如何将权限传递给 Broadcastreceiver？

Posted 2023-02-19

【中文标题】如何将权限传递给 Broadcastreceiver？

【英文标题】：How to pass permissions to Broadcastreceiver?

【发布时间】：2018-06-17 06:00:30

【问题描述】：

在 MainActivity 中，我的应用获得了ACCESS_FINE_LOCATION 的权限。 然后它设置一个警报

PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 101, intent, 0);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 5000, 5000, pendingIntent);

当 then 接收器被触发时，它没有看到权限被授予：

public class AlarmReceiver extends BroadcastReceiver 

@Override
public void onReceive(Context context, Intent intent) 

    LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
    Location location;
    if (context.checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) 
        Toast.makeText(context, "Granted", Toast.LENGTH_SHORT).show();
        location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
    else
        Toast.makeText(context, "Not Granted!", Toast.LENGTH_SHORT).show();
        return;
    

我不希望应用再次向用户请求许可，我该如何实现？

提前感谢您的努力。

【参考方案1】：

if(context.checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)

这行表示权限不是granted。你写错了condition，需要征求许可。你的情况应该是这样的

if (context.checkSelfPermission(Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) 
        Toast.makeText(context, "Not Granted!", Toast.LENGTH_SHORT).show();
        return;
    else

        Toast.makeText(context, "Granted", Toast.LENGTH_SHORT).show();
        location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);