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loading view时，后面所有东西屏蔽
2022-06-26 08:10:00 【may_he】
在加载数据时，addSubView:loadingView后，发现后面的按钮还可以按，并且响应事件，进而app crash
解决办法就是：在view的Interaction选项中，选中User Interaction Enabled
或者在代码中加：[loadingView setUserInteractionEnabled:YES];
或: loadingView.userInteractionEnabled=YES;
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