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Description 谢谢作者@lipangit 开源出来如此优秀的框架,受益匪浅
项目中实现了类似汽车之家那种滑动RecycleView 自动播放视频的效果,分享给大家
原理
1.添加OnScrollListener 监听 ,循环遍历 可见区域(就是 lastVisibleItem - firstVisibleItem的个数)
内的播放器控件
最后通过 getLocalVisibleRect(rect) 方法计算出哪个播放器完全显示出来,然后startVideo()进行播放
2.在适当的时机跳出循环,只处理可见区域内的第一个播放器
getLocalVisibleRect原理可以参照这个链接
我使用的相关版本
...
compileSdkVersion 23
buildToolsVersion '25.0.3'
minSdkVersion 16
targetSdkVersion 23
...
compile 'cn.jzvd:jiaozivideoplayer:6.2.7'
自己项目中RecycleView实现视频自动播放的代码如下
AutoPlayScrollListener listener = new AutoPlayScrollListener ();
recyclerView .addOnScrollListener (listener );
/**
* 监听recycleView滑动状态,
* 自动播放可见区域内的第一个视频
*/
private static class AutoPlayScrollListener extends RecyclerView .OnScrollListener {
private int firstVisibleItem = 0 ;
private int lastVisibleItem = 0 ;
private int visibleCount = 0 ;
/**
* 被处理的视频状态标签
*/
private enum VideoTagEnum {
/**
* 自动播放视频
*/
TAG_AUTO_PLAY_VIDEO ,
/**
* 暂停视频
*/
TAG_PAUSE_VIDEO
}
@ Override
public void onScrollStateChanged (RecyclerView recyclerView , int newState ) {
super .onScrollStateChanged (recyclerView , newState );
switch (newState ) {
case RecyclerView .SCROLL_STATE_IDLE :
autoPlayVideo (recyclerView , VideoTagEnum .TAG_AUTO_PLAY_VIDEO );
default :
// 滑动时暂停视频 autoPlayVideo(recyclerView, VideoTagEnum.TAG_PAUSE_VIDEO);
break ;
}
}
@ Override
public void onScrolled (RecyclerView recyclerView , int dx , int dy ) {
super .onScrolled (recyclerView , dx , dy );
RecyclerView .LayoutManager layoutManager = recyclerView .getLayoutManager ();
if (layoutManager instanceof LinearLayoutManager ) {
LinearLayoutManager linearManager = (LinearLayoutManager ) layoutManager ;
firstVisibleItem = linearManager .findFirstVisibleItemPosition ();
lastVisibleItem = linearManager .findLastVisibleItemPosition ();
visibleCount = lastVisibleItem - firstVisibleItem ;
}
}
/**
* 循环遍历 可见区域的播放器
* 然后通过 getLocalVisibleRect(rect)方法计算出哪个播放器完全显示出来
* <p>
* getLocalVisibleRect相关链接:http://www.cnblogs.com/ai-developers/p/4413585.html
*
* @param recyclerView
* @param handleVideoTag 视频需要进行状态
*/
private void autoPlayVideo (RecyclerView recyclerView , VideoTagEnum handleVideoTag ) {
for (int i = 0 ; i < visibleCount ; i ++) {
if (recyclerView != null && recyclerView .getChildAt (i ) != null && recyclerView .getChildAt (i ).findViewById (R .id .videoplayer ) != null ) {
JZVideoPlayerStandard homeGSYVideoPlayer = (JZVideoPlayerStandard ) recyclerView .getChildAt (i ).findViewById (R .id .videoplayer );
Rect rect = new Rect ();
homeGSYVideoPlayer .getLocalVisibleRect (rect );
int videoheight = homeGSYVideoPlayer .getHeight ();
if (rect .top == 0 && rect .bottom == videoheight ) {
handleVideo (handleVideoTag , homeGSYVideoPlayer );
// 跳出循环,只处理可见区域内的第一个播放器
break ;
}
}
}
}
/**
* 视频状态处理
*
* @param handleVideoTag 视频需要进行状态
* @param homeGSYVideoPlayer JZVideoPlayer播放器
*/
private void handleVideo (VideoTagEnum handleVideoTag , JZVideoPlayerStandard homeGSYVideoPlayer ) {
switch (handleVideoTag ) {
case TAG_AUTO_PLAY_VIDEO :
if ((homeGSYVideoPlayer .currentState != JZVideoPlayerStandard .CURRENT_STATE_PLAYING )) {
// 进行播放
homeGSYVideoPlayer .startVideo ();
}
break ;
case TAG_PAUSE_VIDEO :
if ((homeGSYVideoPlayer .currentState != JZVideoPlayerStandard .CURRENT_STATE_PAUSE )) {
// 模拟点击,暂停视频
homeGSYVideoPlayer .startButton .performClick ();
}
break ;
default :
break ;
}
}
}
对于item滑出可见区域后,进行视频回收的逻辑,可以参照demo中的ActivityListViewRecyclerView
相关代码如下所示
// recycle this video when the item leaves the screen.
recyclerView .addOnChildAttachStateChangeListener (new RecyclerView .OnChildAttachStateChangeListener () {
@ Override
public void onChildViewAttachedToWindow (View view ) {
}
@ Override
public void onChildViewDetachedFromWindow (View view ) {
JZVideoPlayer jzvd = view .findViewById (R .id .videoplayer );
if (jzvd != null && JZUtils .dataSourceObjectsContainsUri (jzvd .dataSourceObjects , JZMediaManager .getCurrentDataSource ())) {
if (JZVideoPlayerManager .getCurrentJzvd ().currentScreen != JZVideoPlayer .SCREEN_WINDOW_FULLSCREEN ){
JZVideoPlayer .releaseAllVideos ();
}
}
}
});
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谢谢作者@lipangit 开源出来如此优秀的框架,受益匪浅
项目中实现了类似汽车之家那种滑动RecycleView 自动播放视频的效果,分享给大家
原理
getLocalVisibleRect原理可以参照这个链接
我使用的相关版本
自己项目中RecycleView实现视频自动播放的代码如下
对于item滑出可见区域后,进行视频回收的逻辑,可以参照demo中的ActivityListViewRecyclerView
相关代码如下所示