iOS 8仅使用UIAlertController或UIActionSheet进行内存泄漏 [英] iOS 8 Only Memory Leak with UIAlertController or UIActionSheet

问题描述

当我使用UIActionSheet或UIAlertController执行以下操作时，我在模拟器中看到iOS 8中的内存泄漏。 UIActionSheet在IOS 8中使用UIAlertController，因此问题是相关的。

I'm seeing a memory leak in iOS 8 in simulator when I do the following with UIActionSheet or UIAlertController. UIActionSheet uses UIAlertController in IOS 8 so the issues are related.

按下按钮时会调用showCameraAction。我已从委托方法中删除了所有内容，但在下面显示的情况下仍然会出现泄漏。我是否以某种方式使用UIActionSheet，我不应该这样做？我将非常感谢您解决此问题的任何帮助。相同的代码没有IOS 7泄漏（在模拟器中）。

showCameraAction gets called when a button is pressed. I've removed all of the content from the delegate method and still get the leak in the case shown below. Am I using UIActionSheet in some way that I shouldn't? I would appreciate any help in resolving this issue. The same code has no leaks with IOS 7 (in the simulator).

-(IBAction)showCameraAction:(id)sender
{

UIActionSheet* actionSheet = [[UIActionSheet alloc] initWithTitle:@"Photo From:"
                                                         delegate:self
                                                cancelButtonTitle:@"Cancel"
                                           destructiveButtonTitle:nil
                                                otherButtonTitles:@"Phone", @"Flickr", nil];

[actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];
//also tried  just showInView: self.view
}

//空

 - (void)actionSheet:(UIActionSheet *)actionSheet
 clickedButtonAtIndex:(NSInteger)buttonIndex {
 }

也尝试使用UIAlertController，结果相同：

Also tried with UIAlertController, with the same result:

UIAlertController *alertController = [UIAlertController
                                      alertControllerWithTitle:@"Photo From:"
                                      message:@""
                                      preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction *phoneAction = [UIAlertAction
                               actionWithTitle:NSLocalizedString(@"Phone", @"Phone action")
                               style:UIAlertActionStyleCancel
                               handler:^(UIAlertAction *action)
                               {
                                   NSLog(@"Phone action");
                               }];

UIAlertAction *flickrAction = [UIAlertAction
                           actionWithTitle:NSLocalizedString(@"Flickr", @"Flickr action")
                           style:UIAlertActionStyleDefault
                           handler:^(UIAlertAction *action)
                           {
                               NSLog(@"Flickr action");
                           }];

[alertController addAction:phoneAction];
[alertController addAction:flickrAction];


[self presentViewController:alertController animated:YES completion:nil];

带有跟踪的屏幕截图： https：// www .dropbox.com / l / FmnTCd0PvVhuu16BVHZo7p

Screenshot with trace: https://www.dropbox.com/l/FmnTCd0PvVhuu16BVHZo7p

推荐答案

我建议在iOS8中使用UIAlertController。
并且在通过UIAlertAction块触发任何事件时，从呈现的控制器中解除alertController对象
。

I would suggest to use "UIAlertController" in iOS8. And dismiss the alertController object from the presented controller, while firing any event by "UIAlertAction" block.

UIAlertController  *alertController = [UIAlertController alertControllerWithTitle:@"title"
message:@"message"
preferredStyle:UIAlertControllerStyleAlert];

UIAlertAction  *alertAction = [UIAlertAction actionWithTitle:@"actionTitle"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *action) {
//Do ur stuff
[alertController dismissViewControllerAnimated:YES
                                    completion:NULL];
}];
[alertController addAction:alertAction];
[self presentViewController:alertController
                       animated:YES
                     completion:NULL];

这篇关于iOS 8仅使用UIAlertController或UIActionSheet进行内存泄漏的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！