xcode 向 UIDatePicker 添加按钮
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Adding a button to UIDatePicker
提问by humblePilgrim
Is it possible to add a 'Done' button to a UIDatePickerView,so that users can tap it to dismiss the view.
是否可以向 UIDatePickerView 添加“完成”按钮，以便用户可以点击它来关闭视图。
回答by Adam Eberbach
You should create a UIView to hold the picker and the button you need, then animate that view into the visible screen when you need a date entered, animate it away when the button is tapped. I have used a scheme like this where the button is actually the date label and is tapped to begin or end date editing.
您应该创建一个 UIView 来保存选择器和您需要的按钮，然后在需要输入日期时将该视图动画化到可见屏幕中，当点击按钮时将其动画化。我使用了这样的方案，其中按钮实际上是日期标签，点击开始或结束日期编辑。
回答by Suresh Varma
I am Posting the code Please declare the objects that are undeclared as per their type Rest you will get it done.. Hope this helps...
我正在发布代码请根据它们的类型声明未声明的对象 Rest 你会完成它.. 希望这有助于...
#pragma mark DatePickerView
UIImagePickerController* imagePickerController;
UIDatePicker *theDatePicker;
UIToolbar* pickerToolbar;
UIActionSheet* pickerViewDate;
-(void)DatePickerView
{
pickerViewDate = [[UIActionSheet alloc] initWithTitle:@"How many?"
delegate:self
cancelButtonTitle:nil
destructiveButtonTitle:nil
otherButtonTitles:nil];
theDatePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0.0, 44.0, 0.0, 0.0)];
theDatePicker.datePickerMode = UIDatePickerModeDate;
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setFormatterBehavior:NSDateFormatterBehavior10_4];
[dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]autorelease]];
[dateFormatter setDateFormat:@"dd MMM yyyy"];
//[dateFormatter setDateFormat:@"MM/dd/YYYY"];
//[theDatePicker release];
[theDatePicker addTarget:self action:@selector(dateChanged) forControlEvents:UIControlEventValueChanged];
pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
pickerToolbar.barStyle=UIBarStyleBlackOpaque;
[pickerToolbar sizeToFit];
NSMutableArray *barItems = [[NSMutableArray alloc] init];
UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(DatePickerDoneClick)];
[barItems addObject:flexSpace];
[pickerToolbar setItems:barItems animated:YES];
[pickerViewDate addSubview:pickerToolbar];
[pickerViewDate addSubview:theDatePicker];
[pickerViewDate showInView:self.view];
[pickerViewDate setBounds:CGRectMake(0,0,320, 464)];
}
-(IBAction)dateChanged{
NSDateFormatter *FormatDate = [[NSDateFormatter alloc] init];
[FormatDate setLocale: [[[NSLocale alloc]
initWithLocaleIdentifier:@"en_US"] autorelease]];
[FormatDate setDateFormat:@"MM/dd/YYYY"];
SelectedTextField.text = [FormatDate stringFromDate:[theDatePicker date]];
}
-(BOOL)closeDatePicker:(id)sender{
[pickerViewDate dismissWithClickedButtonIndex:0 animated:YES];
[pickerToolbar release];
[pickerViewDate release];
[SelectedTextField resignFirstResponder];
return YES;
}
-(IBAction)DatePickerDoneClick{
[self closeDatePicker:self];
tableview.frame=CGRectMake(0, 44, 320, 416);
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
return 1;
}
// returns the number of rows
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
return 30;
// return [pickerViewArray count];
}
Do the changes as per requirement. This is 100% running code almost used by me in similar application
根据要求进行更改。这是我在类似应用程序中几乎使用过的 100% 运行代码
hAPPY cODING...
快乐编码...
回答by lenhhoxung
This is a demo project for UIDatePicker with Cancel/Done buttons: https://github.com/lenhhoxung86/CustomDatePicker
这是一个带有取消/完成按钮的 UIDatePicker 演示项目：https: //github.com/lenhhoxung86/CustomDatePicker
回答by anatoliy_v
One more customisable UIToolbar and UIDatePicker project. Might be helpful: https://github.com/anatoliyv/SMDatePicker
另一个可自定义的 UIToolbar 和 UIDatePicker 项目。可能会有所帮助：https: //github.com/anatoliyv/SMDatePicker
