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我需要在我的文本框中添加选择器，但不知道如何让它们工作。我浏览了许多教程，向您展示了如何从头开始，如果您有一个现有的应用程序并且您想要添加功能，那么这有点没用，在大多数情况下它们并不是很有帮助。

我正在寻找与下图非常相似的东西。下面显示的显然是UIDatepicker，但理想情况下

我正在寻找“地点”、“期限”和“门”的自定义选择器。

所以现在，跳过 UIDatepicker 项目，并专注于自定义选择器项目。

还有一件事，这是 iOS7，我正在使用故事板和arc！

弹出选择器视图

我遇到了这个（http://www.youtube.com/watch?v=BtmQp5aP304），这真的很有帮助，但它又是从头开始。我不知道如何在我现有的代码中实现这一点。所以我正在寻找一个演练，一个有人可以指点我的教程让我开始。

stackoverflow上有这个-> 如何在文本文件单击时弹出datePicker并在编辑完成时消失

这给了我一些想法，但不完全是我想要的，尝试了这些建议并最终得到比其他任何东西更多的错误。

谢谢。

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3 回答 3

4 
 @interface ViewController ()<UIPickerViewDataSource,UIPickerViewDelegate>

@implementation ViewController
{
  UIPopoverController *popoverController;
      NSString *currentPick;
    ….
}
.
.
.
-(void)makePicker{

 UIPickerView *picker = [[[UIPickerView alloc]init]autorelease];
        picker.frame = CGRectMake(0, 50, 320, 1000);
        picker.showsSelectionIndicator = YES;
        picker.delegate = self;
 UIButton *done = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [done setBackgroundImage:[UIImage imageNamed:@"Save.png"] forState:UIControlStateNormal];
        [done setFrame:CGRectMake(260, 10, 50, 30)];
        [done addTarget:self action:@selector(doneButton:) forControlEvents:UIControlEventTouchUpInside];
 UIButton *cancel = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [cancel setBackgroundImage:[UIImage imageNamed:@"Cancel.png"] forState:UIControlStateNormal];
        [cancel setFrame:CGRectMake(10, 10, 50, 30)];
        [cancel addTarget:self action:@selector(cancelButton:) forControlEvents:UIControlEventTouchUpInside];


 if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
    {
        UIActionSheet *pickerAction = [[[UIActionSheet alloc]initWithTitle:[cells objectAtIndex:indexPath.section] delegate:self cancelButtonTitle:nil destructiveButtonTitle:Nil otherButtonTitles:nil]autorelease];
                    [pickerAction addSubview:picker];
        [pickerAction addSubview:done];
        [pickerAction addSubview:cancel];
        [pickerAction showInView:self.view];
        pickerAction.frame = CGRectMake(0,[UIScreen mainScreen].bounds.size.height - 330,320, 350);
    }else
    {
        UIViewController* popoverContent = [[UIViewController alloc] init];
        UIView* popoverView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 300)];
        [popoverView addSubview:picker];
        [popoverView addSubview:done];
        [popoverView addSubview:cancel];
        [popoverContent.view addSubview:popoverView];
        popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverContent];
        [popoverController presentPopoverFromRect:<your frame> inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
        popoverContent.contentSizeForViewInPopover = CGSizeMake(320, 260);
        [popoverView release];
        [popoverContent release];

    }
}
.
.
.

// mainArray here is a NSArray of several arrays, these arrays contain the titles for different selections… e.g. @[fontArray,colourArray,nameArray]

-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
    return [[mainArray objectAtIndex:clickedAt] count];
}

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

-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
 return [[mainArray objectAtIndex:clickedAt] objectAtIndex:row];
}
-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
   currentPick = [[mainArray objectAtIndex:clickedAt] objectAtIndex:row];
}


- (void)doneButton:(UIButton *)button
{
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
{
    UIActionSheet *as = (UIActionSheet *)[button superview];
    [as dismissWithClickedButtonIndex:0 animated:YES];
}
else
    [popoverController dismissPopoverAnimated:YES];

// save your selections here using currentPick object
}

- (void)cancelButton:(UIButton *)button
{
if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
{
    UIActionSheet *as = (UIActionSheet *)[button superview];
    [as dismissWithClickedButtonIndex:0 animated:YES];
}
else
    [popoverController dismissPopoverAnimated:YES];
}

享受你的选择器；）

于 2013-10-24T11:24:19.687 回答
1

检查这一点，在 .xib 中制作一个全屏UIView、一个UIImageView、一个UIPickerView和两个UIButton（保存和取消），然后在您的 .h 文件中制作它们的出口：

@property (retain, nonatomic) IBOutlet UIView *bg_view;
@property (retain, nonatomic) IBOutlet UIImageView *bg_customImageView;
@property (retain, nonatomic) IBOutlet UIPickerView *myPicker;
- (IBAction)cancelOut:(UIButton *)sender;
- (IBAction)saveOut:(UIButton *)sender;
@property (retain, nonatomic) IBOutlet UIButton *saveButton;
@property (retain, nonatomic) IBOutlet UIButton *cancelButton;

然后在 .m 文件中：

-(void)customPickerShow
{
[self.bg_view setBackgroundColor:[UIColor colorWithRed:0.3 green:0.25 blue:0.05 alpha:0.5]];
[self.bg_view setHidden:NO];
self.navigationController.toolbarHidden = YES;
self.navigationController.navigationBarHidden = YES;
[self showMyPicker];
}

-(void)showMyPicker
{
[self.myPicker reloadAllComponents];
[self animatePicker];
}

-(void)animatePicker
{
self.cancelButton.frame = CGRectMake((framewidth/2) - 130, frameheight, 70, 1);
self.saveButton.frame = CGRectMake((framewidth/2) + 60, frameheight, 70, 1);
self.bg_customImageView.frame = CGRectMake((framewidth/2) - 140, frameheight, 280, 1);
[UIView beginAnimations:Nil context:Nil];
[UIView setAnimationDuration:0.3];
[UIView setAnimationDelegate:self];
self.bg_customImageView.frame = CGRectMake((framewidth/2) - 150, frameheight - 230, 300, 300);
self.cancelButton.frame = CGRectMake((framewidth/2) - 130, frameheight - 220, 50, 50);
self.saveButton.frame = CGRectMake((framewidth/2) + 80, frameheight - 220, 50, 50);
[UIView commitAnimations];
}


- (IBAction)cancelOut:(UIButton *)sender {
self.navigationController.navigationBarHidden = NO;
self.navigationController.toolbarHidden = NO;
[self.bg_view setHidden:YES];
}

- (IBAction)saveOut:(UIButton *)sender {

// save here your selections

self.navigationController.navigationBarHidden = NO;
self.navigationController.toolbarHidden = NO;
[self.bg_view setHidden:YES];
}

称之为[self customPickerShow]; 使其工作的功能..

这看起来像带有选择器和按钮的操作表。您可以使用您选择的背景图像和您在 animatePicker 函数中选择的框架进行自定义

不要忘记将此 bg_view 放在其他视图的顶部并默认设置为隐藏

于 2013-10-28T05:59:58.897 回答
0

纯粹使用 UIStoryboard 可能无法解决项目，或者不是最好的方法。这是我的解决方案。1) 创建一个 CustomPicker 2) 定义您的数据源和委托 3) 将 CustomPicker 附加到目标 TextField 的 inputView。4）您可以在委托方法中设置它 -(Bool)textFieldShouldBeginEditing:(UITextField *)textField

在这种方法中，我们通过编码（而不是通过 UIStoryboard）来添加 Picker。

我有这个演示项目来展示这个目的。

于 2014-03-12T15:40:04.213 回答