Android layout compatible Radiogroup in RadioButton not centered

In a different version of the test, found in the lower version of the RadioButton is not centered , you can find that in the 14 version, the first RadioButton will obviously offset a little distance to the right.

But switching to version 19 or 21, he is normal, careful observation, obviously different.

Solution Set android:background= "@android: color/transparent" or android:paddingleft= "0DP" in RadioButton

        <RadioButton             android:layout_width= "0DP"              android:layout_height= "Wrap_content"              android:layout_weight= "1"              android:background= "@android: Color/transparent"              android:button= "@null"              android:drawabletop= "@drawable/bar_icon_game_selector"              android:gravity= "Center"              android:paddingleft= "0DP"              android:text= "@string/more" &nbSp;           android:textsize= "10DP"  /> 

Thank Http://www.tuicool.com/articles/U7NJna.

Android layout compatible Radiogroup in RadioButton not centered