UIDatePicker NSRangeException崩溃iOS 11

我有以下代码将DatePicker添加到我的一个UIViews。

UIDatePicker *datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 30, 320, 250)]; [datePicker setDatePickerMode:UIDatePickerModeDate]; datePicker.hidden = NO; datePicker.date = [NSDate date]; [datePicker addTarget:self action:@selector(changeDateInLabel:) forControlEvents:UIControlEventValueChanged]; [self.dateView addSubview:datePicker]; 

这段代码已经存在了一段时间，但我们现在已经注意到了一些随机崩溃。 崩溃只发生在iOS 11中。这就是崩溃的堆栈跟踪的样子

 Fatal Exception: NSRangeException *** -[__NSArrayM objectAtIndex:]: index 9223372036854775807 beyond bounds [0 .. 1] Fatal Exception: NSRangeException 0 CoreFoundation 0x180d87d38 __exceptionPreprocess 1 libobjc.A.dylib 0x18029c528 objc_exception_throw 2 CoreFoundation 0x180d20c44 _CFArgv 3 CoreFoundation 0x180c50cc0 -[__NSArrayM removeObjectAtIndex:] 4 UIKit 0x18a3ecaa8 -[UIPickerView selectedRowInComponent:] 5 UIKit 0x18ac52224 -[_UIDatePickerMode_Date _dateForYearRow:] 6 UIKit 0x18ac4edd8 -[_UIDatePickerMode dateForRow:inCalendarUnit:] 7 UIKit 0x18ac4fa70 -[_UIDatePickerMode _updateSelectedDateComponentsWithNewValueInComponent:usingSelectionBarValue:] 8 UIKit 0x18ac4fd18 -[_UIDatePickerMode selectedDateComponents] 9 UIKit 0x18ac43370 -[_UIDatePickerView _updatedLastSelectedComponentsByValidatingSelectedDateWithLastManipulatedComponent:] 10 UIKit 0x18ac427e8 -[_UIDatePickerView _setDate:animated:forced:] 11 UIKit 0x18ac42d24 -[_UIDatePickerView _setMode:] 12 UIKit 0x18ac42e40 -[_UIDatePickerView setDatePickerMode:] 

关于什么会导致这次崩溃的任何指针？ 谢谢

Answer 1

请遵循此代码。它可以帮助您。

 UIDatePicker *datePicker=[[UIDatePicker alloc]init]; datePicker.datePickerMode=UIDatePickerModeDate; [self.dateSelectionTextField setInputView:datePicker]; UIToolbar *toolBar=[[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 44)]; [toolBar setTintColor:[UIColor grayColor]]; UIBarButtonItem *doneBtn=[[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleBordered target:self action:@selector(ShowSelectedDate)]; UIBarButtonItem *space=[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; [toolBar setItems:[NSArray arrayWithObjects:space,doneBtn, nil]]; [self.dateSelectionTextField setInputAccessoryView:toolBar];. -(void)ShowSelectedDate { NSDateFormatter *formatter=[[NSDateFormatter alloc]init]; [formatter setDateFormat:@"dd/MMM/YYYY hh:min a"]; self.dateSelectionTextField.text=[NSString stringWithFormat:@"%@",[formatter stringFromDate:datePicker.date]]; [self.dateSelectionTextField resignFirstResponder]; }