objective-c - 如何让pageController控制UIImageView？

Question

我想要一个 UIImageView 向左滑动，UIImageView 会改变图像，此时 pageController +1，如果向右滑动，pageContoller -1，并显示上一个图像... ...我该如何实现呢？有什么简单的代码吗？你。

Answer 1

只需将 UISwipeGestureRecognizer 附加到 UIImageView。当手势识别器触发时，您将检查它的方向，然后更改图像并相应地更新 pageController。

Answer 2

UIGestureRecognizer *recognizer;

recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(next:)];
UISwipeGestureRecognizer *swipeLeftRecognizer = (UISwipeGestureRecognizer *)recognizer;
swipeLeftRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipeLeftRecognizer];
swipeLeftRecognizer=nil;
[recognizer release];

recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(prev:)];
UISwipeGestureRecognizer *swipeRightRecognizer = (UISwipeGestureRecognizer *)recognizer;
swipeRightRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
[self.view addGestureRecognizer:swipeRightRecognizer];
swipeLeftRecognizer=nil;
[recognizer release];