Question

我为我的一个项目创建了一个后台流音乐播放服务。它的工作正常但在播放时我接到了电话，媒体并没有像其他应用那样停止播放。当我接听电话时，音乐仍在播放。

package mypackage;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.IBinder;
import android.support.v7.app.NotificationCompat;
import android.widget.Toast;

import mypackage.R;

public class StreamPlayer extends Service implements OnCompletionListener {
    MediaPlayer mediaPlayer;
    Notification noti;
    android.support.v4.app.NotificationCompat.Builder noticom;
    NotificationManager notiman;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onCreate() {

        mediaPlayer = new MediaPlayer();
        mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
        mediaPlayer.setOnBufferingUpdateListener(new MediaPlayer.OnBufferingUpdateListener() {
            @Override
            public void onBufferingUpdate(MediaPlayer mp, int percent) {
                Toast.makeText(StreamPlayer.this, "Buffering", Toast.LENGTH_LONG).show();
            }
        });
        try {
            mediaPlayer.setDataSource("http://149.56.185.83:8138/stream");
            mediaPlayer.prepare();
        }catch (Exception ex){
        }
        mediaPlayer.setOnCompletionListener(this);
        noticom = new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setCategory(MEDIA_SESSION_SERVICE)
                .setAutoCancel(true)
                .setContentTitle("Sample Streamed Music Player")
                .setOngoing(true)
                .setPriority(NotificationCompat.PRIORITY_HIGH)
                .setContentText("Now Playing")
                .setCategory(NotificationCompat.CATEGORY_EVENT);
        notiman = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    }


    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        if (!mediaPlayer.isPlaying()) {
            mediaPlayer.start();
            Toast.makeText(StreamPlayer.this, "Now Playing", Toast.LENGTH_SHORT).show();
            noti = noticom.build();
            notiman.notify(2017,noti);
        }
        return START_STICKY;
    }

    public void onDestroy() {
        if (mediaPlayer.isPlaying()) {
            mediaPlayer.stop();
            noticom.setOngoing(false);
            noticom.setContentText("Stopped");
            Toast.makeText(StreamPlayer.this, "Stopped", Toast.LENGTH_SHORT).show();
            noti = noticom.build();
            notiman.notify(2017,noti);
        }
        mediaPlayer.release();
    }

    public void onCompletion(MediaPlayer _mediaPlayer) {
        stopSelf();
    }

}

有人知道如何解决这个问题吗？

Answer 1

首先将其作为<style> .box-item { background-color: cornflowerblue; width: 100px; height: 120px; } .box-text { color:white; } </style> <div layout="row" style="padding: 32px;" ng-cloak> <md-whiteframe class="md-whiteframe-2dp box-item" md-colors="[enter image description here][1]background:'blue-400'}" flex-sm="45" flex-gt-sm="35" flex-gt-md="25" layout layout-align="end center" layout-margin> <span class="md-display-1 box-text">1349</span> <span class="box-text">New Feedbacks</span> </md-whiteframe> </div>返回第二次致电Service.START_REDELIVER_INTENT;

这可以是notificationFunction（）

startForeground(int id, notificationFunction());

对于音乐播放器，您需要Tensorflow documentation

Answer 2

我找到了解决方案。感谢您的支持。：）

public class MyActivity extends Activity implements OnAudioFocusChangeListener {

private AudioManager mAudioManager;

@Override
public void onCreate(Bundle savedInstanceState) {
    ...
    mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    mAudioManager.requestAudioFocus(this, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);
    ...
}

@Override
 public void onDestroy(){
     super.onDestroy();
     ...
     mAudioManager.abandonAudioFocus(this);
     ...
 }


@Override
public void onAudioFocusChange(int focusChange) {
    if(focusChange<=0) {
        //LOSS -> PAUSE
    } else {
        //GAIN -> PLAY
    }
}

在我的Android Java后台服务中需要帮助，以便在检测到呼叫时停止

2 个答案: