Question

永远不会调用VideoView中的onSurfaceTextureAvailable ...
我有这个持有textureview的视图。

public class MyMediaPlayer extends RelativeLayout{

Context mContext;
VideoView player;//this is a custom textureview that streams video

public MyMediaPlayer(Context context) {
    super(context);
    mContext = context; 
    init();
}
public MyMediaPlayer(Context context, AttributeSet attrs) {
    super(context, attrs);
    mContext = context; 
    init();
}
public MyMediaPlayer(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    mContext = context; 
    init();
}
private void init() {
    setBackgroundColor(Color.BLACK);    
    player = new VideoView(mContext);
    LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
    addView(player,lp);
}
public void setURL(String url){
    player.setVideoPath(url);
}
public void start(){
    player.start();
}

}

VideoView的设置如下：

public class VideoView extends TextureView {

public VideoView(final Context context) {
    super(context);
    mContext = context;
    initVideoView();
}

public VideoView(final Context context, final AttributeSet attrs) {
    super(context, attrs);
    mContext = context;
    initVideoView();
}

public VideoView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    mContext = context;
    initVideoView();
}

public void initVideoView() {
    Log.d(LOG_TAG, "Initializing video view.");
    videoHeight = 0;
    videoWidth = 0;
    setFocusable(false);
    setSurfaceTextureListener(surfaceTextureListener);
}
SurfaceTextureListener surfaceTextureListener = new SurfaceTextureListener() {
    @Override
    public void onSurfaceTextureAvailable(final SurfaceTexture surface, final int width, final int height) {
        Log.d(LOG_TAG, "Surface texture now avaialble.");
        surfaceTexture = surface;
        openVideo();
    }

    @Override
    public void onSurfaceTextureSizeChanged(final SurfaceTexture surface, final int width, final int height) {
        Log.d(LOG_TAG, "Resized surface texture: " + width + '/' + height);
        surfaceWidth = width;
        surfaceHeight = height;
        boolean isValidState =  (targetState == STATE_PLAYING);
        boolean hasValidSize = (videoWidth == width && videoHeight == height);
        if (mediaPlayer != null && isValidState && hasValidSize) {
            start();
        }
    }

    @Override
    public boolean onSurfaceTextureDestroyed(final SurfaceTexture surface) {
        Log.i(LOG_TAG, "Destroyed surface number " + number);
        return false;
    }

    @Override
    public void onSurfaceTextureUpdated(final SurfaceTexture surface) {

    }
};
}

MyMediaPlayer设置为片段的xml 如果我将VideoView放在片段中，那么一切正常但是如果它在mymediaplayer里面，片段onSurfaceTextureAvailable永远不会被调用。

Answer 1

如果onSurfaceTextureAvailable已经可用，则似乎无法调用{p> SurfaceTexture。您可以检查它是否可用并调用onSurfaceTextureAvailable方法，如下所示。

textureView.setSurfaceTextureListener(this);

/*
 * onSurfaceTextureAvailable does not get called if it is already available.
 */
if (view.isAvailable()) {
    onSurfaceTextureAvailable(view.getSurfaceTexture(), view.getWidth(), view.getHeight());
}

Answer 2

至于我，解决问题的关键是为AndroidManifest.xml中的活动添加android：hardwareAccelerated =“true”。

只有在具有hardwareAccelerated属性的TextureView的活动上，才能在Scrolling-Container（如ListView，ScrollView，ViewPager等）中使用TextureView。

The last few words in this blog mentioned that

希望它适合你。

Answer 3

在我的情况下，我最初让我的TextureView不可见，然后在获取一些数据后加载，这导致onSurfaceTextureAvailable不被调用。我猜测TextureView被称为'可用'，它必须是可见的。我的解决方案是从一开始就让TextureView可见。

Answer 4

您需要启用硬件加速才能使用TextureView。如果不这样做，则不会调用其回调方法。只需在你的活动的onCreate方法中噘嘴：

getWindow().addFlags(WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED);

它对我有用。

Answer 5

我有同样的问题，奇怪地用以下代码解决了它

videoPreview = (TextureView) linearLayout.findViewById(R.id.videoView);
FrameLayout.LayoutParams params = (FrameLayout.LayoutParams)videoPreview.getLayoutParams();
params.height = 130;
params.width = 508;
videoPreview.setLayoutParams(params);
videoPreview.setSurfaceTextureListener(this);

更奇怪的是，如果我只设置剂量工作的宽度或高度。

Answer 6

我遇到了同样的问题，onSurfaceTextureAvailable从未打过电话。最后，我发现我的textureview在setSurfaceTextureListener之前是不可见的。因此，请先检查textureview的状态。

Answer 7

尝试将mTextureView.setSurfaceTextureListener()放入onCreate()。

RootCause是：onCreate() - ＆gt; drawUI - ＆gt; getHardwareLayer() - ＆gt; callback SurfaceTextureListener。因此，要在UI绘制或重绘UI之前修复此问题：setSurfaceTextureListener()。

textureview onSurfaceTextureAvailable从未在fragment内部调用relativelayout

7 个答案: