如何通过longPressGestureRecognizer获取button.tag？

Question

我正在动态添加图像按钮到一些scrollview.他们都指向一个longPressHandler.现在,我如何获得按下哪个按钮？[sender tag]给了我添加到按钮的longGestureRecognizer标签,我无法手动设置该标签.

for (...) {
    UIButton *button = [[UIButton alloc] init];
    button.tag = w + h * 3; 
    [button addTarget:self action:@selector(imageButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    UILongPressGestureRecognizer *gest = [[UILongPressGestureRecognizer alloc]
                initWithTarget:self action:@selector(imageButtonLongPress:)];
    gest.minimumPressDuration = 1;
    gest.delegate = self;

    [button addGestureRecognizer:gest];
    [gest release];

    [scrollView addSubview:button];
    [button release];
}

- (void) imageButtonLongPress:(id)sender {  
    // how to get button tag here?
}

Answer 1

其中有一个view属性,UIGestureRecognizer它返回识别器所附加的视图.我认为这是你最好的选择.

- (void) imageButtonLongPress:(id)sender {  
    UIGestureRecognizer *recognizer = (UIGestureRecognizer*) sender;
    int tag = recognizer.view.tag;
}