iOS 6：在UITextField中使用UIDatePicker

Question

我在连接日期选择器和文本框方面遇到了问题。我尝试了stackoverflow上的所有解决方案，但它们在iOS 6上不起作用。你能描述一下如何制作它吗？我想通过日期选择器在文本框中选择日期。

- alterpub

Answer 1

您应该使用UITextField的inputView属性，以使选择器显示在键盘的位置。然后，iOS6会自动处理一切（用动画显示选择器而不是键盘等）。

注意：您可能还需要添加一些inputAccessoryView（通常是一个带有“确定”按钮的UIToolBar），以使用户能够关闭选择器（当然，您“确定”按钮的IBAction将简单地调用[textField resignFirstResponder]）。因为UIDatePicker没有任何验证输入的按钮（而键盘有其“Return Key”）。

- AliSoftware

Answer 2

#import "TextfieldwithDatepickerViewController.h"

UIActionSheet *pickerViewPopup;

@implementation TextfieldwithDatepickerViewController
- (void)textFieldDidBeginEditing:(UITextField *)aTextField{  
    [aTextField resignFirstResponder];  

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

    UIDatePicker *pickerView = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 44, 0, 0)];  
    pickerView.datePickerMode = UIDatePickerModeDate;  
    pickerView.hidden = NO;  
    pickerView.date = [NSDate date];  

    UIToolbar *pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];  
    pickerToolbar.barStyle = UIBarStyleBlackOpaque;  
    [pickerToolbar sizeToFit];  

    NSMutableArray *barItems = [[NSMutableArray alloc] init];  

    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];  
    [barItems addObject:flexSpace];  

    UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(doneButtonPressed:)];  
    [barItems addObject:doneBtn];  

    UIBarButtonItem *cancelBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(cancelButtonPressed:)];  
    [barItems addObject:cancelBtn];  

    [pickerToolbar setItems:barItems animated:YES];  

    [pickerViewPopup addSubview:pickerToolbar];  
    [pickerViewPopup addSubview:pickerView];  
    [pickerViewPopup showInView:self.view];  
    [pickerViewPopup setBounds:CGRectMake(0,0,320, 464)];  
}  

-(void)doneButtonPressed:(id)sender{  
    //Do something here here with the value selected using [pickerView date] to get that value  

    [pickerViewPopup dismissWithClickedButtonIndex:1 animated:YES];  
}  

-(void)cancelButtonPressed:(id)sender{  
    [pickerViewPopup dismissWithClickedButtonIndex:1 animated:YES];  
}  

- Omarj

---

我已经创建并编译了代码，也成功启动了应用程序，但选择视图（pickview）或选择工具栏（picktoolbar）未在界面中出现。只有标准键盘显示出来了。您能否提供带有日期选择器的项目源代码？或者您可以将其上传至GitHub吗？ - alterpub