相关疑难解决方法(0)

UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapTapTap:)];
[self.view1 addGestureRecognizer:tapGesture];
[self.view2 addGestureRecognizer:tapGesture];
[tapGesture release];

在上面的代码中,只view2识别了点击.如果我注释掉第三行,那么点击就会view1被识别出来.如果我是对的,你只能使用一次手势识别器,我不确定这是一个bug还是只需要一些文档.

我想模仿一个长按按钮,我该怎么做？我认为需要一个计时器.我明白UILongPressGestureRecognizer但是我怎么能利用这种类型呢？

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?
}