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
publicclassDouYinLayoutManagerextendsLinearLayoutManagerimplementsRecyclerView.OnChildAttachStateChangeListener{
//判断是否上滑还是下滑
privateintmDrift;
privateOnViewPagerListeneronViewPagerListener;
//吸顶，吸底
privatePagerSnapHelperpagerSnapHelper;
publicOnViewPagerListenergetOnViewPagerListener(){
returnonViewPagerListener;
}
publicvoidsetOnViewPagerListener(OnViewPagerListeneronViewPagerListener){
this.onViewPagerListener=onViewPagerListener;
}
publicDouYinLayoutManager(Contextcontext){
super(context);
}
publicDouYinLayoutManager(Contextcontext,intorientation,booleanreverseLayout){
super(context,orientation,reverseLayout);
pagerSnapHelper=newPagerSnapHelper();
}
/**
*当manager完全添加到recycleview中是会被调用
*@paramview
*/
@Override
publicvoidonAttachedToWindow(RecyclerViewview){
view.addOnChildAttachStateChangeListener(this);
pagerSnapHelper.attachToRecyclerView(view);
super.onAttachedToWindow(view);
}
@Override
publicbooleancanScrollVertically(){
returnsuper.canScrollVertically();
}
@Override
publicintscrollVerticallyBy(intdy,RecyclerView.Recyclerrecycler,RecyclerView.Statestate){
mDrift=dy;
returnsuper.scrollVerticallyBy(dy,recycler,state);
}
@Override
publicvoidonChildViewAttachedToWindow(@NonNullViewview){
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
publicvoidonChildViewDetachedFromWindow(@NonNullViewview){
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
publicvoidonScrollStateChanged(intstate){
switch(state){
caseRecyclerView.SCROLL_STATE_IDLE:
//当前显示的item
ViewsnapView=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=newDouYinLayoutManager(this,OrientationHelper.VERTICAL,false);
recyclerView.setLayoutManager(douYinLayoutManager);
recyclerView.setAdapter(newMyAdapter());
douYinLayoutManager.setOnViewPagerListener(newOnViewPagerListener(){
@Override
publicvoidonPageRelease(booleanisNest,Viewposition){
releaseVideo(position);
}
@Override
publicvoidonPageSelected(booleanisButten,Viewposition){
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，也希望大家多多支持毛票票。
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