手指在 iPad 屏幕上滑动

Question

How do i implement and code for recognizing swipes across the screen, and also making it so that if it swipes on a uiimageview then things happen, // code, how can i do this? THanks

Answer 1

Use UISwipeGestureRecognizer. Something like this to detect a swipe on imageView :

UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(imageSwiped:)];
swipe.direction = UISwipeGestureRecognizerDirectionRight;
[imageView addGestureRecognizer:swipe];
[swipe release];

Then define a method - (void)imageSwiped:(UISwipeGestureRecognizer *)sender and react to the swipe there.

Answer 2

I suggest you use a UISwipeGestureRecongizer for it, unless you have a very specific gesture to recongize.

Try reading out: Event Handling Guide for iOS from Apple.