如何在点击iphone中的段控件上更改标签文本

Question

我在iphone应用程序中使用segmentedControl我想要的时候

是，否则

我还有一个标签我希望当选择YES时标签应该显示YES其他明智的

但它没有改变我的代码

  -(IBAction)segmentedControlIndexChanged{

   switch (self.segmentedControl.selectedSegmentIndex) {
    case 0:
        self.segmentLabel.text =@"YES";
        break;
    case 1:
        self.segmentLabel.text =@"NO";
        break;

    default:
        break;

}


   }

Answer 1

使用非常简单     的setTitle：forSegmentAtIndex：

所以代码看起来应该是

NSString *str;
switch (self.segmentedControl.selectedSegmentIndex) {
case 0: {
    str = @"YES";
    break;
}
case 1: {
    str = @"NO";
    break;
}
default:
    break;

[self.segmentedControll setTitle:str forSegmentAtIndex:self.segmentedControl.selectedSegmentIndex]

或更简单的版本

if (self.segmentedControl.selectedSegmentIndex == 0) {
    [self.segmentedControll setTitle:@"YES" forSegmentAtIndex:self.segmentedControl.selectedSegmentIndex]
}
else if (self.segmentedControl.selectedSegmentIndex == 1) {
    [self.segmentedControll setTitle:@"NO" forSegmentAtIndex:self.segmentedControl.selectedSegmentIndex]
}

Answer 2

查看图像并按照正确的布线（选择值更改选项）。

-(IBAction)valueChanged:(id)sender
{

if (self.segmentedControl.selectedSegmentIndex == 0) {
    [self.segmentedControll setTitle:@"YES" forSegmentAtIndex:self.segmentedControl.selectedSegmentIndex]
}
else if (self.segmentedControl.selectedSegmentIndex == 1) {
    [self.segmentedControll setTitle:@"NO" forSegmentAtIndex:self.segmentedControl.selectedSegmentIndex]
}

}