在iPhone的选择器内的按钮

Question

我想开发一个应用程序，我想以横向方式制作选择器。或者以这种方式调整数组。

如下图所示： -

我有这种观点。它完美地工作这是我想要的功能。但我怎么能保持这样的图像（橙色指针在选定的数字和圆形的矩形图像下橙色指针）。 http://isujith.wordpress.com/2009/03/17/horizontal-uipickerview/ 请指导我如何做到这一点。

以上问题的解决方案是： -

self.view.backgroundColor = [UIColor blackColor];
    CGFloat width = 200.0f;
    CGFloat x = (self.view.frame.size.width - width) / 2.0f;
    CGRect tmpFrame = CGRectMake(x, 150.0f, width, 40.0f);
    pickerView = [[V8HorizontalPickerView alloc] initWithFrame:tmpFrame];
    pickerView.backgroundColor   = [UIColor darkGrayColor];
    pickerView.selectedTextColor = [UIColor whiteColor];
    pickerView.textColor   = [UIColor grayColor];
    pickerView.delegate    = self;
    pickerView.dataSource  = self;
    pickerView.elementFont = [UIFont boldSystemFontOfSize:14.0f];
    pickerView.selectionPoint = CGPointMake(60, 0);

    // add carat or other view to indicate selected element
    UIImageView *indicator = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"indicator"]];
    pickerView.selectionIndicatorView = indicator;
//  pickerView.indicatorPosition = V8HorizontalPickerIndicatorTop; // specify indicator's location
    [indicator release];

    // add gradient images to left and right of view if desired
//  UIImageView *leftFade = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"left_fade"]];
//  pickerView.leftEdgeView = leftFade;
//  [leftFade release];
//
//  UIImageView *rightFade = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"right_fade"]];
//  pickerView.rightEdgeView = rightFade;
//  [rightFade release];

    [self.view addSubview:pickerView];

    self.nextButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    tmpFrame = CGRectMake(x, 225.0f, width, 50.0f);
    nextButton.frame = tmpFrame;
    [nextButton addTarget:self
                   action:@selector(nextButtonClicked:)
         forControlEvents:UIControlEventTouchUpInside];
    [nextButton setTitle:@"Center Element 0" forState:UIControlStateNormal];
    nextButton.titleLabel.textColor = [UIColor blackColor];
    [self.view addSubview:nextButton];

    self.reloadButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    tmpFrame = CGRectMake(x, 300, width, 50.0f);
    reloadButton.frame = tmpFrame;
    [reloadButton addTarget:self
                     action:@selector(reloadButtonClicked:)
           forControlEvents:UIControlEventTouchUpInside];
    [reloadButton setTitle:@"Reload Data" forState:UIControlStateNormal];
    [self.view addSubview:reloadButton];

    tmpFrame = CGRectMake(x, 375, width, 50.0f);
    infoLabel = [[UILabel alloc] initWithFrame:tmpFrame];
    infoLabel.backgroundColor = [UIColor blackColor];
    infoLabel.textColor = [UIColor whiteColor];
    infoLabel.textAlignment = UITextAlignmentCenter;
    [self.view addSubview:infoLabel];

这将与我合作并提供此类型的选择器： -

Answer 1

您可能无法使用链接中的文章使用的标准选择器执行此操作。您无法轻易更改选择器显示其选择的方式。您需要自己完全编写此组件。