Question

我想使用MutableArray计数创建多个按钮。创建按钮后，每当按下特定按钮，我想在标签中显示该按钮名称。但是一旦按下按钮，它总是显示MutableArray的最后一个索引值名称。请帮助解决这个问题。我是iOS的新手。这是我的代码。

-(void)ViewDidLoad {
    NSMutableArray *Mute_array=[[NSMutableArray alloc]initWithObjects:@"One", @"Two", @"Three", @"Four", @"Five", nil]; 

   for (int k=0; k<[Mute_array count]; k++){
       UIButton *btn_sub_category = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        [btn_sub_category addTarget:self action:@selector(clicks:) forControlEvents:UIControlEventTouchDown];
        [btn_sub_category setTitle:[Mute_Sub_Category objectAtIndex:k] forState:UIControlStateNormal];
        btn_sub_category.frame = CGRectMake(278, k*130, 483, 44);
        [self.view addSubview:btn_sub_category];
    }
}

-(void)clicks:(id)sender{
   label.text=[btn_sub_category  currentTitle];       
   //Here a want to send the name of that clicked button current title
}

但是，这里的按钮当前标题始终只显示MutableArray的最后一个对象“Five”。我想要按下按钮当前标题。

Answer 1

-(void)clicks:(id)sender{
    UIButton *theButton = (UIButton*)sender;
    NSString *theButtonTitle = [theButton titleForState:UIControlStateNormal]
    NSLog(@"theButtonTitle :- %@", theButtonTitle);
    label.text=theButtonTitle;       
   //Here a want to send the name of that clicked button current title
}

试试这段代码。我使用以下方法获取按钮的标题

titleForState：

返回与指定状态关联的标题。    - （NSString *）titleForState：（UIControlState）state参数

状态
The state that uses the title. The possible values are described in UIControlState.
返回值

指定州的标题。如果没有设置标题   具体状态，此方法返回与之关联的标题   UIControlStateNormal状态。

阅读文档https://developer.apple.com/library/ios/documentation/uikit/reference/UIButton_Class/UIButton/UIButton.html#//apple_ref/occ/instm/UIButton/titleForState：

Answer 2

试试这样：

-(void) clicks:(id)sender
    {
        if ([sender isKindOfClass:[UIButton class]])
        {
            UIButton *button = (UIButton*)sender;
            NSString *title = button.currentTitle;

            // do whatever you want with title
        }
    }

Answer 3

尝试赞，

-(void)clicks:(id)sender{
 UIButton *resultebutton= (UIButton*)sender;
   label.text=resultebutton.titleLabel.text; 
}

如何以编程方式创建多个按钮，按下特定按钮时获取按钮名称？

3 个答案: