如何在iOS7中将UIDatePicker添加到UIALertView [英] How to Add a UIDatePicker to UIALertView in iOS7

问题描述

我已经在我的一个视图中实现了datepicker，
方法是将datepicker添加到Alertview。现在在iOS 7中，我无法在alertview上找到datepicker，当我搜索到的时候，我们无法在iOS7中添加任何警报视图。

我的要求是当我选择DOB文本字段时，我必须显示Datepickerview并修改日期，更改的值将被存储到文本字段中。 >

现在我的问题是如何在alertview上显示datepicker。

我已经尝试在视图中显示，但是

解决方案

我知道这是一个较老的问题，但我相信以下允许OP请求，我不认为会违反涉及AlertView层次结构更改的Apple规则：

   - （void）requestDateOfBirth 
 {
 UIDatePicker * birthDatePicker; 
 UIAlertView * setBirthDate; 
 NSDateFormatter * birthDateFormatter; 
 UITextField * birthDateInput; 
 //创建alertview 
 setBirthDate = [[UIAlertView alloc] initWithTitle：@出生日期
消息：nil 
委托：self 
 cancelButtonTitle：@ 取消
 otherButtonTitles：@OK，nil]; 
 setBirthDate.alertViewStyle = UIAlertViewStylePlainTextInput; 
 
 //创建datepicker 
 birthDatePicker = [[UIDatePicker alloc] init]; 
 [birthDatePicker addTarget：self action：@selector（dateChanged :) forControlEvents：UIControlEventValueChanged]; 
 birthDatePicker.datePickerMode = UIDatePickerModeDate; 
 birthDatePicker.date = [NSDate date]; 
 //获取明文中提供的textfield alertview 
 birthDateInput = [setBirthDate textFieldAtIndex：0]; 
 //将textfields inputView更改为日期选择器
 birthDateInput.inputView = birthDatePicker; 
 [birthDateInput setTextAlignment：NSTextAlignmentCenter]; 
 //创建日期格式化程序以适当显示日期
 birthDateFormatter = [[NSDateFormatter alloc] init]; 
 [birthDateFormatter setDateStyle：NSDateFormatterShortStyle]; 
 //将当前日期设置为textfield 
 birthDateInput.text = [birthDateFormatter stringFromDate：[NSDate date]]; 
 //显示警报视图并激活文本框
 [setBirthDate show]; 
 [birthDateInput becomeFirstResponder]; 
} 
  

然后不要忘记处理日期选择器中的更改

   - （void）dateChanged：（id）sender 
 {
 NSDateFormatter * birthDateFormatter; 
 UIDatePicker * birthDatePicker =（UIDatePicker *）发件人; 
 
 birthDateFormatter = [[NSDateFormatter alloc] init]; 
 [birthDateFormatter setDateStyle：NSDateFormatterShortStyle]; 
 birthDateInput.text = [birthDateFormatter stringFromDate：birthDatePicker.date]; 
} 
  

我希望这有助于

I have implemented datepicker in one of my view, The way is added the datepicker to the Alertview. Now in iOS 7 i am not able to find the datepicker on the alertview, When searched i have got, we cannot add anything to alertview in iOS7.

My requirement was When i will select the DOB textfield, I have to show the Datepickerview and modify the date and the changed value will be stored into the textfield.

Now my problem is How can i show the datepicker on the alertview.

I have tried showing on the view, but when trying to remove the datpicker from view it is not working.

解决方案

I know this is an older question, but I believe the following allows what the OP requested and I don't think will violate Apple's rules involving AlertView hierarchy changes:

- (void)requestDateOfBirth
{
UIDatePicker *birthDatePicker;
UIAlertView *setBirthDate;
NSDateFormatter *birthDateFormatter;
UITextField *birthDateInput;
//create the alertview
setBirthDate = [[UIAlertView alloc] initWithTitle:@"Date of Birth:"
                                              message:nil
                                             delegate:self
                                    cancelButtonTitle:@"Cancel"
                                    otherButtonTitles:@"OK", nil];
setBirthDate.alertViewStyle = UIAlertViewStylePlainTextInput;

//create the datepicker
birthDatePicker = [[UIDatePicker alloc] init];
[birthDatePicker addTarget:self action:@selector(dateChanged:) forControlEvents:UIControlEventValueChanged];
birthDatePicker.datePickerMode = UIDatePickerModeDate;    
birthDatePicker.date = [NSDate date];
//get the textfield provided in the plain text alertview
birthDateInput = [setBirthDate textFieldAtIndex:0];
//change the textfields inputView to the date picker
birthDateInput.inputView = birthDatePicker;
[birthDateInput setTextAlignment:NSTextAlignmentCenter];
//create a date formatter to suitably show the date
birthDateFormatter = [[NSDateFormatter alloc] init];
[birthDateFormatter setDateStyle:NSDateFormatterShortStyle];
//set the current date into the textfield
birthDateInput.text = [birthDateFormatter stringFromDate:[NSDate date]];
//show the alert view and activate the textfield
[setBirthDate show];
[birthDateInput becomeFirstResponder];
}

Then don't forget the handle the changes in the date picker

- (void) dateChanged:(id)sender
{
NSDateFormatter *birthDateFormatter;
UIDatePicker *birthDatePicker = (UIDatePicker *)sender;

birthDateFormatter = [[NSDateFormatter alloc] init];
[birthDateFormatter setDateStyle:NSDateFormatterShortStyle];
birthDateInput.text = [birthDateFormatter stringFromDate:birthDatePicker.date];
}

I hope this helps

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