Question

有一个代码可以通过ExoPlayer 2播放来自互联网的音频。当来电声音被静音为0时，以及当通话结束时，如何恢复到原来的声音？

public class Player extends AppCompatActivity {

    private String stream;
    private boolean isPlay;

    private ImageButton btnPLayPause;

    BandwidthMeter bandwidthMeter;
    TrackSelector trackSelector;
    SimpleExoPlayer player;
    private SimpleExoPlayerView simpleExoPlayerView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_player);

        btnPLayPause = (ImageButton) findViewById(R.id.btnPLayPause);

        stream = "http://site.ru/radio.mp3";

        bandwidthMeter = new DefaultBandwidthMeter();
        TrackSelection.Factory streamSelectionFactory = new AdaptiveVideoTrackSelection.Factory(bandwidthMeter);
        trackSelector = new DefaultTrackSelector(streamSelectionFactory);

        player = ExoPlayerFactory.newSimpleInstance(this, trackSelector, new DefaultLoadControl());
        simpleExoPlayerView = new SimpleExoPlayerView(this);
        simpleExoPlayerView = (SimpleExoPlayerView) findViewById(R.id.player_view);
        simpleExoPlayerView.setUseController(true);
        simpleExoPlayerView.requestFocus();
        simpleExoPlayerView.setPlayer(player);
        Uri streamUri = Uri.parse(stream);
        DefaultBandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
        DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(this, "yourApplicationName"), bandwidthMeter);
        ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();

        MediaSource mediaSource = new ExtractorMediaSource(streamUri, dataSourceFactory, extractorsFactory, null, null);
            player.prepare(mediaSource);

        player.setPlayWhenReady(true);
        isPlay = true;

        if (player.getPlayWhenReady() == true) {
            btnPLayPause.setImageResource(R.drawable.icon_stop);
        }

    }

    @Override
    protected void onDestroy() {
        NotificationManager notifManager= (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notifManager.cancelAll();
        super.onDestroy();
        player.release();
    }

    public void onPlayPause(View view) {
        if (isPlay == true) {
            if (player.getPlayWhenReady() == true) {
                player.setPlayWhenReady(false);
                isPlay = false;
                btnPLayPause.setImageResource(R.drawable.icon_play);
            }
        } else if (isPlay == false) {
            if (player.getPlayWhenReady() == false) {
                player.setPlayWhenReady(true);
                isPlay = true;
                btnPLayPause.setImageResource(R.drawable.icon_stop);
            }
        }
    }

}

希望给出类似示例的示例或链接

Answer 1

你需要实现PhoneStateListener，类似：

class TeleListener extends PhoneStateListener {
    public void onCallStateChanged(int state, String incomingNumber) {
        super.onCallStateChanged(state, incomingNumber);
        switch (state) {
            case TelephonyManager.CALL_STATE_IDLE:
                // CALL_STATE_IDLE;
                setVolumeOn();
                break;
            case TelephonyManager.CALL_STATE_OFFHOOK:
                // CALL_STATE_OFFHOOK; call ends                    
                break;
            case TelephonyManager.CALL_STATE_RINGING:
                // CALL_STATE_RINGING
                silent();
                break;
            default:
                break;
        }
    }
}

silent（）和setVolumeOn（）取决于你，基本上你必须将当前的音量保持在silent（）并静音音频，然后在setVolumeOn（）上恢复它

这是你如何注册（开始听）：

private TeleListener teleListener;
private TelephonyManager telephonyMgr; 
public void start() {
    teleListener = new TeleListener();
    telephonyMgr.listen(teleListener, PhoneStateListener.LISTEN_CALL_STATE);
}

取消注册（停止听）：

public void stop() {
    telephonyMgr.listen(teleListener, PhoneStateListener.LISTEN_NONE);
}

在应用程序中静音

1 个答案: