我尝试了线程:
Cannot keep android service alive after app is closed
Android Service Stops When App Is Closed
我尝试没有成功
即使应用程序被杀死,我也希望IntentService在后台运行。但是,如果我从“最近”屏幕中删除我的应用程序,则我的服务将停止。如何避免这种情况?换句话说,即使我的应用程序已从最近的应用程序中关闭,如何保持我的服务运行?
我的ForegroundService:
public class ForegroundService extends Service {
private static final String LOG_TAG = "ForegroundService";
public static boolean IS_SERVICE_RUNNING = false;
private NotificationManagerCompat notificationManagerCompat;
final NotificationCompat.Builder playingChannelID = new NotificationCompat.Builder(this, Constants.NOTIFICATION_CHANNEL_ID);
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
notificationManagerCompat = NotificationManagerCompat.from(this);
if (intent != null && intent.getAction().equals(Constants.ACTION.STARTFOREGROUND_ACTION)) {
showNotification();
} else if (intent != null && intent.getAction().equals(Constants.ACTION.STOPFOREGROUND_ACTION)) {
MainActivity.exoPlayer.setPlayWhenReady(false);
notificationManagerCompat.cancel(Constants.NOTIFICATION_ID.FOREGROUND_SERVICE);
stopSelf();
}
return START_STICKY;
}
private void showNotification() {
createNotificationChannel();
Intent notificationIntent = new Intent(this, MainActivity.class);
notificationIntent.setAction(Constants.ACTION.MAIN_ACTION);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_CLEAR_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
notificationIntent, 0);
Intent playIntent = new Intent(this, ForegroundService.class);
playIntent.setAction(Constants.ACTION.STOPFOREGROUND_ACTION);
PendingIntent pplayIntent = PendingIntent.getService(this, 0,
playIntent, 0);
Bitmap icon = BitmapFactory.decodeResource(getResources(),
R.drawable.r);
playingChannelID.setContentTitle("Service");
playingChannelID.setContentText("Playing...");
playingChannelID.setSmallIcon(R.drawable.Service);
playingChannelID.setLargeIcon(Bitmap.createScaledBitmap(icon, 128, 128, false));
playingChannelID.setContentIntent(pendingIntent);
playingChannelID.setOngoing(true);
playingChannelID.addAction(android.R.drawable.ic_delete, "Turn Off",
pplayIntent).build();notificationManagerCompat.notify(Constants.NOTIFICATION_ID.FOREGROUND_SERVICE, playingChannelID.build());
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public IBinder onBind(Intent intent) {
// Used only in case if services are bound (Bound Services).
return null;
}
private void createNotificationChannel() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = Constants.NOTIFICATION_NAME;
String description = Constants.NOTIFICATION_DESCRIPTION;
int importance = NotificationManager.IMPORTANCE_LOW;
NotificationChannel channel = new NotificationChannel(Constants.NOTIFICATION_CHANNEL_ID, name, importance);
channel.setDescription(description);
NotificationManager notificationManager = getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
}
}
我的常数:
public class Constants {
public static String NOTIFICATION_CHANNEL_ID = "NOTIFICATION_CHANNEL_ID_RADIO";
public static String NOTIFICATION_NAME = "RADIO_NOTIFICATION";
public static String NOTIFICATION_DESCRIPTION = "NOTIFICATION_DESCRIPTION";
public interface ACTION {
public static String MAIN_ACTION = "com.marothiatechs.foregroundservice.action.main";
public static String PLAY_ACTION = "com.marothiatechs.foregroundservice.action.play";
public static String STARTFOREGROUND_ACTION = "com.marothiatechs.foregroundservice.action.startforeground";
public static String STOPFOREGROUND_ACTION = "com.marothiatechs.foregroundservice.action.stopforeground";
}
public interface NOTIFICATION_ID {
public static int FOREGROUND_SERVICE = 101;
}
}
我的清单:
<service android:name=".service.ForegroundService" >
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>
</service>
打开应用程序后,我看到该服务正在运行。通过主页按钮最小化应用程序时,它仍在运行。通过后退按钮关闭应用程序时,它仍在运行。但是,如果我如上所述杀死它,它将停止。我该如何解决?
答案 0 :(得分:0)
如果需要前台服务,则应调用startForeground()方法。 如果您不希望在Oreo设备及更高版本上使用ANR,建议您阅读article。如果您在小米设备上测试您的应用,则需要允许您的应用在设置中自动启动。