3

在此处输入图像描述

我想在带有完成和取消按钮的pickerView顶部显示带有UIToolBar的UIPickerView。附加的是相同的屏幕截图。我在视图的底部也有标签栏控制器，我想在底部栏上显示pickerView这就是为什么我我在 actionsheet 中使用 uipickerView。现在我的问题是如何在 UIActionSheet 中添加的 cancelButton click 上关闭该 pickerView？

以下是显示 pickerView 的函数：

-(IBAction)setMile:(id)sender
   {
      menu = [[UIActionSheet alloc] initWithTitle:nil
                                                  delegate:self
                                         cancelButtonTitle:nil
                                    destructiveButtonTitle:nil
                                         otherButtonTitles:nil];
    // Add the picker
    UIPickerView *pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0,55,0,0)];
    pickerView.delegate = self;
pickerView.showsSelectionIndicator = YES;    // note this is default to NO

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

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


UIBarButtonItem *cancelBtn = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(setMileCancel:)];
[barItems addObject:cancelBtn];
[cancelBtn release];
cancelBtn=nil;

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

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


[pickerToolbar setItems:barItems animated:YES];
[barItems release];
barItems=nil;

[menu addSubview:pickerToolbar];
[menu addSubview:pickerView];
[menu showInView:self.view];
//[menu showFromTabBar:[[self tabBarController] tabBar]];  this code is not working
[menu setBounds:CGRectMake(0,0,320, 545)];
[pickerView release];
[menu release];
pickerView=nil;
menu=nil;
}

我在取消按钮单击时有以下代码

-(IBAction)setMileCancel:(id)sender
 {
   //[menu removeFromSuperview];
   [menu dismissWithClickedButtonIndex:0 animated:YES];
 }
4

3 回答 3

2 
 //   menu=nil;
 Please comment this line, then it will work
于 2012-11-17T04:16:06.780 回答
1

为什么要使用 aUIActionSheet来完成此操作？使a的UIPickerViewthe ，并使 the的the 。这样，您只需要在文本字段上关闭and ，而无需任何杂乱的代码！有关更多信息，请参阅UITextField 参考。希望有帮助！inputViewUITextFieldUIToolBarinputAccessoryViewUITextFieldbecome/resignFirstResponderUIPickerViewUIToolBar

于 2012-11-17T04:33:11.540 回答
0

我已经解决了这个问题。只需从上面的代码中删除以下两行：

[menu release];
menu=nil;
于 2012-11-17T04:54:39.130 回答