ios - 获取长按时在 UIScrollView 中添加的 UIButtons 的标签

Question

在我的应用程序中，我在 uiscrollview 中添加 uibuttons 作为 subview 。我想在长按时获得按钮的标签。我的代码是

UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongPress:)];
longPress.minimumPressDuration = 2.0;
longPress.delegate = self;
[gridScrollView addGestureRecognizer:longPress];

我想知道如何在这段代码中获取特定的按钮标签

-(void)handleLongPress:(UILongPressGestureRecognizer *)gestureRecognizer {

}

Answer 1

您将从 subviews 属性中获取所有按钮

for (UIButton *eachBtn  in [gridScrollView subviews]) {
    if ([eachBtn isKindOfClass:[UIButton class]]) {
         NSLog(@"Button Tag : %i",eachBtn.tag);
    }
} 

如果要传递按钮的标签，则将相同的标签设置为手势

longPress.view.tag = btn.tag

之后在您的长按处理程序方法中获取此标签

  NSLog(@"Button Tag : %i",longPress.view.tag);