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UIActionSheet在我的应用程序中，当按下按钮时UIPickerView，我将在UIToolBar其中启动。它通过使用以下代码完美地工作。我正在尝试获取选择器值并将该值设置为被调用按钮，但我找不到它的确切解决方案。

- (IBAction)showPicker:(id)sender {

 actionSheet = [[UIActionSheet alloc] initWithTitle:nil 
                                                         delegate:self
                                                cancelButtonTitle:nil
                                           destructiveButtonTitle:nil
                                                otherButtonTitles:nil];//as we want to display a subview we won't be using the default buttons but rather we're need to create a toolbar to display the buttons on 

[actionSheet setActionSheetStyle:UIActionSheetStyleBlackTranslucent];

CGRect pickerFrame = CGRectMake(0, 40, 0, 0);

pickerView = [[UIPickerView     alloc] initWithFrame:pickerFrame];
pickerView.showsSelectionIndicator = YES;
pickerView.dataSource = self;
pickerView.delegate = self;

[actionSheet addSubview:pickerView];
//[pickerView release];     

pickerToolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
pickerToolbar.barStyle = UIBarStyleBlackOpaque;
[pickerToolbar 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(doneButtonPressed:)];  
[barItems addObject:doneBtn];  

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


[pickerToolbar setItems:barItems animated:YES];  

[actionSheet addSubview:pickerToolbar];  

[actionSheet addSubview:pickerView];  

[actionSheet showInView:self.view];  

[actionSheet setBounds:CGRectMake(0, 0, 320, 485)];

}

当按下工具栏中的完成按钮时，它将调用此方法

-(void)doneButtonPressed:(id)sender{  
//Do something here here with the value selected using [pickerView date] to get that value   
[actionSheet dismissWithClickedButtonIndex:1 animated:YES];   
[pickerView release];
[pickerToolbar release];
[actionSheet release];     
}

这是我的问题

如何从操作表中获取选择器值？

如何将该值设置为按钮？

谢谢你们的帮助

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2 回答 2

1

只需在您的 .h 或 .m 中创建一个 ivar 并将其分配[pickerView date]给 ivar，您就可以从 ActionSheet 中获取值。

快乐编码:)

编辑

在您的-(void)doneButtonPressed:(id)sender方法中只需输入这行代码

selected = [pickerView date];

并且selected是NSDate在 .h 中声明的类型 ivar，如下所示

@property (strong, nonatomic) NSDate *selected;

并且还必须为 datePicker 声明一个属性

@property (strong, nonatomic) UIDatePicker *pickerView;

并在 .m 中合成如下

@synthesize pickerView;
@synthesize selected;

快乐编码:)

编辑 1

对于自定义pickerView

（我假设 pickerView 的所有委托和数据源都已定义和声明）

要从自定义选择器中获取选定的值，必须使用下面提到的代码

NSInteger row = [singlePicker selectedRowInComponent:0];
NSString *selected = [pickerData objectAtIndex:row];

singlePicker= pickerView 并pickerData用作NSArraypickerView 的数据源

愿这将帮助您解决您的问题。

快乐编码:)

于 2012-08-01T10:57:51.590 回答
1

假设 pickerView 数据源只有一个组件，您可以使用以下方法获取所选行：

NSInteger row = [pickerView selectedRowInComponent:0];
于 2012-08-01T11:59:03.213 回答