iphone - 如何检测 View 中任意位置的点击？

Question

我的应用程序有一个教程，它应该只在应用程序第一次打开时显示，点击它可以关闭。

我正在我的 viewDidLoad 中初始化一个 UITapGestureRecognizer:

tapper_tut = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleSingleTap:)];
tapper_tut.cancelsTouchesInView = FALSE;
[self.view addGestureRecognizer:tapper_tut];

我有一个 IBAction 来检测点击并将教程设置为隐藏:

- (IBAction)dismiss_tut{
    if (????????????????) {
        _tutorial.hidden = YES;
    }
}

但我不知道在 if 语句条件中放入什么，或者这是否是解决此问题的正确方法。

我如何在点击时关闭 UIImageView？

Answer 1

UITapGestureRecognizer *gr = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleGesture:)];
[self.view addGestureRecognizer:gr];
// if not using ARC, you should [gr release];
// mySensitiveRect coords are in the coordinate system of self.view


- (void)handleGesture:(UIGestureRecognizer *)gestureRecognizer {
    CGPoint p = [gestureRecognizer locationInView:self.view];
    if (CGRectContainsPoint(mySensitiveRect, p)) {
        NSLog(@"got a tap in the region i care about");
    } else {
        NSLog(@"got a tap, but not where i need it");
    }
}