我有一个日期选择器。我想让用户在“Von”文本字段(明天上午9点开始)中选择日期和时间,然后直到textfield“bis”(1.5小时后开始)。UIDatePicker与2个文本框(从/直到日期)不能设置正确的日期在“直到”文本域
一切工作正常。但是当我点击“冯”文本框。我的日期选择器为自己设定了正确的时间。
下面是一些截图: from textfield,until textfield
viewDidLoad中:
NSDate *today = [NSDate date];
NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
[gregorian setLocale:[NSLocale currentLocale]];
NSDateComponents *nowComponents = [gregorian components:NSYearCalendarUnit|NSMonthCalendarUnit| NSWeekdayCalendarUnit|NSDayCalendarUnit|NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit fromDate:today];
[nowComponents setWeek: [nowComponents week]];
[nowComponents setDay:[nowComponents day]+1];
[nowComponents setHour:9];
[nowComponents setMinute:0];
[nowComponents setSecond:0];
today = [gregorian dateFromComponents:nowComponents];
NSDate *tomorrowat9am = [gregorian dateFromComponents:nowComponents];
//DatePicker wird erstellt
self.thePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 152, 325, 300)];
self.thePicker.datePickerMode = UIDatePickerModeDateAndTime;
[thePicker addTarget:self action:@selector(dateChanged) forControlEvents:UIControlEventValueChanged];
//starts from tomorrow at 9 am
NSDate *pickereinstelldate= tomorrowat9am;
[self.thePicker setDate:pickereinstelldate];
//set the right format
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"dd.MM.yyyy HH:mm"];
NSString *datum =[dateFormatter stringFromDate:self.thePicker.date];
//set the date at textfield "bis" to 1.5 hours later
NSDate *neuesdatum = [beginningOfWeek dateByAddingTimeInterval:3600*1.5]; NSString *neuesd = [dateFormatter stringFromDate:neuesdatum];
//set the textfield with the new date
tfVon.text=datum;
tfBis.text=neuesd;
[self.view addSubview:thePicker];
self.thePicker.hidden=YES;
tfVon.inputView=thePicker;
tfBis.inputView=thePicker;
}
这里是动作:
-(IBAction)dateChanged
{
self.date = [thePicker date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"dd.MM.yyyy HH:mm"];
NSString *datum =[dateFormatter stringFromDate:self.date];
NSDate *neuesdatum = [date dateByAddingTimeInterval:3600*1.5];
NSString *neuesd = [dateFormatter stringFromDate:neuesdatum];
//when i click on "Von" textfield
if (dateBOOL==YES)
{
tfVon.text=datum;
tfBis.text=neuesd;
}
//when i click on "bis" textfield
if (dateBOOL==NO) {
tfBis.text=neuesd;
}
}
这里是我我datebool设置为NO:
-(BOOL)textFieldShouldBeginEditing:(UITextField *)textField
{
if (textField==tfVon)
{
dateBOOL=YES;
self.thePicker.hidden=NO;
return YES;
}
if (textField==tfBis)
{
dateBOOL=NO;
self.thePicker.hidden=NO;
return YES;
}
}
return YES;
}
不清楚的问题。请说清楚 – Hiren 2012-03-23 10:11:47
您什么时候显示日期选择器?你在哪里设置'dateBOOL'为'NO'?你可以发布一些代码吗? – sch 2012-03-23 10:34:16
当我选择textxfield(我更新了我的代码)时,显示我的日期选择器。在textfield中的记事本应该被限制为 – 2012-03-23 12:52:10