = findViewById(R.id.recyclerView_dy);
douYinLayoutManager = new DouYinLayoutManager(this, OrientationHelper.VERTICAL,false);
recyclerView.setLayoutManager(douYinLayoutManager);
recyclerView.setAdapter(new MyAdapter());

douYinLayoutManager.setOnViewPagerListener(new OnViewPagerListener() {
@Override
public void onPageRelease(boolean isNest, View position) {
releaseVideo(position);
}

@Override
public void onPageSelected(boolean isButten, View position) {
playVideo(position);
}
});
}

代码：MyUiDemo

以上就是本文的全部内容，希望对大家的学习有所帮助

您可能感兴趣的文章:

• Android运用onTouchEvent自定义滑动布局
• Android开发中RecyclerView模仿探探左右滑动布局功能
• android实现上下左右滑动界面布局