要解决这个问题,您可以在广播接收器的onReceive()方法中启动一个前台服务。以下是一个示例代码:
...
public class MyBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED)) {
Intent serviceIntent = new Intent(context, MyForegroundService.class);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
context.startForegroundService(serviceIntent);
} else {
context.startService(serviceIntent);
}
}
}
}
public class MyForegroundService extends Service {
private static final int NOTIFICATION_ID = 1;
@Override
public void onCreate() {
super.onCreate();
// 设置前台服务通知
NotificationCompat.Builder builder = new NotificationCompat.Builder(this, "channel_id")
.setContentTitle("前台服务")
.setContentText("正在运行...")
.setSmallIcon(R.drawable.ic_notification)
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel("channel_id", "前台服务", NotificationManager.IMPORTANCE_DEFAULT);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
startForeground(NOTIFICATION_ID, builder.build());
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
通过以上步骤,您可以在广播接收器被调用时启动前台服务,并在前台服务的onCreate()方法中设置前台服务通知。这样,广播接收器就可以正常工作并启动前台服务了。