用于更改UItextfield值的多个按钮

Question

在不必拥有多个IBActions的情况下，实现以下目标的最佳做法是什么？

当点击其中一个蓝色按钮时，我希望它将下面的输入字段更改为按钮指定的VALUE。

由于

Answer 1

你需要为Button1设置UIButton标签，Button2 ......为0,1，依此类推

修改

    -(IBAction)buttonAction:(UIButton *)sender
     {
         switch(sender) {
        case 0: 
             //Change UITextValue
        break;

        case 1: 
             //Change UITextValue
        break;

        default: //Not found
        break;

      }
  }

Answer 2

U也可以通过将目标设置为相同的选择器来实现此目的 例如

 UIButton *button1 = [UIButton buttonWithType:UIButtonTypeCustom];
 [button1 addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];
 UIButton *button2 = [UIButton buttonWithType:UIButtonTypeCustom];
 [button2 addTarget:self action:@selector(buttonTapped:) forControlEvents:UIControlEventTouchUpInside];



button1.frame = CGRectMake(20, 20, 100, 100);
button2.frame = CGRectMake(20, 130, 100, 100);
button1.tag = 100;



button1.backgroundColor = [UIColor greenColor];
button2.backgroundColor = [UIColor redColor];
button2.tag = 200;

[self.view addSubview:button1];
[self.view addSubview:button2];

//for selector

 -(void)buttonTapped:(UIButton *)sender
 {

   NSLog(@"same target and tag =%d",sender.tag);


}