@Override
    public Uri insert(Uri uri, ContentValues values) {
        throw new UnsupportedOperationException("No external inserts");
    }
By default, this method throws an {@link UnsupportedOperationException}. You must
subclass FileProvider if you want to provide different functionality.
replugin-sample/plugin/plugin-demo1/app/src/main/java/com/qihoo360/replugin/sample/demo1/provider/FileProvider.java