通知中的音乐播放器控制
Posted
技术标签:
【中文标题】通知中的音乐播放器控制【英文标题】:Music player control in notification 【发布时间】:2014-06-20 01:42:12 【问题描述】:如何在android中设置带有播放/暂停、下一个和上一个按钮的通知!
我是 Android 新手,也遇到堆栈溢出问题。所以请多多包涵。
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);
`
我创建了如下所示的 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
`
现在,我成功设置了自定义通知,但我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。
寻求专家的解决方案和指导,请帮助我。
提前致谢。
【问题讨论】:
关注这个..***.com/questions/12526228/… 【参考方案1】:您需要设置custom intent action
,而不是AudioPlayerBroadcastReceiver
组件类。
使用这样的自定义操作名称创建一个 Intent
Intent switchIntent = new Intent("com.example.app.ACTION_PLAY");
然后,注册PendingIntent
Broadcast
接收器
PendingIntent pendingSwitchIntent = PendingIntent.getBroadcast(this, 100, switchIntent, 0);
然后,为播放控件设置一个onClick
,如果需要,对其他控件执行类似的自定义操作。
notificationView.setOnClickPendingIntent(R.id.btn_play_pause_in_notification, pendingSwitchIntent);
接下来,像这样在AudioPlayerBroadcastReceiver
注册自定义动作
<receiver android:name="com.example.app.AudioPlayerBroadcastReceiver" >
<intent-filter>
<action android:name="com.example.app.ACTION_PLAY" />
</intent-filter>
</receiver>
最后,当在Notification
RemoteViews
布局上点击播放时,您将收到BroadcastReceiver
的play action
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;
编辑:如何为代码中注册的广播接收器设置意图过滤器
您还可以像这样从注册的Broadcast receiver
的代码中设置Custom Action
到Intent filter
// 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);
【讨论】:
你能帮我吗我的应用程序以某种方式终止,我没有找到如何重新启动应用程序 我的应用程序已终止但通知未终止在这种情况下该怎么办? @PriyankaChauhan 您可以在ondestroy()
中关闭通知,以防您的活动被杀死,通知也将关闭。
但如果应用程序被操作系统终止,onDestroy() 不会调用
如何在执行专辑封面、标题等未决意图后更改视图?以上是关于通知中的音乐播放器控制的主要内容,如果未能解决你的问题,请参考以下文章
Android开发本地及网络Mp3音乐播放器(十九)通知媒体库更新刚下载的MP3