UIDatePicker带有"完成"按钮

Question

我需要在我的日期选择器中添加一个"完成"按钮,如下图所示:

这是我的代码:

-(IBAction)chooseDate:(id)sender{
self.datepicker= [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 0, 320, 216)];
    self.datepicker.datePickerMode = UIDatePickerModeDate;
    datepicker.backgroundColor = Rgb2UIColor(52, 170, 220);

    [self.btnDone
                addTarget:self
                action:@selector(SetDatePickerTime:)
                forControlEvents:UIControlEventTouchDown];

 [self.view addSubview:self.datepicker];
}

Answer 1

随着Swift

// Place this code inside your ViewController or where you want ;)

var txtField: UITextField = UITextField(frame: CGRectMake(0, 0, 200, 50))

// the formatter should be "compliant" to the UIDatePickerMode selected below
var dateFormatter: NSDateFormatter {
    let formatter = NSDateFormatter()
    // customize the locale for the formatter if you want
    //formatter.locale = NSLocale(localeIdentifier: "it_IT")
    formatter.dateFormat = "dd/MM/yyyy"
    return formatter
}

override func viewDidLoad() {
    super.viewDidLoad()

    // date picker setup
    let datePickerView:UIDatePicker = UIDatePicker()

    // choose the mode you want
    // other options are: DateAndTime, Time, CountDownTimer
    datePickerView.datePickerMode = UIDatePickerMode.Date

    // choose your locale or leave the default (system)
    //datePickerView.locale = NSLocale.init(localeIdentifier: "it_IT")

    datePickerView.addTarget(self, action: "onDatePickerValueChanged:", forControlEvents: UIControlEvents.ValueChanged)
    txtField.inputView = datePickerView

    // datepicker toolbar setup
    let toolBar = UIToolbar()
    toolBar.barStyle = UIBarStyle.Default
    toolBar.translucent = true
    let space = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.FlexibleSpace, target: nil, action: nil)
    let doneButton = UIBarButtonItem(title: "Done", style: UIBarButtonItemStyle.Done, target: self, action: "doneDatePickerPressed")

    // if you remove the space element, the "done" button will be left aligned
    // you can add more items if you want
    toolBar.setItems([space, doneButton], animated: false)
    toolBar.userInteractionEnabled = true
    toolBar.sizeToFit()

    txtField.inputAccessoryView = toolBar

    self.view.addSubview(txtField)
}

func doneDatePickerPressed(){
    self.view.endEditing(true)
}

func onDatePickerValueChanged(datePicker: UIDatePicker) {
    self.txtField = dateFormatter.stringFromDate(datePicker.date)
}

Answer 2

创建一个日期选择器,然后将其添加为问题(self.fieldInQuestion.inputView = datePicker)中字段的输入视图.接下来,创建一个UIToolBar带有UIBarButtonItem 的(高度44)标题为"Done",self的目标和一个选择器(例如@selector(done)).将此添加为您将日期选择器作为(self.fieldInQuestion.inputAccessoryView = UIToolbarInstance)的输入视图的同一字段的输入附件视图.在选择器方法( - 上面的例子中完成的 - (void))中,请确保使用[self.fieldInQuestion resignFirstResponder]并将其关闭.

Answer 3

您问题的参考图像显示该应用程序正在使用UIToolbar，并且我假设在点击日期文本字段时出现带有完成按钮的datepicker。为此，在some.h文件中

/*****keyboard Done button   ***/



#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
   IBOutlet UIDatePicker *picker1;
    IBOutlet UITextField *txtFld;

}
@property (nonatomic, retain) UIToolbar *keyboardToolbar;

@end

在some.m文件中

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
         [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
 picker1=[[UIDatePicker alloc] initWithFrame:CGRectMake(0, 0, 320, 300)];//frames are just for demo
 [txtFld setInputView:picker1];
}

- (void)keyboardWillShow:(NSNotification *)notification
{
    if(keyboardToolbar == nil) {
        keyboardToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 410, 320, 44)] ;
        [keyboardToolbar setBarStyle:UIBarStyleBlackTranslucent];
        [keyboardToolbar sizeToFit];

        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:0.4];

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

        UIBarButtonItem *doneButton1 =[[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(resignKeyboard)];
        NSArray *itemsArray = [NSArray arrayWithObjects:flexButton,doneButton1, nil];

        [keyboardToolbar setItems:itemsArray];


        [txtFld setInputAccessoryView:keyboardToolbar];
        [self.view addSubview:keyboardToolbar];
        [UIView commitAnimations];
    }
}



-(void)resignKeyboard {

    [keyboardToolbar removeFromSuperview];
    [txtFld resignFirstResponder];
///do nescessary date calculation here

    }