如何检查和取消选中ios中的按钮

Question

我是iOS的初学者，在我的项目中我已经为用户“检查”和“取消选中”按钮插入了“3”按钮，如下图所示..

在这里，我的主要要求是当我点击“选中”按钮，然后它应该是“未选中”，当我点击“未选中”按钮时，它应该被“检查”，如下图所示..

剩下的两个按钮必须“未选中”，为此，我写了下面的代码，但这个过程太长了。任何人都可以解释简单和简短的过程

我的代码： -

 @interface ViewController ()
    {
        int check1;
        int check2;
        int check3;
        
        UIButton * button1;
        UIButton * button2;
        UIButton * button3;
    }
    
        
    @end
    
        
    @implementation ViewController
    
        




 - (void)viewDidLoad {
        [super viewDidLoad];
        
        check1 = 0;
        check2 = 0;
        check3 = 0;
        
        button1 = [UIButton buttonWithType:UIButtonTypeCustom];
        [button1 addTarget:self
                   action:@selector(aMethod1:)
         forControlEvents:UIControlEventTouchUpInside];
        button1.frame = CGRectMake(10.0, 100.0, 30.0, 30.0);
        UIImage *btnImage1 = [UIImage imageNamed:@"uncheck.png"];
        [button1 setImage:btnImage1 forState:UIControlStateNormal];
        [self.view addSubview:button1];
        
        button2 = [UIButton buttonWithType:UIButtonTypeCustom];
        [button2 addTarget:self
                    action:@selector(aMethod2:)
          forControlEvents:UIControlEventTouchUpInside];
        button2.frame = CGRectMake(50.0, 100.0, 30.0, 30.0);
        UIImage *btnImage2 = [UIImage imageNamed:@"uncheck.png"];
        [button2 setImage:btnImage2 forState:UIControlStateNormal];
        [self.view addSubview:button2];
        
        button3 = [UIButton buttonWithType:UIButtonTypeCustom];
        [button3 addTarget:self
                    action:@selector(aMethod3:)
          forControlEvents:UIControlEventTouchUpInside];
        button3.frame = CGRectMake(100.0, 100.0, 30.0, 30.0);
        UIImage *btnImage3 = [UIImage imageNamed:@"uncheck.png"];
        [button3 setImage:btnImage3 forState:UIControlStateNormal];
        [self.view addSubview:button3];
        
    }
    
        



-(void)aMethod1 :(id)sender{
        
        if (check1 == 0) {
            
            UIImage *btnImage1 = [UIImage imageNamed:@"check.png"];
            
            [button1 setImage:btnImage1 forState:UIControlStateNormal];
            check1 = 1;
        }
        else{
        
            UIImage *btnImage1 = [UIImage imageNamed:@"uncheck.png"];
            [button1 setImage:btnImage1 forState:UIControlStateNormal];
            check1 = 0;
        }
    }
    
        




-(void)aMethod2 :(id)sender{
        
        if (check2 == 0) {
            
            UIImage *btnImage1 = [UIImage imageNamed:@"check.png"];
        
            [button2 setImage:btnImage1 forState:UIControlStateNormal];
            check2 = 1;
        }
        else{
            
            UIImage *btnImage1 = [UIImage imageNamed:@"uncheck.png"];
            [button2 setImage:btnImage1 forState:UIControlStateNormal];
            check2 = 0;
        }
    }

    


-(void)aMethod3 :(id)sender{
    
    if (check3 == 0) {
        
        UIImage *btnImage1 = [UIImage imageNamed:@"check.png"];
        
        [button3 setImage:btnImage1 forState:UIControlStateNormal];
        check3 = 1;
    }
    else{
        
        UIImage *btnImage1 = [UIImage imageNamed:@"uncheck.png"];
        [button3 setImage:btnImage1 forState:UIControlStateNormal];
        check3 = 0;
    }
}

   

Answer 1

请喜欢。它如此简单

UIButton *button1 = [UIButton buttonWithType:UIButtonTypeCustom];
    [button1 addTarget:self
                action:@selector(aMethod1:)
      forControlEvents:UIControlEventTouchUpInside];
    button1.frame = CGRectMake(10.0, 100.0, 30.0, 30.0);

    UIImage *btnImage1 = [UIImage imageNamed:@"uncheck.png"];
    UIImage *selected = [UIImage imageNamed:@"check.png"];

    [button1 setImage:btnImage1 forState:UIControlStateNormal];
    [button1 setImage:selected forState:UIControlStateSelected];

    button1.selected = NO;




- (void)aMethod1:(UIButton *)btn{
    btn.selected = !btn.selected;
}

Answer 2

试试下面的Code，它的简单解决方案。

BOOL checked;
-(void)viewDidLoad {
    checked = YES;  //Set depending on your initial state
}

-(IBACtion)pressed:(UIButton *)sender {
    checked = !checked;
    [sender setImage:[UIImage imageNamed:((checked) ? @"check2.png" : @"NOTCHECKEDIMAGE.png")] forState:UIControlStateNormal];
}

可能对您有所帮助。

另一种解决方案

// when you setup your button,eg. in Your ViewDidLoad method 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
}

这里也有Diff Library，你也可以尝试一下

  

  
1. DLRadioButton
  
2. RadioButton-ios
  
3. TNRadioButtonGroup
  
4. SSRadioButtonsController
  
5. VCRadioButton
  
6. TNRadioButtonGroup
  

Answer 3

[_nameTextField resignFirstResponder];
[_emailTextField resignFirstResponder];
[_contactNumberTextField resignFirstResponder];
if (sender.tag==0)
{
    sender.tag = 1;
    [sender setImage:[UIImage imageNamed:@"uncheck.png"] forState:UIControlStateNormal];

}
else
{
    sender.tag=0;
    [sender setImage:[UIImage imageNamed:@"check.png"] forState:UIControlStateNormal];
}

Answer 4

试试这个，会帮助你并轻松实现

 @interface ViewController ()
        {
            int check1;
            int check2;
            int check3;

            UIButton * button1;
            UIButton * button2;
            UIButton * button3;
        }
        
                


  @end
    
            
    @implementation ViewController
        
                




     - (void)viewDidLoad {
            [super viewDidLoad];

            check1 = 0;
            check2 = 0;
            check3 = 0;

            button1 = [UIButton buttonWithType:UIButtonTypeCustom];
            [button1 addTarget:self
                       action:@selector(checkNdUncheckButtons:)
             forControlEvents:UIControlEventTouchUpInside];
            button1.tag = 100;
            button1.frame = CGRectMake(10.0, 100.0, 30.0, 30.0);
            UIImage *btnImage1 = [UIImage imageNamed:@"uncheck.png"];
            [button1 setImage:btnImage1 forState:UIControlStateNormal];
            [self.view addSubview:button1];

            button2 = [UIButton buttonWithType:UIButtonTypeCustom];
            [button2 addTarget:self
                        action:@selector(checkNdUncheckButtons:)
              forControlEvents:UIControlEventTouchUpInside];
            button2.tag = 200;
            button2.frame = CGRectMake(50.0, 100.0, 30.0, 30.0);
            UIImage *btnImage2 = [UIImage imageNamed:@"uncheck.png"];
            [button2 setImage:btnImage2 forState:UIControlStateNormal];
            [self.view addSubview:button2];

            button3 = [UIButton buttonWithType:UIButtonTypeCustom];
            [button3 addTarget:self
                        action:@selector(checkNdUncheckButtons:)
              forControlEvents:UIControlEventTouchUpInside];
            button3.tag = 300;
            button3.frame = CGRectMake(100.0, 100.0, 30.0, 30.0);
            UIImage *btnImage3 = [UIImage imageNamed:@"uncheck.png"];
            [button3 setImage:btnImage3 forState:UIControlStateNormal];
            [self.view addSubview:button3];

        }

    -(void)checkNdUncheckButtons :(id)sender{
            UIButton *selectedButton = (UIButton*)sender;
      UIImage *checkimage = [UIImage imageNamed:@"check.png"];
                UIImage *unCheckImage = [UIImage imageNamed:@"uncheck.png"];

            if (selectedButton.tag == 100) {
if (button1.image == checkimage) {
[button1 setImage:unCheckImage forState:UIControlStateNormal];
} else {
                [button1 setImage:checkimage forState:UIControlStateNormal];
}
                [button2 setImage:unCheckImage forState:UIControlStateNormal];
                [button3 setImage:unCheckImage forState:UIControlStateNormal];


            }
            else if (selectedButton.tag == 200){

                [button1 setImage:unCheckImage forState:UIControlStateNormal];
if (button2.image == checkimage) {
[button2 setImage:unCheckImage forState:UIControlStateNormal];
}
else {
                [button2 setImage:checkimage forState:UIControlStateNormal];
}
                [button3 setImage:unCheckImage forState:UIControlStateNormal];
            }
    else {
     [button1 setImage:unCheckImage forState:UIControlStateNormal];
                [button2 setImage:unCheckImage forState:UIControlStateNormal];
if (button3.image == checkimage) {
[button3 setImage:unCheckImage forState:UIControlStateNormal];
}
else {
                [button3 setImage:checkimage forState:UIControlStateNormal];
}
        }
        
            
        
            

尝试理解然后在代码中实现然后执行

Answer 5

请在代码中尝试以下修正。

@interface ViewController ()
{
    UIButton * button1;
    UIButton * button2;
    UIButton * button3;
}

        
@end

        
@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    UIImage *btnImage1 = [UIImage imageNamed:@"uncheck.png"];
    UIImage *btnImage2 = [UIImage imageNamed:@"check.png"];

    button1 = [UIButton buttonWithType:UIButtonTypeCustom];
    [button1 addTarget:self action:@selector(aMethod1:)
     forControlEvents:UIControlEventTouchUpInside];
    button1.frame = CGRectMake(10.0, 100.0, 30.0, 30.0);
    UIButton *button1 = [UIButton buttonWithType:UIButtonTypeCustom];
    [button1 setImage:btnImage1 forState:UIControlStateNormal];
    [button1 setImage:btnImage2 forState:UIControlStateSelected];
    button1.selected = NO;
    [self.view addSubview:button1];

    button2 = [UIButton buttonWithType:UIButtonTypeCustom];
    [button2 addTarget:self action:@selector(aMethod2:)
      forControlEvents:UIControlEventTouchUpInside];
    button2.frame = CGRectMake(50.0, 100.0, 30.0, 30.0);
    [button2 setImage:btnImage1 forState:UIControlStateNormal];
    [button2 setImage:btnImage2 forState:UIControlStateSelected];
    button2.selected = NO; 
    [self.view addSubview:button2];

    button3 = [UIButton buttonWithType:UIButtonTypeCustom];
    [button3 addTarget:self action:@selector(aMethod3:)
      forControlEvents:UIControlEventTouchUpInside];
    button3.frame = CGRectMake(100.0, 100.0, 30.0, 30.0);
    [button3 setImage:btnImage1 forState:UIControlStateNormal];
    [button3 setImage:btnImage2 forState:UIControlStateSelected];
    button3.selected = NO;
    [self.view addSubview:button3];

}

-(void)aMethod1 :(id)sender {

     button1.selected = !button1.selected;
}

-(void)aMethod2 :(id)sender {

     button2.selected = !button2.selected;
}   

-(void)aMethod3 :(id)sender {

     button3.selected = !button3.selected;
}

谢谢：）

Answer 6

首先将图像重命名为check_0.png（未检查图像）＆amp; check_1.png（选中图片）

第1步：在界面中声明一个全局

@interface HomeViewController () {
    NSMutableArray *selctionArray;
}

第2步：在viewDidLoad中初始化此数组＆amp;添加数据

[self initArrayData];

-(void) initArrayData {
    selctionArray = [[NSMutableArray alloc] init];
    for (int i=0;i<3;i++) {
        [selctionArray addObject:@"0"];
    }
}

第3步：以编程方式创建3个按钮并为其设置标记

首先创建三个按钮，以编程方式调用clikcedButton作为点击侦听器。 Say按钮是button1，按钮2，按钮3。

button1.tag = 123451;
button2.tag = 123452;
button3.tag = 123453;

第4步：让我们先说明第一个按钮

// by-default first button will be checked
[selctionArray replaceObjectAtIndex:0 withObject:@"1"];
[self updateMyButtons];

-(void) updateMyButtons {
    UIButton *mButton;
    for (int i=0;i<3;i++) {
        mButton = (UIButton *)[self.view viewWithTag:123451+i];
        [mButton setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:@"check_%@.png", [selctionArray objectAtIndex:i]] forState:UIControlStateNormal];
    }
}

第5步：现在让我们实施IBAction

-(IBAction)clikcedButton:(id)sender {
    [self initArrayData];
    UIButton *mButton = (UIButton *) sender;
    int clickedButtonTag = mButton.tag;
    clickedButtonTag = clickedButtonTag - 123451;
    [selctionArray replaceObjectAtIndex:clickedButtonTag withObject:@"1"];
    [self updateMyButtons];
}

如果您还有其他需要，请告诉我。