Ios 如何在选择日期后禁用UIDatePicker?
Iam使用以下UIDatePicker代码,无论Iam选择的日期显示在标签中。但我需要在选择日期后关闭选择器。这可能吗?请建议我 我正在使用以下代码:Ios 如何在选择日期后禁用UIDatePicker?,ios,xcode,ipad,uidatepicker,Ios,Xcode,Ipad,Uidatepicker,Iam使用以下UIDatePicker代码,无论Iam选择的日期显示在标签中。但我需要在选择日期后关闭选择器。这可能吗?请建议我 我正在使用以下代码: - (void)viewDidLoad { [super viewDidLoad]; //Create label label = [[UILabel alloc] init]; label.frame = CGRectMake(10, 10, 300, 40); label.textAlignment
- (void)viewDidLoad {
[super viewDidLoad];
//Create label
label = [[UILabel alloc] init];
label.frame = CGRectMake(10, 10, 300, 40);
label.textAlignment = UITextAlignmentCenter;
//Use NSDateFormatter to write out the date in a friendly format
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
label.text = [NSString stringWithFormat:@"%@",
[df stringFromDate:[NSDate date]]];
[df release];
[self.view addSubview:label];
[label release];
// Initialization code
datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 250, 325, 250)];
datePicker.datePickerMode = UIDatePickerModeDate;
datePicker.hidden = NO;
datePicker.date = [NSDate date];
[datePicker addTarget:self
action:@selector(changeDateInLabel:)
forControlEvents:UIControlEventValueChanged];
[self.view addSubview:datePicker];
[datePicker release];
}
- (void)changeDateInLabel:(id)sender{
//Use NSDateFormatter to write out the date in a friendly format
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
label.text = [NSString stringWithFormat:@"%@",
[df stringFromDate:datePicker.date]];
[df release];
}
您必须使用“单击背景”按钮从视图中隐藏日期选择器
-(IBAction)backGroundClick:(id)sender
{
[datePicker removeFromSuperview];
}
将userInteraction设置为NO可能比从superview中删除要好
您需要“完成”按钮,就像用户准备完成日期选择一样
-(IBAction)buttonDoneClick:(id)sender
{
[datePicker setUserInteractionEnabled:NO];
}
下面的代码将起作用。
点击日期标签将启用日期选择器,如下所示:
- (void)viewDidLoad
{
[super viewDidLoad];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]init];
tap.numberOfTapsRequired = 1;
label = [[UILabel alloc] init];
label.frame = CGRectMake(10, 20, 300, 40);
label.userInteractionEnabled = YES;
label.textAlignment = NSTextAlignmentCenter;
label.backgroundColor = [UIColor redColor];
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
label.text = [NSString stringWithFormat:@"%@",
[df stringFromDate:[NSDate date]]];
[label addGestureRecognizer:tap];
[tap addTarget:self action:@selector(datePickerView)];
[self.view addSubview:label];
}
- (void)datePickerView
{
// Initialization code
datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 250, 325, 250)];
datePicker.datePickerMode = UIDatePickerModeDate;
datePicker.hidden = NO;
datePicker.date = [NSDate date];
[self.view addSubview:datePicker];
[datePicker addTarget:self
action:@selector(changeDateInLabel:)
forControlEvents:UIControlEventValueChanged];
}
- (void)changeDateInLabel:(id)sender{
//Use NSDateFormatter to write out the date in a friendly format
NSDateFormatter *df = [[NSDateFormatter alloc] init];
df.dateStyle = NSDateFormatterMediumStyle;
label.text = [NSString stringWithFormat:@"%@",
[df stringFromDate:datePicker.date]];
}
使用以下方法,Picker将退出在Picker外部攻丝的视图
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
[datePicker removeFromSuperview];
}
我建议您这样做: 使用带有“完成”按钮和“取消”按钮的工具栏 这只是一个快速实现,可能会有所帮助
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(0, 100, 320, 44)];
textField.text = @"Date";
[self.view addSubview:textField];
UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
toolbar.barStyle = UIBarStyleBlackTranslucent;
UIBarButtonItem *itemDone = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:textField action:@selector(resignFirstResponder)];
UIBarButtonItem *itemSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
toolbar.items = @[itemSpace,itemDone];
UIDatePicker *datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 0, 320, 216)];
datePicker.minimumDate = [NSDate date];
datePicker.date = [NSDate date];
[datePicker addTarget:self action:@selector(didChangePickerDate:) forControlEvents:UIControlEventValueChanged];
textField.inputAccessoryView = toolbar;
textField.inputView = datePicker;
[textField becomeFirstResponder];
你看到这个了吗?。。