在iPhone中获取按钮标记值

我动态制作了20个按钮，我得到了所有按钮的标签值。

但我需要知道如何使用该标签值。

我需要有关使用标签值按下的每个按钮的信息。
那么，我如何使用这些标签值？

Answer 1

您需要设置每个按钮的目标操作。

[button setTarget:self action:@selector(someMethod:) forControlEvents:UIControlEventTouchUpInside]; 

然后实现someMethod:像这样：

 - (void)someMethod:(UIButton *)sender { if (sender.tag == 1) { // do action for button with tag 1 } else if (sender.tag == 2) { // do action for button with tag 2 } // ... and so on } 

Answer 2

为什么需要使用tag来获取按钮。 您可以直接从其操作方法获取按钮引用。

 - (void)onButtonPressed:(UIButton *)button { // "button" is the button which is pressed NSLog(@"Pressed Button: %@", button); // You can still get the tag int tag = button.tag; } 

我希望你已经为按钮添加了目标动作。

 [button addTarget:self action:@selector(onButtonPressed:) forControlEvents:UIControlEventTouchUpInside]; 

Answer 3

您可以使用该标签来引用您的按钮。 例如，您已将UIButton添加到UIView *mainView 。 要获得对该按钮的引用，您应该写下面的内容：

 UIButton *buttonWithTag1 = (UIButton *)[mainView viewWithTag:1]; 

Answer 4

像这样设置标签：

 for (createButtonIndex=0; createButtonIndex 

并添加捕获标记的方法： -

 -(void)buttonsAction:(id)sender { UIButton *instanceButton = (UIButton*)sender; switch(instanceButton.tag) { case 1(yourTags): //Code break; case 2: //Code break; } } 

希望这可以帮助 ！！

Answer 5

 - (IBAction)buttonPressed:(id)sender { UIButton selectedButton = (UIButton *)sender; NSLog(@"Selected button tag is %d%", selectedButton.tag); } 

Answer 6

  usefully we use btn tag if You Write One Function For (more than one) Buttons .in action if we want to write separate Action For button at that situvation we use btn tag.it can get two ways I) case sender.tag //if we have four buttons Add,mul,sub,div having Same selector and add.tag=10 mul.tag=20,sub.tag=30,div.tag=40; -(IBAction) dosomthing:(id)sender { int x=10; int y=20; int result; if(sender.tag==10) { result=x+y; }else if(sender.tag==20) { result=x*y; }else if(sender.tag==30) { result=xy; }else if(sender.tag==40) { result=x/y; } NSLog(@"%i",result); } 2)Case UIButton *btn=[self.view viewWithTag:10]; then you got object of add button uyou can Hide It With btn.hidden=YES; 

Answer 7

 UIButton *btn = (UIButton *)[mainView viewWithTag:button.tag];