如何在uitextfield中显示pickerview而不是键盘？

Question

我想显示UIPickerView成为UITextfield的FirstResponder而不是键盘，并在文本字段中填充选择器视图中的值。

有人知道吗？

Answer 1

编辑：这个答案是正确的，在写作的时候。苹果自此推出inputView。 Mafonya answer是你现在应该做的事情。

可以防止键盘弹出。将您的班级设置为UITextField的代表：textField.delegate = self并在您的界面声明之后（在标头文件中的{）之前添加：<UITextFieldDelegate>。

现在实行textFieldShouldBeginEditing:：

- (BOOL)textFieldShouldBeginEditing:(UITextField *)textField { 
    // Show UIPickerView 

    return NO; 
} 

如果你希望能够隐藏你的pickerView这种方法是行不通的。然后你可以做的是创建UITextField的子类并覆盖*trackingWithTouch:event:选择器，并在那些方面发挥你的魔力。您可能仍然需要从textFieldShouldBeginEditting:返回NO以防止显示键盘。

Answer 2

退房代码为（同时存在的TextView +的TabBar和pickerview +的TabBar代码）

UITextView and UIPickerView with its own UIToolbar

这将得到pickerview辞职等所有u需要做的就是用pickerview代理方法更新文本视图

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component 

而不是使用文本字段，使用UIlabel，白色背景。这样，当你点击它时键盘不会显示。重写UILabel上的触摸事件，当发生这种情况时，调用该方法来形成显示新视图的私有问题。

-(void) addToViewWithAnimation:(UIView *) theView 

Answer 3

嘿，我已经粘贴了一些代码，我写了一段时间来回顾这个场景。有两个例子一项所述的带actionsheet和一个没有actionsheet：

- (void)textFieldDidBeginEditing:(UITextField *)myTextField{ 

      [myTextField resignFirstResponder]; 

      actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil]; 

      [actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent]; 

      CGRect pickerFrame = CGRectMake(0, 40, 0, 0); 

      UIPickerView *pickerView = [[UIPickerView alloc] initWithFrame:pickerFrame]; 

       pickerView.showsSelectionIndicator = YES; 

       pickerView.dataSource = self; 

       pickerView.delegate = self; 

       [actionSheet addSubview:pickerView]; 

       [pickerView release]; //NB this may result on the pickerview going black the next time you come back to the textfield, if this is the case just remove this statement 

       UISegmentedControl *closeButton = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObject:NSLocalizedString(@"SUBMIT", @"")]]; 

       closeButton.momentary = YES; 

       closeButton.frame = CGRectMake(260, 7.0f, 50.0f, 30.0f); 

       closeButton.segmentedControlStyle = UISegmentedControlStyleBar; 

       closeButton.tintColor = [UIColor blackColor]; 

       [closeButton addTarget:self action:@selector(dismissActionSheet:) forControlEvents:UIControlEventValueChanged]; 

       [actionSheet addSubview:closeButton]; 

       [closeButton release]; 

       [actionSheet showInView:displayedInView]; 

       [actionSheet setBounds:CGRectMake(0, 0, 320, 485)]; 

} 

这是没有actionsheet的代码：http://www.buggyprogrammer.co.uk/2010/08/18/open-uipickerview-when-user-enters-textfield/

：

- (void)textFieldDidBeginEditing:(UITextField *)myTextField{ 

     [myTextField resignFirstResponder]; 

      for (int component = 0; component < (((NSInteger)numberOfComponentsForPickerView) - 1); component++) { 

       NSInteger valueForRow = [[self.textField.text substringWithRange:NSMakeRange(component,1)] integerValue]; 

       [pickerView selectRow:valueForRow inComponent:component animated:YES]; 

      } 

      [self fadeInPickerView]; 

      [view addSubview:pickerView]; 

      [pickerView release]; 

} 

这方面的一个更详细的示例，可以发现

Answer 4

使用[textfield setInputView：pickerView];

更换系统输入视图
inputView
inputAccessoryView

Answer 5

附加inputview到文本框。

picker = [[UIPickerView alloc]init]; 
[picker setDataSource:self]; 
[picker setDelegate:self]; 
[picker setShowsSelectionIndicator:YES]; 

MyTextField.inputView = picker;