如何在ios中选中和取消选中按钮

我是iOS初学者，在我的项目中，我为用户插入了“3”个按钮“检查”和“取消检查”，如下图所示

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

剩下的两个按钮必须是“未选中的”，为此，我写了下面的代码，但这是一个太长的过程。有人能解释一下简单而简短的过程吗

我的代码：-

---

只要尝试下面的代码，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];
}

可能会对您有所帮助。

另一个解决方案 这里还有Diff库，你也可以试试

---

只要尝试下面的代码，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];
}

可能会对您有所帮助。

另一个解决方案 这里还有Diff库，你也可以试试

---

请喜欢。太简单了

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;
}

---

请喜欢。太简单了

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;
}

---

试试这个，会帮助你，让它变得简单

 @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];
}
        }
        
            
        
            

---

试着理解代码，然后在代码中实现，然后去做

试试这个，它会帮助你，让你变得简单

 @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];
}
        }
        
            
        
            

---

尝试理解并在代码中实现，然后执行它

请在代码中尝试下面的更正

@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：）

请尝试下面的代码更正

@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：）

首先将图像重命名为check_0.png（未选中图像）和check_1.png（选中图像）

步骤1：在接口中声明一个全局 步骤2：在viewDidLoad中初始化此数组并添加数据 步骤4：假设第一个按钮已选中

---

如果您还需要什么，请告诉我。

首先将图像重命名为check_0.png（未选中图像）和check_1.png（选中图像）

步骤1：在接口中声明一个全局 步骤2：在viewDidLoad中初始化此数组并添加数据 步骤4：假设第一个按钮已选中

---

---

如果您还需要什么，请告诉我。

了解如何在UIButtons应用程序中使用标记。。。1小时后我会发布简短的回答。。对不起，现在是我休息的时间…好的，我会等你的代码，我会在10分钟后发布答案…发布答案。。。检查并让我知道，如果你还需要什么…学习如何使用标签在应用程序中的UIButtons。。。1小时后我会发布简短的回答。。对不起，现在是我休息的时间…好的，我会等你的代码，我会在10分钟后发布答案…发布答案。。。检查并让我知道如果你还需要什么…嗨，拉吉，当我取消按钮时，它必须uncheck@Ramakrishna：谢谢你接受我的回答。。。嗨raji当我取消选中按钮时它必须uncheck@Ramakrishna：谢谢你接受我的回答@NSPratik，我已经阅读并给出了正确的解决方案。我们只能给出最接近的解决方案，我们无法编写完整的代码，他必须这样做。我应该给他暗示或者帮助他。如果你有答案，请把它贴出来。编辑答案很容易，但编写完美的解决方案却不那么容易。事实上，问问题的人想要管理多个按钮及其所选状态，这就是我告诉你的原因。是的，Pratik，我也是Ahmedabad人，你为哪家公司工作过？@Pratik，我同意你的看法。下次我来处理这件事。让我们一起去吧。@NSPratik，我已经阅读并给出了正确的解决方案。我们只能给出最接近的解决方案，我们无法编写完整的代码，他必须这样做。我应该给他暗示或者帮助他。如果你有答案，请把它贴出来。编辑答案很容易，但编写完美的解决方案却不那么容易。事实上，问问题的人想要管理多个按钮及其所选状态，这就是我告诉你的原因。是的，Pratik，我也是Ahmedabad人，你为哪家公司工作过？@Pratik，我同意你的看法。下次我来处理这件事，让我们来。

[self initArrayData];

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

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

// 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];
    }
}

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