调用becomeFirstResponder时，UITextView使应用程序崩溃
我在UIView有一个UITextView 。 当viewLoad，我有一个UIPickerView在一个UIAlertView与“确定”button。 当我从select器中select任何值，然后单击“确定”，我需要使UITextView处于活动状态 。
为此我写了[<myTextView> becomeFirstResponder]; UITextView委托方法。 只要这个方法执行，就会调用textViewShouldBeginEditing委托方法。 这个方法执行正确，我在这里返回TRUE，但是在那之后执行返回到[<myTextView> becomeFirstResponder]; 然后应用程序崩溃。
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]; }
在上面的代码应用程序崩溃在[self.updateTV becomeFirstResponder];
崩溃日志显示如下：
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
帮我摆脱这一点。 我被困在这2天以来。
我的项目已经在AppStore上，这是正常工作。 但是当我在iOS 10设备上运行它时，会产生这个问题。
先谢谢你
试试这个工作，而…
我之前遇到过这个问题。
问题 ：
您必须确保您将分配给inputView或inputAccessoryView的视图不属于任何父视图。 当你从一个ViewController里面的xib创build这些视图时，默认情况下它们被设置为superview的子视图。
解决scheme提示
在您将分配给inputView或inputAccessoryView的视图上使用removeFromSuperview方法
从： https ： //stackoverflow.com/a/25882277/3901620
而从xib：
[self.DatePickerView removeFromSuperview]; [Textfield setInputView:self.DatePickerView]; [Textfield setInputView:self.DatePickerView];