android radiobutton text position

<RadioButton
            android:id="@+id/value1"
            style="?android:attr/textAppearanceMedium"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:button="@null"
            android:drawableTop="@android:drawable/btn_radio"
            android:gravity="center"
            android:orientation="vertical"
            android:text="1" />

                <RadioButton
                    android:id="@+id/value_good"
                    style="?android:attr/textAppearanceMedium"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:button="@null"
                    android:drawableTop="@android:drawable/btn_radio"
                    android:gravity="center"
                    android:orientation="vertical"
                    android:text="@string/value_good" />