The point of the request code is that you can distinguish between different permission requests in the onRequestPermissionsResult handler.

What are dangerous permissions in Android?

Dangerous permissions are permissions which could potentially affect the user’s privacy or the device’s operation. The user must explicitly agree to grant those permissions. These include accessing the camera, contacts, location, microphone, sensors, SMS, and storage.

How do I check if permission is granted Android?

To check if the user has already granted your app a particular permission, pass that permission into the ContextCompat. checkSelfPermission() method. This method returns either PERMISSION_GRANTED or PERMISSION_DENIED , depending on whether your app has the permission.