在框架外清除图纸
[英]Clear drawings outside of frame
问题描述
I have an UIView which is drawn on screen with frame (0, 0, 60, 60). 
我有一个UIView ，它在屏幕上以帧（ UIView ）绘制。 All I want is if I change frame to (0, 0, 30, 30) I want the view to be drawn only in it's bounds. 我想要的就是如果将frame更改为（0，0，30，30）我希望仅在边界范围内绘制视图。 How can I clear this frame overlap? 如何清除此框重叠？ I tried - setNeedsDisplay on this view but it seems it redraws only new frame and overlap remains. 我尝试过- setNeedsDisplay在此视图上使用- setNeedsDisplay ，但似乎它仅重绘新帧，并且仍然存在重叠。
1 个解决方案
解决方案1
0 已采纳 2011-12-09 12:10:22
I am not entirely sure if I got your question right but it sounds like a bounds-clipping issue. 我不确定我是否正确回答了您的问题，但这听起来像是一个限制问题。
You may want to experiment with the UIView property clipsToBounds on the parent (super-) view. 您可能要尝试在父（超级）视图上使用UIView属性clipsToBounds 。
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