我有一个UITextView in a UIView。当 viewLoad 时，我有一个UIPickerView在一个UIAlertView with "OK"按钮。当我从选择器中选择任何值时单击“确定”我需要做UITextView 活动.
为此我写了[<myTextView> becomeFirstResponder];的委托方法UITextView。一旦这个方法执行它就会textViewShouldBeginEditing要调用的委托方法。这个方法执行正确，我在这里返回 TRUE，但之后执行返回到该行[<myTextView> becomeFirstResponder];然后应用程序崩溃了。
UIAlertView委托方法如下：
- (void)customIOS7dialogButtonTouchUpInside: (CustomIOS7AlertView *)alertView clickedButtonAtIndex: (NSInteger)buttonIndex
{
NSLog(@"Button at position %d is clicked on alertView %d.", (int)buttonIndex, (int)[alertView tag]);
[alertView close];
[self.updateTV becomeFirstResponder];
}
在上面的代码中应用程序崩溃在[self.updateTV becomeFirstResponder];
崩溃日志如下所示：
2016-12-09 11:47:53.069049 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.069451 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.070530 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.070970 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.071223 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.072122 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.132574 oGoing[250:11235] [MC] System group container for systemgroup.com.apple.configurationprofiles path is /private/var/containers/Shared/SystemGroup/systemgroup.com.apple.configurationprofiles
2016-12-09 11:47:53.136872 oGoing[250:11235] [MC] Reading from public effective user settings.
2016-12-09 11:47:53.370813 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.372515 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.372781 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.373559 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.373942 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.374133 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.374921 oGoing[250:11235] self.viewControllers lastObject ==<OGAddUpdateViewController: 0x17bebe00>
2016-12-09 11:47:53.477836 oGoing[250:11235] *** Terminating app due to uncaught exception 'UIViewControllerHierarchyInconsistency', reason: 'child view controller:<UICompatibilityInputViewController: 0x6e208f0> should have parent view controller:<OGAddUpdateViewController: 0x17bebe00> but requested parent is:<UIInputWindowController: 0x17b81400>'
*** First throw call stack:
(0x1c38de07 0x1b5f3077 0x1c38dd4d 0x2146dd8b 0x21d43ba3 0x21d448cd 0x213e11bb 0x21d44655 0x21d3d1c9 0x21497b8f 0x213f9153 0x21456e15 0x21457181 0x2157ff83 0x1b04f5 0x287bb5 0x2140895d 0x214088eb 0x213f2a87 0x21408213 0x21407d5f 0x21402947 0x213d37c9 0x21b73c39 0x21b6d8db 0x1c349c8b 0x1c349795 0x1c347a6b 0x1c297073 0x1c296e81 0x1da3fbfd 0x2143eacf 0x21439201 0xed585 0x1ba6250b)
libc++abi.dylib: terminating with uncaught exception of type NSException
帮我摆脱这个困境。我已经被困在这个问题了两天了。
我的项目已经在 AppStore 上并且运行正常。但是当我在 iOS 10 设备中运行它时，它会产生这个问题。
先感谢您
试试这个，它正在工作，同时...
我以前遇到过这个问题。
Problem:
您必须确保分配给 inputView 或 inputAccessoryView 的视图不属于任何父视图。当您从 ViewController 内的 xib 创建这些视图时，默认情况下它们被设置为超级视图的子视图。
解决方案提示：
在要分配给 inputView 或 inputAccessoryView 的视图上使用方法removeFromSuperview
from : https://stackoverflow.com/a/25882277/3901620 https://stackoverflow.com/a/25882277/3901620
来自 xib 的同时：
[self.DatePickerView removeFromSuperview];
[Textfield setInputView:self.DatePickerView];
[Textfield setInputView:self.DatePickerView];
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