UIAlertController和UIActivityViewController在ipad中的兼容性问题

最新推荐文章于 2024-06-02 10:24:46 发布

原创最新推荐文章于 2024-06-02 10:24:46 发布 · 1.7k 阅读

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本文详细介绍了在iPad上使用UIAlertController和UIActivityViewController时遇到的兼容性问题及解决方案。当在iPad环境中呈现这些控制器时，由于缺少瞄点配置而引发应用崩溃。文中提供了具体的代码示例，展示了如何为UIAlertController和UIActivityViewController设置正确的popoverPresentationController属性，以确保在iPad上的正确显示。

今天业务侧说是让sdk在ipad中也可以运行。但是会必先crash。经过定位发现是因为UIAlertController和UIActivityViewController在ipad上存在兼容性。
UIAlertController报的错误如下所示：

Terminating app due to uncaught exception 'NSGenericException', reason: 'Your application has presented a UIAlertController (<UIAlertController: 0x1048f5600>) of style UIAlertControllerStyleActionSheet from

UIActivityViewController报的错误如下所示：

Terminating app due to uncaught exception 'NSGenericException', reason: 'Your application has presented a UIActivityViewController (<UIActivityViewController: 0x103840000>). In its current trait environment, the modalPresentationStyle of a UIActivityViewController with this style is UIModalPresentationPopover.

这两个crash原因都是因为在ipad上进行UIAlertController和UIActivityViewController的使用的时候，都需要瞄点。修复如下所示：
对于UIAlertController

 //兼容ipad
if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad){
    alert.popoverPresentationController.sourceView = sourceView;
    alert.popoverPresentationController.sourceRect = sourceView.bounds;
    alert.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp ;
}

对于UIActivityViewController

//兼容ipad
if([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad){
   vc.popoverPresentationController.sourceView = self.view;
   vc.popoverPresentationController.sourceRect = CGRectMake(self.view.frame.size.width/2.0, self.view.frame.size.height/2.0, 1.0, 1.0);
   vc.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp ;
}