There's now a better way of doing this:
android:minWidth="0dp"android:minHeight="0dp"
You could use a negative margin.
android:layout_marginTop = "-5dp"android:layout_marginRight = "-5dp"
To remove radio button default margins or padding in android
if you using xml
if using programmatically
radiobtn.setMinimumHeight(0); radiobtn.setMinimumWidth(0);