ios – 由于未捕获的异常UIViewControllerHierarchyInconsistency终止应用程序,

我在两个按钮上创建了一个工具栏,并在ios7上运行,当我在ios8崩溃时运行：

这是在ios7中静默工作的代码片段：

expiredPromoTextField.inputView = DatePicker;
 expiredPromoTextField.delegate = self;
 quantityPromoTextField.inputView = quantityPicker;
 quantityPromoTextField.delegate = self;


 // Create button to close the UIPickerView
 UIToolbar * mypickerToolbar = [[UIToolbar alloc] initWithFrame: CGRectMake (0,320,56)];
 mypickerToolbar.barStyle = UIBarStyleBlackTranslucent;
 [mypickerToolbar sizeToFit];
 NSMutableArray * barItems = [[NSMutableArray alloc] init];
 UIBarButtonItem * CancelBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemCancel target: self action:SELEctor (cancelDoneClicked)];
 [barItems addObject: CancelBtn];
 UIBarButtonItem * FLEXspace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemFlexibleSpace target: self action: nil];
 [barItems addObject: FLEXspace];
 UIBarButtonItem * doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem: UIBarButtonSystemItemDone target: self action:SELEctor (pickerDoneClicked :)];
 [barItems addObject: doneBtn];
 [mypickerToolbar setItems: barItems animated: YES];
 [quantityPicker setShowsSelectionInDicator: YES];

 expiredPromoTextField.inputAccessoryView = mypickerToolbar;
 quantityPromoTextField.inputAccessoryView = mypickerToolbar;

你知道我的意思是inputAccessoryView会崩溃的应用程序,我也问苹果的工程师,他们告诉我,这是测试版的一个问题,但现在与GM继续给同样的问题.

我该怎么办？

UITextField* someTF;
View* customView;
UIViewController *mainVc;

[mainVC.view addSubview:customView];
someTF.inputView = customView;

UITextField* someTF;
View* customView;
UIViewController *mainVc;

//  [mainVC.view addSubview:customView];  <-- delete this line
someTF.inputView = customView;