如何知道onSurfaceTextureAvailable是为哪个TextureView调用的

Question

我正在编写一个应用程序，我需要在 activity 上显示两个 TextureView(s)。我在 onSurfaceTextureAvailable():

中使用以下代码使用 MediaPlayer 对象将视频附加到每个 TextureView 实例

@Override
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i1) {

    Surface surface = new Surface(surfaceTexture);

    mMediaPlayer1 = new MediaPlayer();

    try {
        mMediaPlayer1.setDataSource(<filePath>);
    } catch (IOException e) {
        Log.e(TAG, "Unable to load the file from the file system", e);
        return;
    }

    mMediaPlayer1.setSurface(surface);
    mMediaPlayer1.setLooping(true);
    mMediaPlayer1.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
        @Override
        public void onPrepared(MediaPlayer mediaPlayer) {
            isPlaybackReady = true;
        }
    });

    mMediaPlayer1.prepareAsync();
}

现在，如果我有两个 TextureView 实例，我怎么知道 onSurfaceTextureAvailable(...) 的回调是针对哪个 TextureView。

另一种方法是在 onSurfaceTextureAvailable(...) 之外设置 MediaPlayer 对象，方法是调用 TextureView.getSurfaceTexture() 来控制关联的 SurfaceTexture。我也试过了，但总是 returns null。我还需要为此做些什么吗？

Answer 1

您可以只设置两个具有不同侦听器的 TextureView 实例。

textureView1.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
    @Override
    public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i1) {
        doSomething(textureView1, surfaceTexture, i, i1);
    }
    // implement other methods 


    });

textureView2.setSurfaceTextureListener(new TextureView.SurfaceTextureListener() {
    @Override
    public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i1) {
        doSomething(textureView2, surfaceTexture, i, i1);
    }

    // implement other methods 
    });

}

如何知道onSurfaceTextureAvailable是为哪个TextureView调用的

How to know onSurfaceTextureAvailable is called for which TextureView

video

android

android-mediaplayer

textureview