ios开发笔记之手势触控

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1.区分单击和双击事件

- (void)addTapHandler{    // 单击的 Recognizer    UITapGestureRecognizer* singleRecognizer;    singleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapActon:)];    /**     *  单击     */    singleRecognizer.numberOfTapsRequired = 1; // 单击        //给view添加一个手势监测；    [self.feedView addGestureRecognizer:singleRecognizer];            // 双击的 Recognizer    UITapGestureRecognizer* doubleRecognizer;    doubleRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapActon)];                /**     *  双击     */    doubleRecognizer.numberOfTapsRequired = 2;               //给view添加一个手势监测；    [self.feedView addGestureRecognizer:doubleRecognizer];            [singleRecognizer requireGestureRecognizerToFail:doubleRecognizer];}

2. UILongPressGestureRecognizer 执行两次的问题

- (void)handleLongPress:(UILongPressGestureRecognizer*)sender {     if (sender.state == UIGestureRecognizerStateEnded) {        NSLog(@"Long press Ended");    }    else {        NSLog(@"Long press detected.");    }}

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