使用UIToolBar上的完成按钮来取消UIPickerView [英] Dismissing UIPickerView with Done button on UIToolBar

问题描述

我只是试着解决一个 UIPickerView - 导航栏上的按钮或选择器上方的工具栏上的完成按钮视图。我已经实现了两个按钮，我试图关闭选择器视图并辞职第一个响应者。

如何解除 UIPickerView



这是我的代码 UIToolBar ：

  UIToolbar * keyboardDoneButtonView = [[UIToolbar alloc] init]; 
 keyboardDoneButtonView.barStyle = UIBarStyleBlack; 
 keyboardDoneButtonView.translucent = YES; 
 keyboardDoneButtonView.tintColor = nil; 
 [keyboardDoneButtonView sizeToFit]; 
 UIBarButtonItem * doneButton = [[[UIBarButtonItem alloc] initWithTitle：@Done
 style：UIBarButtonItemStyleBordered target：self 
 action：@selector（pickerDoneClicked :)] autorelease]; 
 
 [keyboardDoneButtonView setItems：[NSArray arrayWithObjects：doneButton，nil]]; 
 
 textField.inputAccessoryView = keyboardDoneButtonView; 
  

有人可以帮我吗？

解决方案

我得到它的工作在我的尽头，虽然我相信我的测试应用程序是比较简单得多，所以希望结构仍然适用于你的。

实质上，这就是我做的。我有一个 UIPickerView ， UIDatePickerView 和 UITextField 在IB。 pickerView的 dataSource 和委托都链接到文件的所有者，委托 of textField。

在我的标题中， pre> UISomething * object;
@property（nonatomic，retain）IBOutlet UISomething * object;




我还有协议链接UITextFieldDelegate> ）。在实现文件中，一切都是合成的。然后在 viewDidLoad 中，我有这个。

   - （void）viewDidLoad 
 {
 UIToolbar * keyboardDoneButtonView = [[UIToolbar alloc] init]; 
 keyboardDoneButtonView.barStyle = UIBarStyleBlack; 
 keyboardDoneButtonView.translucent = YES; 
 keyboardDoneButtonView.tintColor = nil; 
 [keyboardDoneButtonView sizeToFit]; 
 UIBarButtonItem * doneButton = [[[UIBarButtonItem alloc] initWithTitle：@Done
 style：UIBarButtonItemStyleBordered target：self 
 action：@selector（pickerDoneClicked :)] autorelease]; 
 
 [keyboardDoneButtonView setItems：[NSArray arrayWithObjects：doneButton，nil]]; 
 
 textField.inputAccessoryView = keyboardDoneButtonView; 
 [datePicker removeFromSuperview]; 
 [pickerView removeFromSuperview]; 
 [super viewDidLoad]; 
} 
  

当textField变为活动状态时，我将其称为

   - （void）textFieldDidBeginEditing：（UITextField *）textField {
 [self.view addSubview：pickerView]; 
 [self.view addSubview：datePicker]; 
} 
  

最后，还有action方法

   - （IBAction）pickerDoneClicked：（id）sender {
 [datePicker removeFromSuperview]; 
 [pickerView removeFromSuperview]; 
 [textField resignFirstResponder]; 
} 
  

这一切都适用于我。一切都显示和删除，因为它应该。所以有了运气，这也会为你的秘诀

I am just trying out which is better with regards to dismissing a UIPickerView -- a button on the navigation bar or a "Done" button on a toolbar above the picker view. I have implemented both buttons, and I am trying to dismiss the picker view and resign first responder.

How can I dismiss the UIPickerView with the "Done" Button on the toolbar?

This is my code for the UIToolBar:

UIToolbar* keyboardDoneButtonView = [[UIToolbar alloc] init];
keyboardDoneButtonView.barStyle = UIBarStyleBlack;
keyboardDoneButtonView.translucent = YES;
keyboardDoneButtonView.tintColor = nil;
[keyboardDoneButtonView sizeToFit];
UIBarButtonItem* doneButton = [[[UIBarButtonItem alloc] initWithTitle:@"Done"
                                                                style:UIBarButtonItemStyleBordered target:self
                                                               action:@selector(pickerDoneClicked:)] autorelease];

[keyboardDoneButtonView setItems:[NSArray arrayWithObjects:doneButton, nil]];

textField.inputAccessoryView = keyboardDoneButtonView;

Could someone help me with this?

解决方案

I got it working on my end, though I'm sure my test app is much much simpler in comparison, so hopefully the structure still works for yours.

In essence, this is all I did. I have a UIPickerView, UIDatePickerView, and UITextField set up in IB. The pickerView's dataSource and delegate are both linked to File's Owner, as is the delegate of the textField.

In my header, I have them all declared with the following structure

UISomething *object;
@property (nonatomic, retain) IBOutlet UISomething *object;

I've also got the protocols linked (<UIPickerViewDelegate, UIPickerViewDataSource, UITextFieldDelegate>). In the implementation file, everything is synthesized. Then in viewDidLoad, I have this.

- (void)viewDidLoad
{
    UIToolbar* keyboardDoneButtonView = [[UIToolbar alloc] init];
    keyboardDoneButtonView.barStyle = UIBarStyleBlack;
    keyboardDoneButtonView.translucent = YES;
    keyboardDoneButtonView.tintColor = nil;
    [keyboardDoneButtonView sizeToFit];
    UIBarButtonItem* doneButton = [[[UIBarButtonItem alloc] initWithTitle:@"Done"
                                                                    style:UIBarButtonItemStyleBordered target:self
                                                                   action:@selector(pickerDoneClicked:)] autorelease];

    [keyboardDoneButtonView setItems:[NSArray arrayWithObjects:doneButton, nil]];

    textField.inputAccessoryView = keyboardDoneButtonView;
    [datePicker removeFromSuperview];
    [pickerView removeFromSuperview];
    [super viewDidLoad];
}

When the textField becomes active, I call this

- (void)textFieldDidBeginEditing:(UITextField *)textField {
    [self.view addSubview:pickerView];
    [self.view addSubview:datePicker];
}

Then finally, there's the action method

- (IBAction)pickerDoneClicked:(id)sender {
    [datePicker removeFromSuperview];
    [pickerView removeFromSuperview];
    [textField resignFirstResponder];
}

This all works for me. Everything gets displayed and removed as it should. So with any luck, this will do the trick for you too

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