Android端播放器SDK进阶功能使用示例 |
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修改渲染View。 低版本的Android播放器SDK全局使用一个渲染View，在每次切换播放源时，先从布局中remove前一个View，再添加下一个View到当前界面上。从5.5.2.0版本开始，支持使用多个渲染View，在RecyclerView.ViewHolder的布局中添加多个View，在切换播放源时，可以预加载下一个播放源，以提升切换的顺畅度。您需要删除低版本的渲染View的代码，并添加新版本添加多个渲染View的代码，示例代码如下： 展开查看代码 /* 删除如下代码 如下几行代码为低版本添加渲染View的代码。会将渲染View添加到FrameLayout中，然后在切换播放源时，会将mPlayerViewContainer移除、添加。 */ private void initPlayer() { //... mPlayerViewContainer = View.inflate(getContext(), R.layout.layout_player_view, null); FrameLayout frameLayout = mPlayerViewContainer.findViewById(R.id.framelayout); FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT); View renderView = createRenderView(Common.RENDER_VIEW_NAME); frameLayout.addView(renderView, 0, params); //... } /* 添加或修改如下代码以添加多个渲染View 修改RecyclerView的item布局，以及对应的ViewHolder */ public final class MyHolder extends RecyclerView.ViewHolder { //... private Surface mSurface; MyHolder(@NonNull View itemView) { super(itemView); //... TextureView mTextureView = itemView.findViewById(R.id.texture_view); mTextureView.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() { @Override public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) { mSurface = new Surface(surface); } @Override public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {} @Override public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) { mSurface = null; return false; } @Override public void onSurfaceTextureUpdated(SurfaceTexture surface) {} }); } //... //对外呈现获取Surface的接口 public Surface getSurface() { return mSurface; } }修改RecyclerView中的item布局的示例代码如下： 展开查看代码 修改切换播放源的逻辑。 从Android播放器SDK 5.5.2.0版本开始，在调用moveToNext时，会增加对preRenderPlayer的调用，因此需要单独对渲染View（Surface）进行设置。其中，moveToNext、moveToPre、moveTo的逻辑有所差异。示例代码如下： 展开查看代码 /* 说明：mQuickPlayer是AlivcQuickPlayer类的实例对象，封装了ListPlayer的接口。 */ private void startPlay(int position, boolean isInitComplete) { //... //根据position获取ViewHolder实例对象 LittleVideoListAdapter.MyHolder holder = (LittleVideoListAdapter.MyHolder) recycler.findViewHolderForLayoutPosition(position); //... //1.moveToPre时，先设置Surface，再调用moveToPre if (holder != null) { mQuickPlayer.setSurface(holder.getSurface()); } mQuickPlayer.moveToPrev(video, position, mVideoSourceType); //2.moveTo时，先设置Surface，再调用moveTo if (holder != null) { mQuickPlayer.setSurface(holder.getSurface()); } //mQuickPlayer.startPlay()内部最终会调用moveTo()接口 mQuickPlayer.startPlay(video, position, mVideoSourceType); //3.moveToPre时，需要增加一个参数，将Surface传递进去 mQuickPlayer.moveToNext(video, position, mVideoSourceType, holder.getSurface()); //... }修改AlivcQuickPlayer类的示例代码如下： 展开查看代码 //修改moveToPre方法 public void moveToPrev(AlivcVideoInfo.Video source, final int position, VideoSourceType videoSourceType) { //... //增加如下代码 mVideoListPlayer.clearScreen(); if (videoSourceType == VideoSourceType.TYPE_STS) { mVideoListPlayer.moveToPrev(createStsInfo(source)); } else { mVideoListPlayer.moveToPrev(); } } //增加moveToNext的重载方法 public void moveToNext(AlivcVideoInfo.Video source, int position, VideoSourceType videoSourceType, Surface surface) { //... //moveToNext时，可以获取preRenderPlayer对象，并使用该Player播放 IPlayer preRenderPlayer = mVideoListPlayer.getPreRenderPlayer(); if (preRenderPlayer != null) { preRenderPlayer.clearScreen(); preRenderPlayer.setSurface(surface); preRenderPlayer.start(); mVideoListPlayer.setSurface(null); } else { mVideoListPlayer.clearScreen(); mVideoListPlayer.setSurface(surface); } //STS播放方式 if (videoSourceType == VideoSourceType.TYPE_STS) { //当preRenderPlayer不为null时候，调用moveToNextWithPrerendered进行播放 if (preRenderPlayer != null) { mVideoListPlayer.moveToNextWithPrerendered(createStsInfo(source)); } else { mVideoListPlayer.moveToNext(createStsInfo(source)); } } else { //URL播放方式 if (preRenderPlayer != null) { mVideoListPlayer.moveToNextWithPrerendered(); } else { mVideoListPlayer.moveToNext(); } } }可选：修改滑动播放的逻辑。 支持通过修改滑动播放的逻辑，实现在滑动切换视频时，当滑动到下一个视频的一半画面出现时，开始播放下一个视频。通过修改PagerLayoutManager类中的代码实现，即当RecyclerView的item出现在屏幕一半时，切换播放源，示例代码如下： 展开查看代码 recyclerView.addOnScrollListener(new OnScrollListener() { private int measuredHeight; private int mScrollDiff; @Override public void onScrollStateChanged(RecyclerView recyclerView, int newState) { super.onScrollStateChanged(recyclerView, newState); if (newState == RecyclerView.SCROLL_STATE_DRAGGING) { measuredHeight = recyclerView.getMeasuredHeight(); mScrollDiff = 0; } if (newState == RecyclerView.SCROLL_STATE_IDLE) { mScrollDiff = 0; View viewIdle = mPagerSnapHelper.findSnapView(PagerLayoutManager.this); if (viewIdle == null) { return; } int positionIdle = getPosition(viewIdle); if (mOnViewPagerListener != null && getChildCount() == 1 && mOldPosition != positionIdle) { mOnViewPagerListener.onPageSelected(positionIdle, positionIdle == getItemCount() - 1, viewIdle); mOldPosition = positionIdle; } } } @Override public void onScrolled(RecyclerView recyclerView, int dx, int dy) { super.onScrolled(recyclerView, dx, dy); if (measuredHeight > 0 && mOnViewPagerListener != null) { mScrollDiff += dy; changeVideoAfterScrolled(recyclerView, dy >= 0); } } private void changeVideoAfterScrolled(RecyclerView recyclerView, boolean isNext) { if (Math.abs(mScrollDiff) >= measuredHeight / 2) { View snapView = mPagerSnapHelper.findSnapView(PagerLayoutManager.this); if (snapView != null) { int position = getPosition(snapView); if (mOldPosition != position) { if (isNext) { mOnViewPagerListener.onPageHideHalf(position - 1); } else { mOnViewPagerListener.onPageHideHalf(position + 1); } mOnViewPagerListener.onPageSelected(position, false, snapView); mOldPosition = position; recyclerView.smoothScrollToPosition(position); mScrollDiff = 0; } } } } }); |
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