给button添加长按手势并侦测到此button

1， 添加手势

 self.longPressRecognizer = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(handleLongPress:)];
[btn addGestureRecognizer:self.longPressRecognizer];

2，得到当前执行长点选的button

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

    UIButton *btn = (UIButton *)recognizer.view;

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