我正在尝试创建一个应用程序，允许用户在设置的时间间隔或手动静音设备。我还希望用户能够输入更复杂的规则，例如仅在连接到特定WiFi网络、蓝牙设备或进入地理围栏时将手机静音。在静音模式下，我希望允许用户创建联系人列表，使电话仍会响铃。
为此，我创建了一个前台服务，在其中注册广播接收器。然而，只有几分钟后，自从活动离开前台后，接收器就停止按时工作并且更新也变得不规律。
这个问题发生在一个安装有Android 8系统的设备上（Huawei/Honor 7x）。
注：我尝试将应用程序添加到Doze白名单并禁用特定厂商的电池优化，但没有改变任何事情。
以下是我的代码的MCVE。每当服务中的接收器被触发时，一些 int 值会递增，然后它们会显示在通知中。在我的设备上，自从活动离开前台后，这些值在几分钟后就停止增加：
清单权限：
为此，我创建了一个前台服务，在其中注册广播接收器。然而，只有几分钟后，自从活动离开前台后，接收器就停止按时工作并且更新也变得不规律。
这个问题发生在一个安装有Android 8系统的设备上（Huawei/Honor 7x）。
注：我尝试将应用程序添加到Doze白名单并禁用特定厂商的电池优化，但没有改变任何事情。
以下是我的代码的MCVE。每当服务中的接收器被触发时，一些 int 值会递增，然后它们会显示在通知中。在我的设备上，自从活动离开前台后，这些值在几分钟后就停止增加：
清单权限：
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS"/>
<uses-permission android:name="android.permission.BLUETOOTH"/>
声明的服务清单
<service android:name=".PhoneService"/>
启动服务的内部活动
//for the sake of simplicity, I omit the code where runtime permissions are requested
Intent foregroundIntent = new Intent(this, PhoneService.class);
foregroundIntent.putExtra(PhoneService.EXTRA_ACTION, PhoneService.ACTION_START);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
startForegroundService(foregroundIntent);
} else {
startService(foregroundIntent);
}
服务类
public class PhoneService extends Service {
private static final String NOTIFICATION_CATEGORY = "notification_category";
private static final int NOTIFICATION_REQUEST_CODE = 0;
private static final String CHANNEL_ID = "test_channel";
private static final String CHANNEL_NAME = "test channel";
private static final int NOTIFICATION_ID = 1;
public static final String EXTRA_ACTION = "extra_action";
public static final String ACTION_START = "action_start";
public static final String ACTION_STOP = "action_stop";
private static final int STOP_ID = 2;
private int phoneReceiveCount = 0;
private int btReceiveCount = 0;
BroadcastReceiver phoneReceiver;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
final IntentFilter intentFilter = new IntentFilter();
//adding some filters
intentFilter.addAction("android.intent.action.PHONE_STATE");
intentFilter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);
intentFilter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);
this.phoneReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
//update the count and show it in the notification body
//used only to see if the receiver works
String action = intent.getAction();
if (action != null && action.equals("android.intent.action.PHONE_STATE")) {
phoneReceiveCount++;
} else if (action != null && (action.equals(BluetoothDevice.ACTION_ACL_CONNECTED)) || action.equals(BluetoothDevice.ACTION_ACL_DISCONNECTED)) {
btReceiveCount++;
}
createNotification(context);
}
};
registerReceiver(phoneReceiver, intentFilter);
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
String action = intent.getStringExtra(EXTRA_ACTION);
if (action.equals(ACTION_START)) {
createNotification(this);
} else if (action.equals(ACTION_STOP)) {
stopSelf();
}
//also tried with START_STICKY
return START_REDELIVER_INTENT;
}
@Override
public void onDestroy() {
super.onDestroy();
unregisterReceiver(phoneReceiver);
}
private void createNotification(Context context) {
//intent to open app
Intent entryActivityIntent = new Intent(context, MainActivity.class);
entryActivityIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
PendingIntent pendingEntryActivityIntent = PendingIntent.getActivity(context, NOTIFICATION_REQUEST_CODE, entryActivityIntent, PendingIntent.FLAG_UPDATE_CURRENT);
//intent to stop foreground service
Intent stopServiceIntent = new Intent(context, PhoneService.class);
stopServiceIntent.putExtra(PhoneService.EXTRA_ACTION, PhoneService.ACTION_STOP);
stopServiceIntent.addCategory(NOTIFICATION_CATEGORY);
PendingIntent pendingStopForeground = PendingIntent.getService(context, STOP_ID, stopServiceIntent, PendingIntent.FLAG_UPDATE_CURRENT);
//build notification
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
NotificationChannel channel = new NotificationChannel(
CHANNEL_ID,
CHANNEL_NAME,
NotificationManager.IMPORTANCE_LOW);
channel.enableVibration(false);
channel.enableLights(false);
notificationManager.createNotificationChannel(channel);
}
String contentText = "phoneReceiveCount: " + String.valueOf(phoneReceiveCount) + "\nbtReceiveCount: " + String.valueOf(btReceiveCount);
NotificationCompat.Builder notificationBuilder =
new NotificationCompat.Builder(context, CHANNEL_ID)
.setColor(ContextCompat.getColor(context, R.color.colorPrimary))
.setSmallIcon(R.drawable.ic_service_on)
.setContentTitle("This is the title")
.setContentText(contentText)
.addAction(R.drawable.ic_stop, "Stop", pendingStopForeground)
.setStyle(new NotificationCompat.BigTextStyle().bigText(contentText))
.setContentIntent(pendingEntryActivityIntent);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN && Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
notificationBuilder.setPriority(NotificationCompat.PRIORITY_HIGH);
}
startForeground(NOTIFICATION_ID, notificationBuilder.build());
}
}