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);
     }
 }