向Android M服务请求位置权限 [英] Request Location Permissions from a service Android M

问题描述

我使用的服务在启动时会启动，并开始检查位置更新.现在，由于使用Android M，我拒绝了权限弹出窗口上的位置访问功能，一旦手机启动，我的服务就会崩溃.

I am using a service that on boot starts up and begins to check for location updates. Once i deny location access on permission popup now thanks to Android M my service crashes once the phone boots up.

由于在这种情况下我没有任何活动，因此对requestPermissions()的调用返回了ClassCastException，因为我的服务Context无法转换为活动.

Since i have no activity in this case the call to requestPermissions() returns a ClassCastException as my service Context cannot be cast to an activity.

我的方法调用:

ActivityCompat.requestPermissions((Activity) mContext, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, REQUEST_COARSE_LOCATION);

到目前为止，是否有任何解决方案?还是我必须撤销服务权利以不在这种状态下运行.

Is there any solution so far to this OR do I have to revoke the service rights to NOT run in such a state.

推荐答案

您无法通过服务请求权限，因为服务未绑定到UI，所以这种做法很有意义.由于服务上下文不是活动，因此您得到的异常是有道理的.

You can not request permission via a service, since a service is not tied to a UI, this kind of makes sense. Since a service context is not an activity the exception you are getting makes sense.

您可以检查权限是否在服务中可用，并在活动中请求该权限(是的，需要活动).

You can check if the permission is available in a service and request the permission in an activity (yes you need an activity).

在服务中:

 public static boolean checkPermission(final Context context) {
return ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
        && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED;
 }

和活动中:

private void showPermissionDialog() {
    if (!LocationController.checkPermission(this)) {
        ActivityCompat.requestPermissions(
            this,
            new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION},
            PERMISSION_LOCATION_REQUEST_CODE);
    }
}

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