ios8测试版中UIActionSheet崩溃

Question

我有代码，简单地显示按钮点击上的UIActionSheet。但是当我在iPad上使用XCode5.1 + ios8测试版时，它会崩溃。

是我用来显示UIActionSheet的代码。

UIActionSheet *tmpActionSheet = [[UIActionSheet alloc] initWithTitle:nil
                                                                delegate:self
                                                       cancelButtonTitle:@"Cancel"
                                                  destructiveButtonTitle:nil
                                                       otherButtonTitles:
                                     @"Ok",
                                     nil];
    [tmpActionSheet showInView:self.view];

注意:
-它完美地工作与XCode6beta + iOS8beta (iPhone/iPad都)
-与XCode5.1 + iOS8beta(仅限iPhone)完美配合

异常发生时的日志如下:

2014-06-23 15:54:04.860 ActionSheetDemo[680:191598] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSLayoutConstraint:0x14e60ef0 V:|-(0)-[UIView:0x14d419a0]   (Names: '|':UIView:0x14d3a8b0 )>",
    "<NSLayoutConstraint:0x14e60880 _UIDimmingKnockoutBackdropView:0x14d2ca80.top == UIView:0x14d419a0.top>",
    "<NSLayoutConstraint:0x14e61600 V:[_UIDimmingKnockoutBackdropView:0x14d2ca80(>=44)]>",
    "<NSLayoutConstraint:0x14e66240 _UIDimmingKnockoutBackdropView:0x14d2ca80.bottom ==>"
)
Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14e66240 _UIDimmingKnockoutBackdropView:0x14d2ca80.bottom ==>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2014-06-23 15:54:04.872 ActionSheetDemo[680:191598] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSLayoutConstraint:0x14e60ef0 V:|-(0)-[UIView:0x14d419a0]   (Names: '|':UIView:0x14d3a8b0 )>",
    "<NSLayoutConstraint:0x14e60880 _UIDimmingKnockoutBackdropView:0x14d2ca80.top == UIView:0x14d419a0.top>",
    "<NSLayoutConstraint:0x14e61600 V:[_UIDimmingKnockoutBackdropView:0x14d2ca80(>=44)]>",
    "<NSLayoutConstraint:0x14d25f80 _UIDimmingKnockoutBackdropView:0x14d2ca80.bottom ==>"
)
Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14d25f80 _UIDimmingKnockoutBackdropView:0x14d2ca80.bottom ==>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2014-06-23 15:54:04.878 ActionSheetDemo[680:191598] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSLayoutConstraint:0x14e60ef0 V:|-(0)-[UIView:0x14d419a0]   (Names: '|':UIView:0x14d3a8b0 )>",
    "<NSLayoutConstraint:0x14e60880 _UIDimmingKnockoutBackdropView:0x14d2ca80.top == UIView:0x14d419a0.top>",
    "<NSLayoutConstraint:0x14e61600 V:[_UIDimmingKnockoutBackdropView:0x14d2ca80(>=44)]>",
    "<NSLayoutConstraint:0x14e67740 _UIDimmingKnockoutBackdropView:0x14d2ca80.bottom ==>"
)
Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14e67740 _UIDimmingKnockoutBackdropView:0x14d2ca80.bottom ==>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2014-06-23 15:54:04.885 ActionSheetDemo[680:191598] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSLayoutConstraint:0x14e60ef0 V:|-(0)-[UIView:0x14d419a0]   (Names: '|':UIView:0x14d3a8b0 )>",
    "<NSLayoutConstraint:0x14e60880 _UIDimmingKnockoutBackdropView:0x14d2ca80.top == UIView:0x14d419a0.top>",
    "<NSLayoutConstraint:0x14e61600 V:[_UIDimmingKnockoutBackdropView:0x14d2ca80(>=44)]>",
    "<NSLayoutConstraint:0x14d38a30 _UIDimmingKnockoutBackdropView:0x14d2ca80.bottom ==>"
)
Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x14d38a30 _UIDimmingKnockoutBackdropView:0x14d2ca80.bottom ==>
Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2014-06-23 15:54:04.892 ActionSheetDemo[680:191598] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Application tried to present modally an active controller <_UIAlertShimPresentingViewController: 0x14d450c0>.'
*** First throw call stack:
(0x24702c2f 0x315cdd1f 0x27ffa6e7 0x27df9799 0x2838f3bd 0x2838e94d 0x6bfdd 0x27d4a6c7 0x27d4a669 0x27d34a4d 0x27d4a099 0x27d49d73 0x27d42ff1 0x27d198b1 0x27f8f13d 0x27d183c1 0x246ca597 0x246c99ab 0x246c8029 0x246145a1 0x246143b3 0x2b8cc1b9 0x27d78c41 0x6c239 0x31b67aaf)
libc++abi.dylib: terminating with uncaught exception of type NSException

---

问题:
为什么我的程序崩溃了?
是ios8测试版的bug吗?

---

补丁直到apple修复此问题
为UIActionSheet类创建Objective-C categor

代码:

#define SYSTEM_VERSION_EQUAL_TO(v)                  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)
#define SYSTEM_VERSION_GREATER_THAN(v)              ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v)                 ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v)     ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)
@implementation UIActionSheet (simplyShowInViewAddition)
- (void) simplyShowInView:(UIView *) view
{
    if(SYSTEM_VERSION_LESS_THAN(@"8.0"))
    {
        [self showInView:view];
    }
    else
    {
        // "Translating" UIActionSheet to UIAlertController for better compatibility with iOS 8
        UIAlertController *alert = [UIAlertController alertControllerWithTitle:nil message:self.title preferredStyle:UIAlertControllerStyleActionSheet];
        int nactions = [self numberOfButtons];
        int i=0;
        while(i<nactions)
        {
            NSString *button_title=[self buttonTitleAtIndex:i];
            UIAlertActionStyle style=UIAlertActionStyleDefault;
            if(i==[self cancelButtonIndex])
            {
                style = UIAlertActionStyleCancel;
            }
            else if(i==[self destructiveButtonIndex])
            {
                style = UIAlertActionStyleDestructive;
            }
            UIAlertAction *newAction = [UIAlertAction actionWithTitle:button_title style:style handler:^(UIAlertAction *action) {
                NSLog(@"clicked action %d",i);
                [self.delegate actionSheet:self clickedButtonAtIndex:i];
            }];
            [alert addAction:newAction];
            i++;
        }
        if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
        {
            [alert setModalPresentationStyle:UIModalPresentationPopover];
            UIPopoverPresentationController *popPresenter = [alert
                                                             popoverPresentationController];
            popPresenter.sourceView = view;
            popPresenter.sourceRect = CGRectMake(view.frame.size.width/2-1, 0.45*view.frame.size.height, 2, 1);
            popPresenter.permittedArrowDirections = 0;
        }
        UIViewController *sourceViewController;
        if(self.delegate!=nil && [self.delegate respondsToSelector:@selector(presentViewController:animated:completion:)])
        {
            NSLog(@"presenting UIAlertController on source view controller");
            sourceViewController=(UIViewController *)(self.delegate);
        }
        else
        {
            // When the actionsheet delegate is not a UIViewController
            NSLog(@"presenting UIAlertController on displayed view controller");
            sourceViewController = /* Set up a method here to obtain the view controller where you want to display it */
        }
        [sourceViewController presentViewController:alert animated:YES completion:nil];
    }
}

参考链接

Answer 1

我也有同样的问题。我使用ShowFromBarButtonItem函数代替showwinview函数。

[organizeActionSheet showFromBarButtonItem:btnAction animated:NO];

如果使用ShowFromRect或showFromBarButtonItem运行时异常将不会出现。我认为这是一个错误的IOS8测试版，当我使用ShowInView运行时异常即将到来。

当使用Xcode 5.1构建时，我确实在调试窗口中得到一些警告消息，但动作表确实出现了。在iOS 8 beta 4中，它以一个小弹出窗口的形式出现在视图的外部(在侧面)，而在iOS 7中，它以从视图底部向上滑动的按钮的形式出现。

Answer 2

我也有同样的问题，这在beta 5中仍然是'破碎'。在我的情况下，虽然我只是得到一个暗淡的屏幕没有动作表，而不是崩溃。

除了在iPad的视图中直接显示动作表单不是一个好的设计。你应该使用包含动作表单的弹出窗口，并像Sabareesh建议的那样指向产生选择的按钮或UI元素。警报是用于与任何UI元素断开连接的消息，据我所知，动作表总是与屏幕上的UI元素相关联。

Answer 3

我在IOS 8 Beta 2到Beta 5期间看到了同样的问题。我刚刚提交了bug报告:17971746.

Answer 4

我在iPad上运行iOS8 final也会出现崩溃

这是我简单的解决方法:
替换
[actionSheet showFromBarButtonItem:myButton animated:YES];
通过
[actionSheet showFromRect:myButton.navBarView.frame inView:self.view animated:YES];

Answer 5

根据此https://developer.apple.com/library/ios/documentation/Uikit/reference/UIActionSheet_Class/index.html答案来自这里:如何做"actionSheet showFromRect"在iOS 8中?