Android 通知中的音乐播放器控件

Music player control in notification

提问by Dhaval Travadi

how to set notification with play/pause, next and previous button in android.!

如何在android中设置播放/暂停、下一个和上一个按钮的通知。！

I am new with Android & also at stack overflow. So please bear with me.

我是 Android 的新手，也是堆栈溢出。所以请耐心等待。

I set notification when song is start to play like below :

我在歌曲开始播放时设置通知，如下所示：

`

`

@SuppressLint("NewApi")
public void setNotification(String songName){
    String ns = Context.NOTIFICATION_SERVICE;
    NotificationManager notificationManager = (NotificationManager) getSystemService(ns);


    @SuppressWarnings("deprecation")
    Notification notification = new Notification(R.drawable.god_img, null, System.currentTimeMillis());

    RemoteViews notificationView = new RemoteViews(getPackageName(), R.layout.notification_mediacontroller);

    //the intent that is started when the notification is clicked (works)
    Intent notificationIntent = new Intent(this, AudioBookListActivity.class);
    PendingIntent pendingNotificationIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

    notification.contentView = notificationView;
    notification.contentIntent = pendingNotificationIntent;
    notification.flags |= Notification.FLAG_NO_CLEAR;

    //this is the intent that is supposed to be called when the button is clicked
    Intent switchIntent = new Intent(this, AudioPlayerBroadcastReceiver.class);
    PendingIntent pendingSwitchIntent = PendingIntent.getBroadcast(this, 0, switchIntent, 0);

    notificationView.setOnClickPendingIntent(R.id.btn_play_pause_in_notification, pendingSwitchIntent);
    notificationManager.notify(1, notification);        
}

`

`

I have create BroadcastReceiver like below : `

我已经创建了如下所示的 BroadcastReceiver：`

   private class AudioPlayerBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        System.out.println("intent action = " + action);
        long id = intent.getLongExtra("id", -1);

        if(Constant.PLAY_ALBUM.equals(action)) {
            //playAlbum(id);
        } else if(Constant.QUEUE_ALBUM.equals(action)) {
            //queueAlbum(id);
        } else if(Constant.PLAY_TRACK.equals(action)) {
            //playTrack(id);
        } else if(Constant.QUEUE_TRACK.equals(action)) {
            //queueTrack(id);
        } else if(Constant.PLAY_PAUSE_TRACK.equals(action)) {
 //                playPauseTrack();
            System.out.println("press play");
        } else if(Constant.HIDE_PLAYER.equals(action)) {
 //                hideNotification();
            System.out.println("press next");
        }
        else {
        }
    }

}`

Now, I set custom notification successfully but how can i handle notification buttons and its events like play/pause, previous and next... etc. I also try using broadcast receiver but could not get any response.

现在，我成功设置了自定义通知，但如何处理通知按钮及其事件，如播放/暂停、上一个和下一个...等。我也尝试使用广播接收器，但无法得到任何响应。

Seeking solution and guidance from experts, please help me out.

寻求高手的解决方法和指导，请帮帮我。

Thanks in advance.

提前致谢。

回答by Libin

You need to set a custom intent action, not the AudioPlayerBroadcastReceivercomponent class.

您需要设置一个custom intent action，而不是AudioPlayerBroadcastReceiver组件类。

Create a Intent with custom action name like this

创建一个具有自定义操作名称的 Intent，如下所示

  Intent switchIntent = new Intent("com.example.app.ACTION_PLAY");

Then, register the PendingIntentBroadcastreceiver

然后，注册PendingIntentBroadcast接收者

  PendingIntent pendingSwitchIntent = PendingIntent.getBroadcast(this, 100, switchIntent, 0);

Then, set a onClickfor the play control , do similar custom action for other controls if required.

然后，onClick为播放控件设置 a ，如果需要，为其他控件执行类似的自定义操作。

  notificationView.setOnClickPendingIntent(R.id.btn_play_pause_in_notification, pendingSwitchIntent);

Next,Register the custom action in AudioPlayerBroadcastReceiverlike this

接下来，AudioPlayerBroadcastReceiver像这样注册自定义操作

   <receiver android:name="com.example.app.AudioPlayerBroadcastReceiver" >
        <intent-filter>
            <action android:name="com.example.app.ACTION_PLAY" />
        </intent-filter>
    </receiver>

Finally, when play is clicked on NotificationRemoteViewslayout, you will receive the play actionby the BroadcastReceiver

最后，点击播放时NotificationRemoteViews的布局，您将收到play action由BroadcastReceiver

public class AudioPlayerBroadcastReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {

    String action = intent.getAction();

    if(action.equalsIgnoreCase("com.example.app.ACTION_PLAY")){
        // do your stuff to play action;
    }
   }
}

EDIT: how to set the intent filter for Broadcast receiver registered in code

编辑：如何为代码中注册的广播接收器设置意图过滤器

You can also set the Custom Actionthrough Intent filterfrom code for the registered Broadcast receiverlike this

您还可以 像这样 为注册设置Custom Action通过Intent filter代码Broadcast receiver

    // instance of custom broadcast receiver
    CustomReceiver broadcastReceiver = new CustomReceiver();

    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addCategory(Intent.CATEGORY_DEFAULT);
    // set the custom action
    intentFilter.addAction("com.example.app.ACTION_PLAY");
    // register the receiver
    registerReceiver(broadcastReceiver, intentFilter);