我有一个具有5个静态单元格的表视图控制器,其中一个这样调用UIPicker:
#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);
}
出现了UIPicker,但是当我单击“完成”按钮时,如何立即将其关闭?另外,城市记录的是空值,我不确定为什么会这样,因为我与这些城市一起启动了选择器,并且一旦出现,它们便会出现在选择器中。
最佳答案
将对UIActionSheet的引用存储在属性或实例变量中
@property (nonatomic) UIActionSheet *actionSheet;
当您创建操作表时,请使用
self.actionSheet
代替
UIActionSheet *aac
然后打电话
[self.actionSheeet dismissWithClickedButtonIndex:0 animated:YES];
关于ios - 如何解散操作表中显示的UIPicker?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/17893927/