UIAlertController不居中正確

Question

我使用以下代碼來顯示UIAlertController上的toolBarButtonItem，使用該代碼所示

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleActionSheet]; 

    [alertController addAction:[UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) { 
    }]];  

    [alertController addAction:[UIAlertAction actionWithTitle:@"Delete Selected Accounts" style:UIAlertActionStyleDestructive handler:^(UIAlertAction *action) { 
     [Utility showAlertWithTitle:nil message:DELETE_ACCOUNT delegate:self tag:1 buttons:@[@"Cancel", @"Delete"]]; 
    }]]; 
    alertController.popoverPresentationController.barButtonItem = self.moreButtonItem; 
    [self presentViewController:alertController animated:YES completion:nil]; 

的alertController出現右雙面不居中。我希望alertController恰好位於toolBarButtonItem的中心位置。

Answer 1

嘗試添加以下代碼

alertController.popoverPresentationController.sourceView = senderView; //your view 
alertController.popoverPresentationController.sourceRect = senderView.bounds; //your view 
alertController.popoverPresentationController.permittedArrowDirections = UIPopoverArrowDirectionAny; 

這個固定我的問題。