datepicker和textfields [英] datepicker and textfields

问题描述

我很喜欢ios开发，需要知道如何设置两个从日期选择器获取日期的文本字段。以下是代码：

.h文件

  #import< UIKit / UIKit.h> 
 
 @interface DatePickerForTermins：UIViewController< UITextFieldDelegate> 
 {
 // NSDate * frmDate; 
 UIActionSheet * dateSheet; 
 UIActionSheet * dateSheet2; 
 
 
 
 
 
} 
 
 @property（弱，非原子）IBOutlet UITextField * fromDateTextField; 
 @property（weak，nonatomic）IBOutlet UITextField * toDateTextField; 
 
 @property（weak，nonatomic）IBOutlet UILabel * selectedFromDateLabel; 
 @property（weak，nonatomic）IBOutlet UILabel * chosenToDateLabel; 
 
 @property（weak，nonatomic）NSDate * frmDate; 
 @property（weak，nonatomic）NSDate * toDate; 
 
  - （void）setDateFRM; 
  - （void）dismissDateSet; 
  - （void）cancelDateSet; 
  - （void）setDateTO; 
  - （void）dismissDateSet2; 
  - （void）cancelDateSet2; 
 @end 
  

和.m文件：

  #importDatePickerForTermins.h
 
 @interface DatePickerForTermins（）
 
 @end 
 
 @implementation DatePickerForTermins 
 @synthesize fromDateTextField; 
 @synthesize selectedFromDateLabel; 
 @synthesize frmDate; 
 @synthesize chosenToDateLabel; 
 @synthesize toDateTextField; 
 @synthesize toDate; 
 
 
 
 
  - （id）initWithNibName：（NSString *）nibNameOrNil bundle：（NSBundle *）nibBundleOrNil 
 {
 self = super initWithNibName：nibNameOrNil bundle：nibBundleOrNil]; 
 if（self）{
 //自定义初始化
} 
 return self; 
} 
 
  - （void）viewDidLoad 
 {
 [super viewDidLoad]; 
 //加载视图后执行任何其他设置。 
} 
 
  - （void）didReceiveMemoryWarning 
 {
 [super didReceiveMemoryWarning]; 
 //处理可以重新创建的任何资源。 
} 
 
  - （void）setDateFRM 
 {
 
 dateSheet = [[UIActionSheet alloc] initWithTitle：nil delegate：nil cancelButtonTitle：nil destructiveButtonTitle：nil otherButtonTitles：nil]; 
 [dateSheet setActionSheetStyle：UIActionSheetStyleDefault]; 
 
 CGRect pickerFrame = CGRectMake（0，44，0，0）; 
 UIDatePicker * frmDatePicker = [[UIDatePicker alloc] initWithFrame：pickerFrame]; 
 [frmDatePicker setDatePickerMode：UIDatePickerModeDate]; 
 [dateSheet addSubview：frmDatePicker]; 
 UIToolbar * controlToolBar = [[UIToolbar alloc] initWithFrame：CGRectMake（0，0，dateSheet.bounds.size.width，44）]; 
 
 [controlToolBar setBarStyle：UIBarStyleDefault]; 
 [controlToolBar sizeToFit]; 
 
 UIBarButtonItem * spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem：UIBarButtonSystemItemFlexibleSpace target：nil action：nil]; 
 
 
 UIBarButtonItem * setButton = [[UIBarButtonItem alloc] initWithTitle：@Set Date样式：UIBarButtonItemStyleDone target：self action：@selector（dismissDateSet）]; 
 
 
 UIBarButtonItem * cancelButton = [[UIBarButtonItem alloc] initWithTitle：@取消样式：UIBarButtonItemStyleBordered target：self action：@selector（cancelDateSet）]; 
 
 
 
 [controlToolBar setItems：[NSArray arrayWithObjects：spacer，cancelButton，setButton，nil] animated：NO]; 
 
 [dateSheet addSubview：controlToolBar]; 
 
 [dateSheet showInView：self.view]; 
 
 [dateSheet setBounds：CGRectMake（0，0，320，425）]; 
 
} 
  - （void）setDateTO 
 {
 
 dateSheet2 = [[UIActionSheet alloc] initWithTitle：nil delegate：nil cancelButtonTitle：nil destructiveButtonTitle：nil otherButtonTitles：nil]; 
 [dateSheet2 setActionSheetStyle：UIActionSheetStyleDefault]; 
 
 CGRect pickerFrame = CGRectMake（0，44，0，0）; 
 UIDatePicker * frmDatePicker = [[UIDatePicker alloc] initWithFrame：pickerFrame]; 
 [frmDatePicker setDatePickerMode：UIDatePickerModeDate]; 
 [dateSheet2 addSubview：frmDatePicker]; 
 UIToolbar * controlToolBar = [[UIToolbar alloc] initWithFrame：CGRectMake（0，0，dateSheet2.bounds.size.width，44）]; 
 
 [controlToolBar setBarStyle：UIBarStyleDefault]; 
 [controlToolBar sizeToFit]; 
 
 UIBarButtonItem * spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem：UIBarButtonSystemItemFlexibleSpace target：nil action：nil]; 
 
 
 UIBarButtonItem * setButton = [[UIBarButtonItem alloc] initWithTitle：@Set Date样式：UIBarButtonItemStyleDone target：self action：@selector（dismissDateSet2）]; 
 
 
 UIBarButtonItem * cancelButton = [[UIBarButtonItem alloc] initWithTitle：@取消样式：UIBarButtonItemStyleBordered target：self action：@selector（cancelDateSet2）]; 
 
 
 
 [controlToolBar setItems：[NSArray arrayWithObjects：spacer，cancelButton，setButton，nil] animated：NO]; 
 
 [dateSheet2 addSubview：controlToolBar]; 
 
 [dateSheet2 showInView：self.view]; 
 
 [dateSheet2 setBounds：CGRectMake（0，0，320，425）]; 
 
} 
  - （void）cancelDateSet 
 {
 [dateSheet dismissWithClickedButtonIndex：0 animated：YES]; 
 
} 
  - （void）cancelDateSet2 
 {
 [dateSheet2 dismissWithClickedButtonIndex：0 animated：YES]; 
 
} 
 
  - （void）dismissDateSet 
 {
 NSArray * listOfSubviews = [dateSheet subviews]; 
 for（NSString * sre in listOfSubviews）{
 NSLog（@Lista Sub：％@，sre）; 
 
 
 
 for（UIView * subView in listOfSubviews）{
 if（[subView isKindOfClass：[UIDatePicker class]]）{
 
 self.frmDate = [（UIDatePicker *）subView date]; 
 
} 
} 
 NSDateFormatter * dateFormater = [[NSDateFormatter alloc] init]; 
 [dateFormater setDateFormat：@dd / MM / yyyy]; 
 [fromDateTextField setText：[dateFormater stringFromDate：self.frmDate]]; 
 
 
 // NSCalendar * calendar = [NSCalendar currentCalendar]; 
 // unsigned unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit; 
 // NSDateComponents 
 
 NSString * outputStr = [NSString stringWithFormat：@From Datum je：％@，self.frmDate]; 
 
 
 
 [self.chosenFromDateLabel setText：outputStr]; 
 
 
 [dateSheet dismissWithClickedButtonIndex：0 animated：YES]; 
 
 
 
} 
 
  - （void）dismissDateSet2 
 {
 NSArray * listOfSubviews = [dateSheet2 subviews]; 
（NSString * sre in listOfSubviews）{
 NSLog（@Lista Sub2：％@，sre）; 
} 
 
 for（UIView * subView in listOfSubviews）{
 if（[subView isKindOfClass：[UIDatePicker class]]）{
 
 self.toDate = [（UIDatePicker *）subView date]; 
 
} 
} 
 NSDateFormatter * dateFormater = [[NSDateFormatter alloc] init]; 
 [dateFormater setDateFormat：@dd / MM / yyyy]; 
 [toDateTextField setText：[dateFormater stringFromDate：self.toDate]]; 
 
 
 // NSCalendar * calendar = [NSCalendar currentCalendar]; 
 // unsigned unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit; 
 // NSDateComponents 
 
 NSString * outputStr = [NSString stringWithFormat：@From Datum je：％@，self.frmDate]; 
 
 
 
 [self.chosenToDateLabel setText：outputStr]; 
 
 
 [dateSheet2 dismissWithClickedButtonIndex：0 animated：YES]; 
 
 
 
 
 
 
 
 
  - （BOOL）textFieldShouldBeginEditing：（UITextField *）textField 
 {
 
 
 [self setDateFRM]; 
返回NO; 
 
 
 
 
 
} 
 
 @end 
  

其他文本字段只是给出普通键盘而不是datepicker。任何人都知道如何实现这一点？

解决方案

使用addTarget在日期更改时收到消息。

示例：

  [rmDatePicker addTarget：self action：@selector（datePickerValueChanged :) forControlEvents：UIControlEventValueChanged |; 
 ... 
 
  - （void）datePickerValueChanged：（id）sender {
 UIDatePicker * picker =（UIDatePicker *）sender; 
 NSDate dateFromPicker = picker.date; 
 fromDateTextField.text = [dateFromPicker description]; 
} 
  

更多信息： UIKit中的目标动作

I am new to ios development and need to know how to set up two text fields which get dates from date pickers. Here's the code:

.h file

#import <UIKit/UIKit.h>

@interface DatePickerForTermins : UIViewController<UITextFieldDelegate>
{
    //NSDate *frmDate;
    UIActionSheet *dateSheet;
    UIActionSheet *dateSheet2;





}

@property (weak, nonatomic) IBOutlet UITextField *fromDateTextField;
@property (weak, nonatomic) IBOutlet UITextField *toDateTextField;

@property (weak, nonatomic) IBOutlet UILabel *chosenFromDateLabel;
@property (weak, nonatomic) IBOutlet UILabel *chosenToDateLabel;

@property (weak, nonatomic) NSDate *frmDate;
@property (weak, nonatomic) NSDate *toDate;

-(void)setDateFRM;
-(void)dismissDateSet;
-(void)cancelDateSet;
-(void)setDateTO;
-(void)dismissDateSet2;
-(void)cancelDateSet2;
@end

and .m file:

#import "DatePickerForTermins.h"

@interface DatePickerForTermins ()

@end

@implementation DatePickerForTermins
@synthesize fromDateTextField;
@synthesize chosenFromDateLabel;
@synthesize frmDate;
@synthesize chosenToDateLabel;
@synthesize toDateTextField;
@synthesize toDate;




- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(void)setDateFRM
{

    dateSheet=[[UIActionSheet alloc]initWithTitle:nil delegate:nil cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
    [dateSheet setActionSheetStyle:UIActionSheetStyleDefault];

    CGRect pickerFrame=CGRectMake(0, 44, 0, 0);
    UIDatePicker *frmDatePicker=[[UIDatePicker alloc]initWithFrame:pickerFrame];
    [frmDatePicker setDatePickerMode:UIDatePickerModeDate];
    [dateSheet addSubview:frmDatePicker];
    UIToolbar *controlToolBar=[[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, dateSheet.bounds.size.width, 44)];

    [controlToolBar setBarStyle:UIBarStyleDefault];
    [controlToolBar sizeToFit];

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


    UIBarButtonItem *setButton=[[UIBarButtonItem alloc]initWithTitle:@"Set Date" style:UIBarButtonItemStyleDone target:self action:@selector(dismissDateSet)];


    UIBarButtonItem *cancelButton=[[UIBarButtonItem alloc]initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(cancelDateSet)];



    [controlToolBar setItems:[NSArray arrayWithObjects:spacer,cancelButton,setButton, nil]animated:NO];

    [dateSheet addSubview:controlToolBar];

    [dateSheet showInView:self.view];

    [dateSheet setBounds:CGRectMake(0, 0, 320, 425)];

}
-(void)setDateTO
{

    dateSheet2=[[UIActionSheet alloc]initWithTitle:nil delegate:nil cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
    [dateSheet2 setActionSheetStyle:UIActionSheetStyleDefault];

    CGRect pickerFrame=CGRectMake(0, 44, 0, 0);
    UIDatePicker *frmDatePicker=[[UIDatePicker alloc]initWithFrame:pickerFrame];
    [frmDatePicker setDatePickerMode:UIDatePickerModeDate];
    [dateSheet2 addSubview:frmDatePicker];
    UIToolbar *controlToolBar=[[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, dateSheet2.bounds.size.width, 44)];

    [controlToolBar setBarStyle:UIBarStyleDefault];
    [controlToolBar sizeToFit];

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


    UIBarButtonItem *setButton=[[UIBarButtonItem alloc]initWithTitle:@"Set Date" style:UIBarButtonItemStyleDone target:self action:@selector(dismissDateSet2)];


    UIBarButtonItem *cancelButton=[[UIBarButtonItem alloc]initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(cancelDateSet2)];



    [controlToolBar setItems:[NSArray arrayWithObjects:spacer,cancelButton,setButton, nil]animated:NO];

    [dateSheet2 addSubview:controlToolBar];

    [dateSheet2 showInView:self.view];

    [dateSheet2 setBounds:CGRectMake(0, 0, 320, 425)];

}
-(void)cancelDateSet
{
    [dateSheet dismissWithClickedButtonIndex:0 animated:YES];

}
-(void)cancelDateSet2
{
    [dateSheet2 dismissWithClickedButtonIndex:0 animated:YES];

}

-(void)dismissDateSet
{
    NSArray *listOfSubviews=[dateSheet subviews];
    for (NSString *sre in listOfSubviews) {
        NSLog(@"Lista Sub:%@",sre);
    }


    for (UIView *subView in listOfSubviews) {
        if([subView isKindOfClass:[UIDatePicker class]]){

            self.frmDate=[(UIDatePicker*)subView date];

        }
    }
    NSDateFormatter *dateFormater=[[NSDateFormatter alloc]init];
    [dateFormater setDateFormat:@"dd/MM/yyyy"];
    [fromDateTextField setText:[dateFormater stringFromDate:self.frmDate]];


    //    NSCalendar *calendar=[NSCalendar currentCalendar];
    //    unsigned unitFlags= NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit;
    //    NSDateComponents

    NSString *outputStr=[NSString stringWithFormat:@"From Datum je:%@",self.frmDate];



    [self.chosenFromDateLabel setText:outputStr];


    [dateSheet dismissWithClickedButtonIndex:0 animated:YES];



}

-(void)dismissDateSet2
{
    NSArray *listOfSubviews=[dateSheet2 subviews];
    for (NSString *sre in listOfSubviews) {
        NSLog(@"Lista Sub2:%@",sre);
    }

    for (UIView *subView in listOfSubviews) {
        if([subView isKindOfClass:[UIDatePicker class]]){

            self.toDate=[(UIDatePicker*)subView date];

    }
}
    NSDateFormatter *dateFormater=[[NSDateFormatter alloc]init];
    [dateFormater setDateFormat:@"dd/MM/yyyy"];
    [toDateTextField setText:[dateFormater stringFromDate:self.toDate]];


//    NSCalendar *calendar=[NSCalendar currentCalendar];
//    unsigned unitFlags= NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit;
//    NSDateComponents 

    NSString *outputStr=[NSString stringWithFormat:@"From Datum je:%@",self.frmDate];



    [self.chosenToDateLabel setText:outputStr];


    [dateSheet2 dismissWithClickedButtonIndex:0 animated:YES];



}




-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{


        [self setDateFRM];
        return NO;





}

@end

The other text field just gives the plain keyboard instead of datepicker. Anybody know how to accomplish this?

解决方案

Use "addTarget" to get a message when the dates was changed.

Example:

[rmDatePicker addTarget:self action:@selector(datePickerValueChanged:) forControlEvents:UIControlEventValueChanged|;
 ...

-(void) datePickerValueChanged:(id) sender {
   UIDatePicker *picker = (UIDatePicker*)sender;
   NSDate dateFromPicker = picker.date;
   fromDateTextField.text = [dateFromPicker description];
}

More infos: Target-Action in UIKit

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