动态 UITextfield 不响应键盘输入
您好，下面是我正在使用的代码，文本字段是在 .h 文件中创建的，当我运行代码时，文本字段不会响应键盘（没有键入的字母可见），而且当我在键盘上单击“完成”时，它不会触发文本字段应该返回方法。请帮忙！！！
UIActionSheet *aac =[[UIActionSheet alloc] initWithTitle:@"New list item" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
UIDatePicker *theDatePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0,100.0,0.0,0.0)];
self.textField=[[UITextField alloc] init];
self.textField.frame = CGRectMake(12, 45, 260, 25);
[self.textField setDelegate:self];
self.textField.textColor=[UIColor blackColor];
self.textField.backgroundColor=[UIColor whiteColor];
[textField setBorderStyle:UITextBorderStyleRoundedRect];
[textField setReturnKeyType:UIReturnKeyDone];
textField.keyboardType=UIKeyboardAppearanceDefault;
[aac addSubview:textField];
[aac addSubview:theDatePicker];
[textField release];
[theDatePicker release];
UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Done"]];
closeButton.momentary=YES;
closeButton.frame = CGRectMake(270, 7.0f, 50.0f, 30.0f);
closeButton.segmentedControlStyle=UISegmentedControlStyleBar;
closeButton.tintColor =[UIColor blackColor];
[closeButton addTarget:self action:@selector(dismissActionSheet) forControlEvents:UIControlEventValueChanged];
[aac addSubview:closeButton];
[closeButton release];
[aac showInView:self.view];
[aac setBounds:CGRectMake(0, 0, 320, 685)];
HI all below is the code i am using, the textField is created in .h file and when i run the code the text field doesnt respond to keyboard( no letters typed are visible) also when i click Done on keybpard it does not trigger textfieldshouldreturn method. please help!!!
UIActionSheet *aac =[[UIActionSheet alloc] initWithTitle:@"New list item" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
UIDatePicker *theDatePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0,100.0,0.0,0.0)];
self.textField=[[UITextField alloc] init];
self.textField.frame = CGRectMake(12, 45, 260, 25);
[self.textField setDelegate:self];
self.textField.textColor=[UIColor blackColor];
self.textField.backgroundColor=[UIColor whiteColor];
[textField setBorderStyle:UITextBorderStyleRoundedRect];
[textField setReturnKeyType:UIReturnKeyDone];
textField.keyboardType=UIKeyboardAppearanceDefault;
[aac addSubview:textField];
[aac addSubview:theDatePicker];
[textField release];
[theDatePicker release];
UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:@"Done"]];
closeButton.momentary=YES;
closeButton.frame = CGRectMake(270, 7.0f, 50.0f, 30.0f);
closeButton.segmentedControlStyle=UISegmentedControlStyleBar;
closeButton.tintColor =[UIColor blackColor];
[closeButton addTarget:self action:@selector(dismissActionSheet) forControlEvents:UIControlEventValueChanged];
[aac addSubview:closeButton];
[closeButton release];
[aac showInView:self.view];
[aac setBounds:CGRectMake(0, 0, 320, 685)];
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您是否尝试过从 textField 之前删除
self.？如果您在标头中定义了它，并在 .m 中使用了 @property 和 @synthesize，那么您应该没问题。另外，请确保界面中有Have you tried removing the
self.from before textField? If you have defined it in your header, as well as used @property, and @synthesize in your .m, you should be good. Also, make sure you have the<UITextFieldDelegate>in your interface.我刚刚遇到了同样的问题；当我触摸我的文本字段时，它确实会调出键盘，但是当点击键盘时，文本字段中没有出现字母。
就我而言，我一直在弄乱
AppDelegate.m并删除了[self.window makeKeyAndVisible];。因此，再次将其放回去（在应用程序中：didFinishLaunchingWithOptions:）为我解决了这个问题。I just had the same problem; My textfield did bring up the keyboard when I touched it, but no letters appeared in the textfield when tapping on the keyboard.
In my case I had been messing with the
AppDelegate.mand removed the[self.window makeKeyAndVisible];. So putting it back again (in application:didFinishLaunchingWithOptions:) solved it for me.