RadioButton解决文字和drawableleft和文字一起时不居中

/**
 * 解决文字和drawableleft和文字一起时不居中。要设置  android:background="@null"android:button="@null"
 * @author zhousheng
 *
 */
public class MDMRadioButton extends RadioButton {

	public MDMRadioButton(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
		// TODO Auto-generated constructor stub
	}

	public MDMRadioButton(Context context, AttributeSet attrs) {
		super(context, attrs);
		// TODO Auto-generated constructor stub
	}

	public MDMRadioButton(Context context) {
		super(context);
		// TODO Auto-generated constructor stub
	}

	@Override
	protected void onDraw(Canvas canvas) {
		//获取设置的图片
		Drawable[] drawables = getCompoundDrawables();
		if (drawables != null) {
			//第一个是left
			Drawable drawableLeft = drawables[0];
			if (drawableLeft != null) {
				//获取文字的宽度
				float textWidth = getPaint().measureText(getText().toString());
				int drawablePadding = getCompoundDrawablePadding();
				int drawableWidth = 0;
				drawableWidth = drawableLeft.getIntrinsicWidth();
				float bodyWidth = textWidth + drawableWidth + drawablePadding;
				int y = getWidth();
				canvas.translate((getWidth() - bodyWidth) / 2, 0);
			}
		}
		super.onDraw(canvas);
	}
}

使用：

<com.maidoumi.merchant.widget.MDMRadioButton

android:id="@+id/rb_main_table"

style="@style/main_radiobtn_style"

android:checked="true"

android:drawableLeft="@drawable/ic_back"

android:text="@string/main_table" />