如何在 iOS 中创建一个简单的复选框？
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How to create a simple checkbox in iOS?
提问by Doom
Possible Duplicate:
Checkbox in IPhone application
可能重复：
iPhone 应用程序中的复选框
I want to create a simple checkbox with 2 values and save this, how can I make that?
我想创建一个带有 2 个值的简单复选框并保存它，我该怎么做？
Thanks.
谢谢。
回答by Gal Blank
Yeah, no checkbox for you in iOS (-:
是的，iOS 中没有您的复选框（-：
Here, this is what I did to create a checkbox:
在这里，这是我创建复选框的操作：
UIButton *checkbox;
BOOL checkBoxSelected;
checkbox = [[UIButton alloc] initWithFrame:CGRectMake(x,y,20,20)];
// 20x20 is the size of the checkbox that you want
// create 2 images sizes 20x20 , one empty square and
// another of the same square with the checkmark in it
// Create 2 UIImages with these new images, then:
[checkbox setBackgroundImage:[UIImage imageNamed:@"notselectedcheckbox.png"]
forState:UIControlStateNormal];
[checkbox setBackgroundImage:[UIImage imageNamed:@"selectedcheckbox.png"]
forState:UIControlStateSelected];
[checkbox setBackgroundImage:[UIImage imageNamed:@"selectedcheckbox.png"]
forState:UIControlStateHighlighted];
checkbox.adjustsImageWhenHighlighted=YES;
[checkbox addTarget:(nullable id) action:(nonnull SEL) forControlEvents:(UIControlEvents)];
[self.view addSubview:checkbox];
Now in the target method do the following:
现在在目标方法中执行以下操作：
-(void)checkboxSelected:(id)sender
{
checkBoxSelected = !checkBoxSelected; /* Toggle */
[checkbox setSelected:checkBoxSelected];
}
That's it!
就是这样！
回答by JustSid
On iOS there is the switch UI component instead of a checkbox, look into the UISwitchclass.
The property on(boolean) can be used to determine the state of the slider and about the saving of its state: That depends on how you save your other stuff already, its just saving a boolean value.
在 iOS 上有 switch UI 组件而不是复选框，查看UISwitch类。属性on(boolean) 可用于确定滑块的状态及其状态的保存：这取决于您已经保存其他内容的方式，它只是保存一个布尔值。
