RadioButton图片文字居中显示

开发中需要实现以下效果，直接自定义控件比较方便，代码如下：

public class DrawableCenterRadioButton extends RadioButton {
    public DrawableCenterRadioButton(Context context) {
        super(context);
    }

    public DrawableCenterRadioButton(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public DrawableCenterRadioButton(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        Drawable[] drawables = getCompoundDrawables();
        if (drawables != null) {
            Drawable drawableLeft = drawables[0];
            if (drawableLeft != null) {
                float textWidth = getPaint().measureText(getText().toString());
                int drawablePadding = getCompoundDrawablePadding();
                int drawableWidth = 0;
                drawableWidth = drawableLeft.getIntrinsicWidth();
                float bodyWidth = textWidth + drawableWidth + drawablePadding;
                canvas.translate((getWidth() - bodyWidth) / 2, 0);
            }
        }
        super.onDraw(canvas);
    }
}

使用方法：

<DrawableCenterRadioButton
    android:id="@+id/rb_boy"
    android:drawableLeft="@drawable/boy"
    android:checked="true"
    android:text="男"
    style="@style/rgb_sex" />

<style name="rgb_sex">
    <item name="android:layout_width">0dp</item>
    <item name="android:layout_height">fill_parent</item>
    <item name="android:layout_weight">1</item>
    <item name="android:button">@null</item>
    <item name="android:drawablePadding">5dp</item>
    <item name="android:background">@drawable/rbg_boy_girl_bkg</item>
    <item name="android:textColor">@drawable/rbg_boy_girl</item>
    <item name="android:textSize">@dimen/text_choice_title</item>
</style>