PermissionChecker

public final class PermissionChecker
extends Object

java.lang.Object
   ↳ androidx.core.content.PermissionChecker


This class provides permission check APIs that verify both the permission and the associated app op for this permission if such is defined.

In the new permission model permissions with protection level dangerous are runtime permissions. For apps targeting Build.VERSION_CODES.M and above the user may not grant such permissions or revoke them at any time. For apps targeting API lower than Build.VERSION_CODES.M these permissions are always granted as such apps do not expect permission revocations and would crash. Therefore, when the user disables a permission for a legacy app in the UI the platform disables the APIs guarded by this permission making them a no-op which is doing nothing or returning an empty result or default error.

It is important that when you perform an operation on behalf of another app you use these APIs to check for permissions as the app may be a legacy app that does not participate in the new permission model for which the user had disabled the "permission" which is achieved by disallowing the corresponding app op.

Summary

Constants

int PERMISSION_DENIED

Permission result: The permission is denied.

int PERMISSION_DENIED_APP_OP

Permission result: The permission is denied because the app op is not allowed.

int PERMISSION_GRANTED

Permission result: The permission is granted.

Public methods

static int checkCallingOrSelfPermission(Context context, String permission)

Checks whether the IPC you are handling or your app has a given permission and whether the app op that corresponds to this permission is allowed.

static int checkCallingPermission(Context context, String permission, String packageName)

Checks whether the IPC you are handling has a given permission and whether the app op that corresponds to this permission is allowed.

static int checkPermission(Context context, String permission, int pid, int uid, String packageName)

Checks whether a given package in a UID and PID has a given permission and whether the app op that corresponds to this permission is allowed.

static int checkSelfPermission(Context context, String permission)

Checks whether your app has a given permission and whether the app op that corresponds to this permission is allowed.

Inherited methods