UIAlertController弹出框在ipad的时候闪退

曾经终败给现在 2024-05-03 14:47 7阅读 0赞

reason: 'Your application has presented a UIAlertController (<UIAlertController: 0x124638680>) of style UIAlertControllerStyleActionSheet. The modalPresentationStyle of a UIAlertController with this style is UIModalPresentationPopover. You must provide location information for this popover through the alert controller's popoverPresentationController. You must provide either a sourceView and sourceRect or a barButtonItem. If this information is not known when you present the alert controller, you may provide it in the UIPopoverPresentationControllerDelegate method -prepareForPopoverPresentation.'

修改前：

UIAlertController \*actionSheet = \[UIAlertController alertControllerWithTitle:@"提示" message:@"确定要退出吗？" preferredStyle:UIAlertControllerStyleAlert\];  
UIAlertAction \*cancelACtion = \[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction \* \_Nonnull action) \{  
NSLog(@"取消点击了！");  
\}\];  
UIAlertAction \*sureAction = \[UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction \* \_Nonnull action) \{  
NSLog(@"确定点击了！");  
\}\];  
\[actionSheet addAction:cancelACtion\];  
\[actionSheet addAction:sureAction\];  
\[self presentViewController:actionSheet animated:YES completion:nil\];

================================================

修改后：

UIPopoverPresentationController \*popver = alertController.popoverPresentationController;

if(popver)\{

popver.sourceView = \_imgutton;

popver.sourceRect = \_imgutton.bounds;

popver.permittedArrowDirections = UIPopoverArrowDirectionAny;

\[self presentViewController:actionSheet animated:YES completion:nil\];

\_imgutton是出发这个弹出按钮的btn。

参考阅读：https://www.jianshu.com/p/d1b07669c6c6