Utility method to perform a runtime check that an app has been granted a permission.

checkHasPermission.java

public static void checkHasPermission(Context contxt, String permissionName) {
    String packageName = context.getPackageName();
    PackageManager packageManager = context.getPackageManager();
    int permissionStatus = packageManager.checkPermission(permissionName, packageName);
    if (permissionStatus != PackageManager.PERMISSION_GRANTED) {
        throw new SecurityException("Application requires <uses-permission android:name=\"" + permissionName + "\" />");
    }
}