Question

我正在尝试通过单击文本字段来实现日期选择器。我正在使用this link中提到的代码。

但我没有得到输出。如果有人知道如何通过单击文本字段来提取日期选择器。请为我提供一些解决方案。

提前致谢。

Answer 1

我看到了您的链接并获得了解决方案，请尝试以下代码。

#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];  
}

这段代码肯定对你有帮助，因为我运行代码并且工作正常。

Answer 2

-(BOOL) textFieldShouldBeginEditing:(UITextField *)txtField
{
[self createDatePicker];
}

设置委托TextField

Answer 3

您可以将日期选择器放在界面构建器中的另一个视图中......并将视图放在主视图下（x = 0; y = 460）。

因此，当你的textfield成为第一个响应者时（有一些委托方法，如textFieldDidBeginEditing :) ...只需使用datePicker在所需位置为视图设置动画。

动画可以像......一样完成。

[UIView beginAnimations:@"some_random_name" context:nil];

    //give your date picker view a new frame

[UIView setAnimationDuration:0.3f]; //or any other value
[UIView commitAnimations];

Answer 4

检查是否为文本字段设置了委托。如果没有，请设置如下：

textField.delegate = self;

或者在xib中添加与委托的连接。

Answer 5

我们可以使用UITextField的 inputView 和 inputAccessoryView 。在.h文件中声明，在.m文件中声明@synthesize。

@property (nonatomic, retain) IBOutlet UIToolbar    *_accessoryView;
@property (nonatomic, retain) IBOutlet UIDatePicker *_datePickerView;

将它们连接到.xib文件中的文件所有者，确保它不在self.view中。

- (void)viewDidLoad
    {   
        _dateOfBirthTextField.inputView = self._datePickerView;
        _dateOfBirthTextField.inputAccessoryView = self._toolbar;
    }

还要编写函数以从选择器中获取日期

#pragma mark- UITextField with UIDatePicker-

- (IBAction)dateChanged:(id)sender {
    UIDatePicker *picker = (UIDatePicker *)sender;
    _dateOfBirthTextField.text = [NSString stringWithFormat:@"%@", picker.date];
}

- (IBAction)doneEditing:(id)sender {
    [_dateOfBirthTextField resignFirstResponder];
}

在valueChanged上添加dateChanged：IBAction：_datePicker的动作。和doneEditing：工具栏按钮操作上的IBAction。

Answer 6

使用以下代码：

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
[actionSheet showInView:self.tabBarController.tabBar];
[actionSheet setFrame:CGRectMake(0, 220, 320,350)];
pickerToolbar.barStyle = UIBarStyleDefault;
[pickerToolbar sizeToFit];
pickerToolbar.barStyle = UIBarStyleBlackTranslucent;

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

UIBarButtonItem *cancelBtn = [[UIBarButtonItem alloc] initWithTitle:[BuddyCalcAppDelegate getLocalvalue:@"Cancel"] style:UIBarButtonSystemItemCancel target:self action:@selector(cancel_clicked:)];
[barItems addObject:cancelBtn];
[cancelBtn release];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
[barItems addObject:flexSpace];
[flexSpace release];
UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithTitle:[BuddyCalcAppDelegate getLocalvalue:@"Done"] style:UIBarButtonItemStyleDone target:self action:@selector(done_clicked:)];
[barItems addObject:doneBtn];
[doneBtn release];
[pickerToolbar setItems:barItems animated:YES];
[actionSheet addSubview:pickerToolbar];
[barItems release];
[pickerToolbar release];
UIDatePicker *datePicker=[[UIDatePicker alloc]init];
if ([UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationLandscapeLeft || [UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationLandscapeRight) 
{
    datePicker.frame=CGRectMake(0,32,480, 216); 
    [scrollView setContentOffset:CGPointMake(0, 60) animated:YES];
} else {
    datePicker.frame=CGRectMake(0,44,320, 216);
}

datePicker.datePickerMode = UIDatePickerModeDateAndTime;
[datePicker setMinuteInterval:5];
[datePicker setTag:10];
[actionSheet addSubview:datePicker];
[datePicker addTarget:self action:@selector(Result) forControlEvents:UIControlEventValueChanged];
[datePicker release];

单击文本字段的datepicker

6 个答案: