UIDatePicker不隱藏

Question

我已經創建了一個UIDatePicker編程方式，並從一個方法，我將選定的值設置爲一個文本字段。但是價值並沒有進入文本框，並且選擇器沒有隱藏起來。誰能幫我？我的代碼是在這裏

datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 245, 320, 270)]; 
[self.view addSubview:datePicker]; 
datePicker.hidden=YES; 
[datePicker release]; 
datePicker.datePickerMode = UIDatePickerModeDate; 
NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init]; 
[outputFormatter setDateFormat:@"yyyy:MMMM:dd"]; 
self.dobtxt.text = [outputFormatter stringFromDate:self.datePicker.date]; 
[outputFormatter release]; 
[DoneBtnDate setBackgroundImage: [UIImage imageNamed: @"OTdone.png"] forState:UIControlStateNormal]; 
PickerDoneviewDate=[[UIView alloc]initWithFrame:CGRectMake(0,210, 320, 35)]; 
PickerDoneviewDate.backgroundColor=[UIColor clearColor]; 
PickerDoneviewDate.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:@"MFC_tab_01.png"]]; 
DoneBtnDate = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
[DoneBtnDate addTarget:self action:@selector(DatePickerDone:)forControlEvents:UIControlEventTouchDown]; 
DoneBtnDate.frame = CGRectMake(245,5, 70, 30); 
[PickerDoneviewDate addSubview:DoneBtnDate]; 
[self.view addSubview:PickerDoneviewDate]; 
PickerDoneviewDate.hidden=YES; 
} 

    -(void)DatePickerDone:(id)sender 
{ 
NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init]; 
[outputFormatter setDateFormat:@"yyyy:MMMM:dd"]; 

self.dobtxt.text = [outputFormatter stringFromDate:self.datePicker.date]; 
[datePicker release]; 
[datePicker setHidden:TRUE]; 

PickerDoneviewDate.hidden=YES; 
[outputFormatter release]; 
} 

添加文本字段

dobtxt = [[UITextField alloc] initWithFrame:CGRectMake(150, 120, 133, 26)]; 
    dobtxt.borderStyle = UITextBorderStyleNone; 
    dobtxt.background=[UIImage imageNamed: @"textbox_small.png"]; 
    dobtxt.font = [UIFont fontWithName:@"Arial" size:13]; 
    dobtxt.delegate = self; 
    dobtxt.userInteractionEnabled=YES; 
    dobtxt.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter; 
    [scroll addSubview:dobtxt]; 

Answer 1

日期選擇器是屬性代碼，它會自動釋放。 Plz刪除

[datePicker release]; 


self.datePicker = [[[UIDatePicker alloc] initWithFrame:CGRectMake(0, 245, 320, 270)] autorelease]; 
[self.view addSubview:datePicker]; 
self.datePicker.hidden=YES; 
//[datePicker release]; 
datePicker.datePickerMode = UIDatePickerModeDate; 
NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init]; 
[outputFormatter setDateFormat:@"yyyy:MMMM:dd"]; 
self.dobtxt.text = [outputFormatter stringFromDate:self.datePicker.date]; 
[outputFormatter release]; 
[DoneBtnDate setBackgroundImage: [UIImage imageNamed: @"OTdone.png"] forState:UIControlStateNormal]; 
PickerDoneviewDate=[[UIView alloc]initWithFrame:CGRectMake(0,210, 320, 35)]; 
PickerDoneviewDate.backgroundColor=[UIColor clearColor]; 
PickerDoneviewDate.backgroundColor=[UIColor colorWithPatternImage:[UIImage imageNamed:@"MFC_tab_01.png"]]; 
DoneBtnDate = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 
[DoneBtnDate addTarget:self action:@selector(DatePickerDone:)forControlEvents:UIControlEventTouchDown]; 
DoneBtnDate.frame = CGRectMake(245,5, 70, 30); 
[PickerDoneviewDate addSubview:DoneBtnDate]; 
[self.view addSubview:PickerDoneviewDate]; 
self.PickerDoneviewDate.hidden=YES; 
} 

-(void)DatePickerDone:(id)sender 
{ 
NSDateFormatter *outputFormatter = [[NSDateFormatter alloc] init]; 
[outputFormatter setDateFormat:@"yyyy:MMMM:dd"]; 

self.dobtxt.text = [outputFormatter stringFromDate:self.datePicker.date]; 
//[datePicker release]; 
[datePicker setHidden:TRUE]; 

PickerDoneviewDate.hidden=YES; 
[outputFormatter release]; 
}