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当电视在Google TV中运行时,音频会集中在我的应用程序上

[英]Audio focus on my app when tv is running in google tv

当我在电视上浏览频道并启动应用程序时,我需要我的应用程序来获得音频焦点,而在背景播放时,我需要我的应用程序并释放焦点。 我试过了,但无法在Google电视上工作。 我尝试了mAudioManager.requestAudioFocus(this,AudioManager.STREAM_MUSIC,AudioManager.AUDIOFOCUS_GAIN); 它在device.ie中运行,即音乐随着应用程序启动而停止。 但不适用于带有任何参数的Google TV。 进行音频聚焦的步骤是:

1.在MainApp中

 AudioManager  mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
requestFocus();
  1. 在onresume()中

     protected void onResume() { super.onResume(); requestFocus(); } 

3.在onStop()

    protected void onStop(){
        abandonFocus();
        super.onStop();

        Log.e("APPLICATION", "APPLICATION onStop");
    }

4.在onDestroy()

public void onDestroy(){
    super.onDestroy();
    //Log.e("APPLICATION", "APPLICATION onDestroy");
    abandonFocus();
}

5. AudioFocus的方法。

/** Requests audio focus. Returns whether request was successful or not. */
        public boolean requestFocus() {
         return  AudioManager.AUDIOFOCUS_REQUEST_GRANTED ==
                mAudioManager.requestAudioFocus(this, AudioManager.STREAM_DTMF, AudioManager.AUDIOFOCUS_GAIN);


        }



        /** Abandons audio focus. Returns whether request was successful or not. */
        public boolean abandonFocus() {
            return AudioManager.AUDIOFOCUS_REQUEST_GRANTED == mAudioManager.abandonAudioFocus(this);
        }



        /**
         * Called by AudioManager on audio focus changes. We implement this by calling our
         * MusicFocusable appropriately to relay the message.
         */
        public void onAudioFocusChange(int focusChange) {

            switch (focusChange) {
                case AudioManager.AUDIOFOCUS_GAIN:
                    Log.e("AUDIOFOCUS","AUDIOFOCUS_GAIN");
                    break;
                case AudioManager.AUDIOFOCUS_LOSS:Log.e("AUDIOFOCUS","AUDIOFOCUS_LOSS");
                case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT:Log.e("AUDIOFOCUS","AUDIOFOCUS_LOSS_TRANSIENT");

                    break;
                case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK:Log.e("AUDIOFOCUS","AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK");
                    break;
                 default:
            }
        }

谁能帮我这个忙。 谁在Google电视中做了音频焦点。

谢谢,巴拉斯

我在这里尝试过,并在Google TV上获得/接收音频焦点。 问题可能出在您的应用之前运行的应用未释放音频焦点。

音频焦点确实可以在Google TV上使用,但并非所有应用程序都支持音频焦点。 我写了一篇有关如何正确使用Audio Focus的博客文章( http://android-developers.blogspot.com/2013/08/respecting-audio-focus.html ),但是对于忽略或不忽略它的应用程序没有解决方案使用音频焦点。

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