我改变了以下方法
public static boolean requestForLocationPermission(Fragment fragment) {
String LOCATION_PERMISSION = Manifest.permission.ACCESS_FINE_LOCATION;
if (ContextCompat.checkSelfPermission(fragment.requireContext(), LOCATION_PERMISSION)
== PackageManager.PERMISSION_GRANTED)
return true;
if (ActivityCompat.shouldShowRequestPermissionRationale(fragment.requireActivity(), LOCATION_PERMISSION)) {
PermissionDialog.showForResult(fragment, LOCATION_PERMISSION_REQUEST_CODE, LOCATION_PERMISSION);
} else {
fragment.requestPermissions(new String[]{LOCATION_PERMISSION}, LOCATION_PERMISSION_REQUEST_CODE);
}
return false;
}字符串
在我发现自动位置检测在API 21上不起作用之后，主要是因为fragment.requestPermissions被弃用：
public static boolean requestForLocationPermission(Fragment fragment) {
String LOCATION_PERMISSION = Manifest.permission.ACCESS_FINE_LOCATION;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (ContextCompat.checkSelfPermission(fragment.requireContext(), LOCATION_PERMISSION)
== PackageManager.PERMISSION_GRANTED) {
Log.d("request_Permission 23:", "has been granted!");
return true;
}
} else {
if (PermissionChecker.checkSelfPermission(fragment.requireContext(), LOCATION_PERMISSION)
== PermissionChecker.PERMISSION_GRANTED) {
Log.d("request_Permission 21:", "has been granted!");
return true;
}
}
if (ActivityCompat.shouldShowRequestPermissionRationale(fragment.requireActivity(), LOCATION_PERMISSION)) {
PermissionDialog.showForResult(fragment, LOCATION_PERMISSION_REQUEST_CODE, LOCATION_PERMISSION);
} else {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
fragment.requireActivity().requestPermissions(new String[]{LOCATION_PERMISSION}, LOCATION_PERMISSION_REQUEST_CODE);
} else {
ActivityCompat.requestPermissions(fragment.requireActivity(),
new String[]{LOCATION_PERMISSION},
LOCATION_PERMISSION_REQUEST_CODE);
Log.d("request_Permission:", "has been requested ... ");
}
}
return false;
}型
添加这些Log行之后，对于logcat中的API 21来说，当权限对话框出现在屏幕上时，它显示的是request_Permission 21: has been granted!，而没有任何选项选择。
那么，为什么PermissionChecker.checkSelfPermission(fragment.requireContext(), LOCATION_PERMISSION) == PermissionChecker.PERMISSION_GRANTED对于API 21总是为真（可能对于API 22也是）？
1条答案
按热度按时间bvn4nwqk1#
运行时权限是在Android 6.0（API级别23）中随着Android Marshmallow的发布而引入的。在Android 6.0之前，权限是在安装时授予的，用户无法控制各个权限。
从Android 6.0开始，用户可以在运行时授予或拒绝个人权限，从而使他们能够更好地控制自己的隐私，并允许开发人员在应用实际需要时请求权限。