Question

你会怎么做？

我有一个带有UITextField的表单。当我点击它时，我想显示一个UIDatePicker，而不是默认弹出的默认键盘？请注意，我的表单上还有其他元素。

Answer 1

我认为这是一种更正式的方法：

UIDatePicker *datePicker = [[[UIDatePicker alloc] init] autorelease];
datePicker.datePickerMode = UIDatePickerModeDate;
[datePicker addTarget:self action:@selector(datePickerValueChanged:) forControlEvents:UIControlEventValueChanged];
datePicker.tag = indexPath.row;
textField.inputView = datePicker;

Answer 2

in .h

UIDatePicker *datePicker;
NSDate *date;
UIToolbar *keyboardToolbar;

ViewDidLoad中的

：

if (keyboardToolbar == nil) {
    keyboardToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 44)];
    [keyboardToolbar setBarStyle:UIBarStyleBlackTranslucent];

    UIBarButtonItem *extraSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

    UIBarButtonItem *accept = [[UIBarButtonItem alloc] initWithTitle:@"Accept" style:UIBarButtonItemStyleDone target:self action:@selector(closeKeyboard:)];

    [keyboardToolbar setItems:[[NSArray alloc] initWithObjects: extraSpace, accept, nil]];
}

self.txtDate.inputAccessoryView = keyboardToolbar;

datePicker = [[UIDatePicker alloc] init];
datePicker.datePickerMode = UIDatePickerModeDate;
[datePicker addTarget:self action:@selector(datePickerValueChanged:) forControlEvents:UIControlEventValueChanged];

self.txtDate.inputView = datePicker;


- (void)datePickerValueChanged:(id)sender{

date = datePicker.date;

NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:@"dd/MM/YYYY"];


[self.txtDate setText:[df stringFromDate:date]];
}

故事板中的

添加到txtDate - ＆gt; EditingDidEnd

- (IBAction)establishHour:(id)sender{

hour = hourPicker.date;

NSDateFormatter *hf = [[NSDateFormatter alloc] init];
[hf setDateFormat:@"HH:MM"];

[self.txtHour setText:[hf stringFromDate:hour]];

}

将键盘设置为DatePicker，并创建一个带有按钮的工具栏以接受选择。

Answer 3

如果有人愿意的话，我已经将Johan Kool的答案转换成了swift。我将代码放在viewDidLoad中。

let datePicker = UIDatePicker()
datePicker.datePickerMode = UIDatePickerMode.Date
datePicker.addTarget(self, action: "datePickerValueChanged:", forControlEvents: UIControlEvents.ValueChanged)
textField.inputView = datePicker

Answer 4

(IBAction)estableceHora:(id)sender{
   Hora = horaPicker.date;
   NSDateFormatter *hf = [[NSDateFormatter alloc] init];
   [hf setDateFormat:@"HH:MM"];
   [self.txtHora setText:[hf stringFromDate:Hora]];
}

Answer 5

在.h文件中添加：

UIViewController <UIPickerViewDelegate, UIPickerViewDataSource>

在.m文件中添加：

{

NSDateFormatter *df = [[NSDateFormatter alloc] init];

df.dateStyle = NSDateFormatterMediumStyle;

pTxtDate.text = [NSString stringWithFormat:@"%@",

[df stringFromDate:[NSDate date]]];

NSLog(@"pTxtDate.text %@",pTxtDate.text);

[df release];

[self.view addSubview:pTxtDate]; 

[pTxtDate release];

DatePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 250, 325, 300)];

DatePicker.datePickerMode = UIDatePickerModeDate;

DatePicker.hidden = NO;

DatePicker.date = [NSDate date];

[DatePicker addTarget:self

  action:@selector(LabelChange:)

forControlEvents:UIControlEventValueChanged];

[self.view addSubview:DatePicker];

    [DatePicker release];

}



- (void)LabelChange:(id)sender {

NSDateFormatter *df = [[NSDateFormatter alloc] init];

df.dateStyle = NSDateFormatterMediumStyle;

pTxtDate.text = [NSString stringWithFormat:@"%@",

[df stringFromDate:DatePicker.date]];

}

iPhone datepicker而不是键盘？

5 个答案: