작업 표에 제시된 UIPicker를 어떻게 해제합니까?

Question

나는 5 개 정적 세포와 테이블 뷰 컨트롤러가 하나는이 같은 UIPicker 호출

#pragma mark PickerView DataSource 

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView { 
    return 1; 
} 

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{ 
    return [self.cityNames count]; 
} 

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component { 
    return [self.cityNames objectAtIndex:row]; 
} 

#pragma mark PickerView Delegate 
-(void)presentNewPicker{ 
    UIActionSheet *aac = [[UIActionSheet alloc] initWithTitle:@"For which city?" 
                delegate:self 
              cancelButtonTitle:nil 
             destructiveButtonTitle:nil 
              otherButtonTitles:nil]; 


    self.pickrView = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0, 44.0, 0.0, 0.0)]; 
    self.pickrView.showsSelectionIndicator = YES; 
    self.pickrView.dataSource = self; 
    self.pickrView.delegate = self; 

    self.cityNames = [[NSArray alloc] initWithObjects: @"Akron", @"Indie", @"Springfield", @"Loria", @"Merida", nil]; 


    UIToolbar *pickerDateToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)]; 
    pickerDateToolbar.barStyle = UIBarStyleBlackOpaque; 
    [pickerDateToolbar sizeToFit]; 

    NSMutableArray *barItems = [[NSMutableArray alloc] init]; 

    UIBarButtonItem *flexSpace = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil]; 
    [barItems addObject:flexSpace]; 

    UIBarButtonItem *doneBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(pickerDoneClick)]; 
    [barItems addObject:doneBtn]; 

    [pickerDateToolbar setItems:barItems animated:YES]; 

    [aac addSubview:pickerDateToolbar]; 
    [aac addSubview:self.pickrView]; 
    [aac showInView:self.view]; 
    [aac setBounds:CGRectMake(0,0,320, 464)]; 
} 

-(void) dismissActionSheet:(id)sender { 
NSLog(@"dismissActionSheet"); 

UIActionSheet *actionSheet = (UIActionSheet *) ??? how do i get action sheet? :-); 
[actionSheet dismissWithClickedButtonIndex:0 animated:YES]; 
} 

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{ 

    self.myCity.text = [self.cityNames objectAtIndex:row]; 
    NSLog(@"city %@", self.myCity.text); 
} 

UIPicker이 제시하지만 난 완료 버튼을 클릭하면,하지만 어떻게 내가 지금 기각 할을? 또한, 도시는 null을 기록하고 있으며, 왜 그 도시와 함께 picker를 init'd했는지 확신 할 수 없으며, 한번 picker에 나타납니다.

Answer 1

스토어 속성이나 변수 예를

@property (nonatomic) UIActionSheet *actionSheet; 

하고

UIActionSheet *aac 

의

self.actionSheet 

대신 액션 시트 사용을 만들 때 다음

전화에 UIActionSheet에 대한 참조 (210)

Answer 2

UIActionSheet *aac; 

[self.actionSheeet dismissWithClickedButtonIndex:0 animated:YES]; 

내 첫 본능이 글로벌