iOS应用程序的复选框控件

iOS应用程序的对象库中是否有复选框控件？我最近看到的是开关控件，它可以接受布尔值

您可以使用UIButton的选定状态，为不同设置不同的图像（或文本）（通过代码或界面生成器）：

在内部行动的润色中：

- (IBAction)buttonTouched:(id)sender
{
    button.selected = !button.selected;
    // add other logic
}

---

这是我用于屏幕上两个复选框的代码。我把它们放在屏幕上的两张图片的底部。我用UIControlEventTouchDown来调用CycBox的方法。这个方法与我的主视图控制器对话，在这里我决定答案是正确的还是不正确的。然后主视图控制器调用这个视图并告诉它将空白文本框更改为C。见鬼：

还是一个x

// Put the Checkboxes on the screen
UIImage *checkBox = [UIImage imageNamed:@"Checkbox"];

self.checkBoxLeft = [UIButton buttonWithType:UIButtonTypeCustom];
[self.checkBoxLeft setImage:checkBox forState:UIControlStateNormal];
[self.checkBoxLeft setFrame:checkBoxFrameLeft];
[self.checkBoxLeft addTarget:self 
                      action:@selector(checkBoxTapped:) 
            forControlEvents:UIControlEventTouchDown];

[self.checkBoxLeft setTitle:@"checkBoxLeft" forState:UIControlStateNormal];
self.checkBoxLeft.contentEdgeInsets = insets;
self.checkBoxLeft.showsTouchWhenHighlighted = NO; // Keeps it from turning gray

self.checkBoxRight = [UIButton buttonWithType:UIButtonTypeCustom];
[self.checkBoxRight setImage:checkBox forState:UIControlStateNormal];
[self.checkBoxRight setFrame:checkBoxFrameRight];
[self.checkBoxRight addTarget:self 
                       action:@selector(checkBoxTapped:) 
             forControlEvents:UIControlEventTouchDown];

[self.checkBoxRight setTitle:@"checkBoxRight" forState:UIControlStateNormal];
self.checkBoxRight.contentEdgeInsets = insets;
self.checkBoxRight.showsTouchWhenHighlighted = NO; // Keeps it from turning gray

- (void)checkBoxTapped:(UIButton *)buttonPressed {
    [[self delegate] checkBoxTapped:buttonPressed.currentTitle];
}

- (void)highlightCheckbox:(NSString *)checkboxToHighlight withHighlight:(NSString *)highlight {

    if ( [checkboxToHighlight isEqualToString:@"left"] ){
        [self.checkBoxLeft setImage:[UIImage imageNamed:highlight] forState:UIControlStateNormal];
    } else {
        [self.checkBoxRight setImage:[UIImage imageNamed:highlight] forState:UIControlStateNormal];
    }
}

---

//定义按钮的属性

声明未选中的图像

- (void)viewDidLoad
{
    [_checkboxButton setBackgroundImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
}

选中的图像

- (IBAction)buttonTapped:(id)sender
{
    if (_checkboxButton.selected == YES)
    {
        [_checkboxButton setBackgroundImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateSelected];
        _checkboxButton.selected = NO;
    }
    else
    {
        [_checkboxButton setBackgroundImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateNormal];
        _checkboxButton.selected = YES;
    }
}

---

UISegmentedControl可能对您有所帮助否复选框或单选按钮没有默认的UI控件，在这里，您必须使用两种不同的图像进行选中和未选中，并使用UIButton状态进行逻辑控制以进行选中/取消选中标记。将取消选中（正常状态）和选中（选定状态）的图像放入.Related：这是一个开源库，为它提供了实现。Anirudha-您可以设置背景图像，这可能是您所说的“不工作”。图像是按钮上的图像，与标签一样。背景图像通常用于更改整个按钮。

- (IBAction)buttonTapped:(id)sender
{
    if (_checkboxButton.selected == YES)
    {
        [_checkboxButton setBackgroundImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateSelected];
        _checkboxButton.selected = NO;
    }
    else
    {
        [_checkboxButton setBackgroundImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateNormal];
        _checkboxButton.selected = YES;
    }
}