自定义控件让TextView的drawableLeft与文本一起居中显示

/**
* drawableLeft与文本一起居中显示
*
*
*/
public class DrawableCenterTextView extends TextView {

public DrawableCenterTextView(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
}

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

public DrawableCenterTextView(Context context) {
super(context);
}

@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);
}
}