怎么办“actionSheet showFromRect”在iOS 8中？ [英] How to do "actionSheet showFromRect" in iOS 8?

问题描述

在iOS 7中，我通过showFromRect显示actionSheet：

In iOS 7, I show actionSheet by "showFromRect":

[actionSheet showFromRect:rect inView:view animated:YES];

但在iOS 8中，这不起作用。他们替换实现并建议我们使用UIAlertController。然后我如何像弹出窗口一样显示这个actionSheet？

But in iOS 8, this doesn't work. They they replace the implementation and suggest us using UIAlertController. Then how do I show this actionSheet like a popover?

推荐答案

使用UIAlertController你可以访问popoverPresentationController属性来设置sourceView（aka inView）和sourceRect（又名fromRect）。这给出了与之前的showFromRect相同的外观：inView：

Using UIAlertController you can access the popoverPresentationController property to set the sourceView (aka inView) and sourceRect (aka fromRect). This gives the same appearance as the previous showFromRect:inView:

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Title" message:@"message" preferredStyle:UIAlertControllerStyleActionSheet];

// Set the sourceView.
alert.popoverPresentationController.sourceView = self.mySubView;

// Set the sourceRect.
alert.popoverPresentationController.sourceRect = CGRectMake(50, 50, 10, 10);

// Create and add an Action.
UIAlertAction *anAction = [UIAlertAction actionWithTitle:@"Action Title" style:UIAlertActionStyleDefault handler:^(UIAlertAction * action) {
NSLog(@"Action Pressed");
}];

[alert addAction:anAction];

// Show the Alert.
[self presentViewController:alert animated:YES completion:nil];

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