if (ContextCompat.checkSelfPermission(thisActivity,
            Manifest.permission.CALL_PHONE)
    != PackageManager.PERMISSION_GRANTED) {

    ActivityCompat.requestPermissions(thisActivity,
            new String[]{Manifest.permission.CALL_PHONE},
            MY_PERMISSIONS_REQUEST_CALL_PHONE);

    // MY_PERMISSIONS_REQUEST_CALL_PHONE is an
    // app-defined int constant. The callback method gets the
    // result of the request.
}