ListView中的Recycled View中的额外空间

时间:2012-09-29 22:55:14

标签: android android-layout android-view

我有ListView根据VerticalTextView code here(第二个例子)使文字垂直。我认为它工作正常,但后来我开始滚动并注意到出现了这些大的差距。我相信这是因为ListView的回收视图,但我不确定如何修复它。我的理论是它使用较旧的视图并更新文本,但不更新整个视图的大小。有什么想法吗?

在左侧,您可以看到装入物品时的初始视图,看起来不错!但是如果我向下滚动一堆并备份,就会发生这种情况。

Initial View - Looks good! 2nd View - Looks bad!

在此处发布VerticalTextView代码以便于了解

public class VerticalTextView extends TextView{
   final boolean topDown;

   public VerticalTextView(Context context, AttributeSet attrs){
      super(context, attrs);
      final int gravity = getGravity();
      if(Gravity.isVertical(gravity) && (gravity&Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
         setGravity((gravity&Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
         topDown = false;
      }else
         topDown = true;
   }

   @Override
   protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
      super.onMeasure(heightMeasureSpec, widthMeasureSpec);
      setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
   }

   @Override
   protected void onDraw(Canvas canvas){
      TextPaint textPaint = getPaint(); 
      textPaint.setColor(getCurrentTextColor());
      textPaint.drawableState = getDrawableState();

      canvas.save();

      if(topDown){
         canvas.translate(getWidth(), 0);
         canvas.rotate(90);
      }else {
         canvas.translate(0, getHeight());
         canvas.rotate(-90);
      }


      canvas.translate(getCompoundPaddingLeft(), getExtendedPaddingTop());

      getLayout().draw(canvas);
      canvas.restore();
  }
}

编辑:看起来与MATCH_PARENT选项有关。如果我将其更改为WRAP_CONTENT则没问题。

0 个答案:

没有答案