Question

如何让滑块逐步浏览阵列？现在他们被设置为测试只是为了显示数字。

    @implementation ViewController

    - (IBAction)shapeSlider:(id)sender {
    UISlider *slider = (UISlider *)sender;
    float val = slider.value;
    self.shapeLabel.text = [NSString stringWithFormat:@"%f",val];
}
    - (IBAction)colorSlider:(id)sender {
    UISlider *slider2 = (UISlider *)sender;
    float val = slider2.value;
    self.colorLabel.text = [NSString stringWithFormat:@"%f",val];
}
  - (IBAction)cutSlider:(id)sender {
    UISlider *slider3 = (UISlider *)sender;
    float val = slider3.value;
    self.cutLabel.text = [NSString stringWithFormat:@"%f",val];
}
  - (IBAction)PriceSlider:(id)sender {
    UISlider *slider4 = (UISlider *)sender;
    NSInteger val = lround(slider4.value);
    self.priceLabel.text = [NSString stringWithFormat:@"$%d",val];
}

    - (BOOL)textFieldShouldReturn:(UITextField *)textField

{
    [[self zipCode] resignFirstResponder];
    return YES;
}

    -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {

    [[self view] endEditing:YES];

}
    - (void)viewDidLoad
{
[    super viewDidLoad];


    // set price slider values
    self.priceSlider.minimumValue = 1000;
    self.priceSlider.maximumValue = 200000;

    // create Arrays

    self.shapes = @[@"Round", @"Princess", @"Emerald", @"Asscher", @"Marquise", @"Oval",         @"Radiant", @"Pear", @"Heart", @"Cushion"];

    self.colors = @[@"J", @"I", @"H", @"G", @"F", @"E", @"D"];

我尝试了很多东西，但似乎很多帖子都很旧，Xcode 5不接受任何恶作剧。

我还需要使用用户选择的任何内容并使用提交按钮发布到电子邮件。如果没有用户在他们的iOS设备上设置邮件，这可能吗？

Answer 1

根据我在stackoverflow.com上找到的不同答案，以下代码完美运行

 - (IBAction)shapeSlider:(id)sender {
     UISlider *slider = (UISlider *)sender;
     NSInteger sliderValue = (NSInteger)slider.value;
     self.shapeLabel.text = [NSString stringWithFormat:@"%@",[_shapes        objectAtIndex:sliderValue]];

基本上，滑块必须具有最大值和最小值以及其中具有相同字符串最大值的Array。

如何通过UISliders使用数组传递文本字符串？

1 个答案: