Create Checkbox using Storyboard in Xcode

Question

我是Objective-C的新手所以我主要使用Storyboard，有人请告诉我如何在iOS中使用Xcode创建一个checkbox 。

Answer 1

UISwitch is the standard control used in IOS applications for making binary choices but if you want to use checkbox you can create a UIButton

@property (weak, nonatomic) IBOutlet UIButton *CheckBox;
- (IBAction)CheckBoxClick:(id)sender

and change its background image on click event of UIButton

- (IBAction)CheckBoxClick:(id)sender {
    if(!checked){
        [_CheckBox setImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateNormal];
        checked = YES;
    }
    else if(checked){
        [_CheckBox setImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
        checked = NO;
    }
}

also there are more detailed answers to this question at

How to create a simple checkbox in iOS?

and if you dont want to use images you can check the following

Checkbox in iOS application

Answer 2

UISwitch is the standard control used in iOS for indicating an on/off, selected/unselected state. Why not use that?

Answer 3

CheckBox is not available in object library . You can use third party library for that purpose or you can create it by your self.

There is the working code for checkbox.

create a class level variable and property of button in @inteface

@interface testViewController (){
    BOOL checkBoxSelected;
}
@property (weak, nonatomic) IBOutlet UIButton *checkBox;

@end

in viewdidload set images for the button states.

 [_checkBox setBackgroundImage:[UIImage imageNamed:@"checkBoxUnChecked.png"]
                   forState:UIControlStateNormal];
    [_checkBox setBackgroundImage:[UIImage imageNamed:@"checkBoxChecked.png"]
                        forState:UIControlStateSelected];

and after create a button action in that button Action.

checkBoxSelected = !checkBoxSelected; /* Toggle */
    [_checkBox setSelected:checkBoxSelected];

Hope it helps

Answer 4

1) Create Prototype cell in UITableView.

2) Add one button inside the cell and set button style to Custom.

3) Set the image for checkbox.

Answer 5

ios language doesn't use checkbox controller. but you are use checkbox that you are inport two image select & unselect

Step 1> Create button and set image.

Step 2> Create button touch object method and put if condition for check & uncheck. for example:

- (IBAction)btnLogin:(id)sender {
   UIButton *btn = (UIButton *)sender;
   if (btn.tag == 0) {
       btn.tag = 1;
      //set image checked.
   }
   else{
       btn.tag = 0;
      //set image unchecked.
   }
 }

Answer 6

You shouldn't need to subclass the UIButton class. By design, Objective-C favors composition over inheritance.

UIButton is a subclass of UIControl, which has a selected property. You can use this property to toggle the on/off behaviour of a checkbox, just the same way a UISwitch does.

You can attach an action to the button's touched up inside event, and perform the toggling in there, something like this:

// when you setup your button, set an image for the selected and normal states

[myCheckBoxButton setImage:nonCheckedImage forState:UIControlStateSelected];
[myCheckBoxButton setImage:nonCheckedImage forState:UIControlStateNormal];

- (void)myCheckboxToggle:(id)sender
{
    myCheckboxButton.selected = !myCheckboxButton.selected; // toggle the selected property, just a simple BOOL
}