我正在动态地将图像按钮添加到某些滚动视图中。它们都指向一个 longPressHandler。现在,我如何知道按下了哪个按钮? [sender tag] 为我提供了添加到按钮的 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?
}
有一个view
财产在UIGestureRecognizer
它返回识别器附加到的视图。我认为这是你最好的选择。
- (void) imageButtonLongPress:(id)sender {
UIGestureRecognizer *recognizer = (UIGestureRecognizer*) sender;
int tag = recognizer.view.tag;
}
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