Android 通知栏，锁屏播放音乐，类似音乐播放器 |
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Android 通知栏，锁屏播放音乐，类似音乐播放器
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项目中需要用到播放音频的功能，想做一个类似酷狗、酷我这样的音频播放功能，在通知栏和锁屏时都可以操控音乐，开发中发现oppo reno手机在锁屏时不显示通知栏，研究了整整一天终于解决，特作记录，给遇到同样问题的童鞋做个参考。 整体功能实现思路如下： 1.播放音乐时启动前台服务，在服务中创建播放器和通知并且创建广播,音频的播控通过广播来操控，实现跨模块； 2.在切换音频源、播放、暂停的时候通过重新创建通知来实现通知的界面更新； 3.在关闭音频功能时关掉通知，释放播放器。
细节，以下只做简单说明，具体实现方式请百度，本文只是为了解决锁屏不显示通知的问题，已测试正常使用的机型有华为、荣耀、oppo： 1.通知的自定义view为remoteView； 2.通知创建时需要判断8.0渠道配置： private fun createChannel(context: Context, channel_id: String, channel_name: CharSequence, description: String) { //8.0以上版本通知适配 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { val notificationChannel = NotificationChannel(channel_id, channel_name, NotificationManager.IMPORTANCE_HIGH) notificationChannel.setSound(null, null) notificationChannel.enableLights(false) //通知灯 notificationChannel.lightColor = Color.RED // 通知灯颜色 notificationChannel.setShowBadge(false) //角标 notificationChannel.lockscreenVisibility = Notification.VISIBILITY_PUBLIC // 所有情况下显示，包括锁屏 notificationChannel.description = description val notificationManager = context.getSystemService(NotificationManager::class.java) notificationManager.createNotificationChannel(notificationChannel) } } /** * 返回一个前台通知 * * @param channel_id 通知渠道id，注意8.0创建通知的时候渠道id与此要匹配 * @param remoteViews 自定义通知view * @return */ fun createForeNotification(context: Context, channel_id: String, channel_name: CharSequence, description: String, remoteViews: RemoteViews): Notification { CreateChannel(context, channel_id, channel_name, description) val builder = NotificationCompat.Builder(context, channel_id) .setSmallIcon(R.mipmap.ic_launcher) //最顶部的小图标 .setContent(remoteViews) .setAutoCancel(true) // 允许自动清除 .setPriority(NotificationCompat.PRIORITY_MAX) .setSound(Uri.EMPTY) //声音 .setDefaults(NotificationCompat.DEFAULT_ALL) //统一消除声音和震动 .setVisibility(Notification.VISIBILITY_PUBLIC) // 所有情况下显示，包括锁屏 return builder.build() }3.对通知设置点击事件,切换、暂停、播放的原理一样，如果别的模块需要调用播控的话直接发送广播即可： // 暂停 val pauseIntent = Intent(AudioBroadCastReceiver.PAUSE) val pausePendingIntent = PendingIntent.getBroadcast(this, 0, pauseIntent, 0) notifyLayout.setOnClickPendingIntent(R.id.iv_music_pause, pausePendingIntent) // 播放 val playIntent = Intent(AudioBroadCastReceiver.PLAY) val playPendingIntent = PendingIntent.getBroadcast(this, 0, playIntent, 0) notifyLayout.setOnClickPendingIntent(R.id.iv_music_play, playPendingIntent) object AudioBroadCastReceiver : BroadcastReceiver() { private val TAG = javaClass.simpleName const val PLAY_PRE = "com.audio.PLAY_PRE" const val PLAY_NEXT = "com.audio.PLAY_NEXT" const val PLAY = "com.audio..PLAY" const val PAUSE = "com.audio.PAUSE" // 停止播放器、关闭通知、关闭服务、关掉播放界面 const val CLOSE = "com.audio.CLOSE" var receiveListener: ((Context, Intent?) -> Unit)? = null override fun onReceive(context: Context, intent: Intent?) { Logger.d(TAG, "onReceive: ${intent?.action}") val audioPlayerHelper = App.get().audioPlayerHelper intent?.let { when (it.action) { PLAY_PRE -> { Logger.d(TAG, "onReceive: 上一节") audioPlayerHelper.playPre() } PLAY_NEXT -> { Logger.d(TAG, "onReceive: 下一节") audioPlayerHelper.playNext() } PLAY -> { Logger.d(TAG, "onReceive: 播放") audioPlayerHelper.play() } PAUSE -> { Logger.d(TAG, "onReceive: 暂停") audioPlayerHelper.pause() } CLOSE -> { Logger.d(TAG, "onReceive: 停止") audioPlayerHelper.stop() } else -> { } } receiveListener?.invoke(context,intent) } } }4.服务中启动通知： startForeground(AudioNotifyHelper.NOTIFY_ID, notification)5.监听锁屏，我遇到的问题就是在oppo手机上锁屏不显示通知，其实解决办法就是监听锁屏，在锁屏后再次发送一次通知即可： public class HomeWatcherReceiver extends BroadcastReceiver { private final String TAG = getClass().getSimpleName(); private static final String SYSTEM_DIALOG_REASON_KEY = "reason"; private static final String SYSTEM_DIALOG_REASON_RECENT_APPS = "recentapps"; private static final String SYSTEM_DIALOG_REASON_HOME_KEY = "homekey"; private static final String SYSTEM_DIALOG_REASON_LOCK = "lock"; private static final String SYSTEM_DIALOG_REASON_ASSIST = "assist"; private PhysicalKeyListener listener; @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); Logger.i(TAG, "onReceive: action: " + action); if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(action)) { // android.intent.action.CLOSE_SYSTEM_DIALOGS String reason = intent.getStringExtra(SYSTEM_DIALOG_REASON_KEY); Logger.i(TAG, "reason: " + reason); if (SYSTEM_DIALOG_REASON_HOME_KEY.equals(reason)) { // 短按Home键 Logger.i(TAG, "homekey"); if(listener != null){ listener.onHome(); } } else if (SYSTEM_DIALOG_REASON_RECENT_APPS.equals(reason)) { // 长按Home键 或者 activity切换键 Logger.i(TAG, "long press home key or activity switch"); if(listener != null){ listener.onRecentApp(); } } else if (SYSTEM_DIALOG_REASON_LOCK.equals(reason)) { // 锁屏 Logger.i(TAG, "lock"); if(listener != null){ listener.onLock(); } } else if (SYSTEM_DIALOG_REASON_ASSIST.equals(reason)) { // samsung 长按Home键 Logger.i(TAG, "assist"); if(listener != null){ listener.onAssist(); } } } else if (Intent.ACTION_SCREEN_ON.equals(action)) { // 开屏 Logger.i(TAG, "onReceive: 开屏"); if(listener != null){ listener.onScreenOn(); } } else if (Intent.ACTION_SCREEN_OFF.equals(action)) { // 锁屏 Logger.i(TAG, "onReceive: 锁屏"); if(listener != null){ listener.onScreenOff(); } } else if (Intent.ACTION_USER_PRESENT.equals(action)) { // 解锁 Logger.i(TAG, "onReceive: 解锁"); if(listener != null){ listener.onUserPresent(); } } } public void setListener(PhysicalKeyListener listener) { this.listener = listener; } }6.在服务中注册锁屏广播监听，监听到锁屏再发一次通知即可。 至此，仿音乐播放器的通知栏和锁屏操控音乐就OK了，如果有特殊机型或者其他情况不管用的，评论区咱们互相讨论、学习。 共勉！ 效果如下：
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