Wednesday, March 5, 2014

[android-developers] why checkCallingPermission() always returns -1 ?

Hi,
I created a service whose handleMessage() is triggered by a remote activity. works fine...

then, wanted to add a check that the remote activity has the required permission so added a call for checkCallingPermission("android.permission.INTERNET"); and added <uses-permission android:name="android.permission.INTERNET"/>  to the remote activity.

still, at the service side, checkCallingPermission() always returns -1
see code from service below.

any idea?

thanks!


    class IncomingHandler extends Handler {
        @Override
        public void handleMessage(Message msg) {           
            String dataString = msg.getData().getString("MyString");
            dataString += isCallingClientHasPermissions()? "\nAuthorized" : "\nNot authorized";
            Toast.makeText(getApplicationContext(), dataString, Toast.LENGTH_LONG).show();
        }
     }
   
   
    private boolean isCallingClientHasPermissions(){
        int ret = getApplicationContext().checkCallingPermission("android.permission.INTERNET"); //always returns -1 :-<
        boolean authorized = ret == PackageManager.PERMISSION_GRANTED; //always false :-<
        return authorized;
    }

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