LongPress手勢不適用於iOS 5和iOS 5.1（但適用於iOS 6）

Question

以下代碼不適用於iOS 5和iOS 5.1（但適用於iOS 6）：

- (void)viewDidLoad {
    ...
    UILongPressGestureRecognizer* gesture = [[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)] autorelease];
    [myWebView addGestureRecognizer:gesture];
}

- (void)handleLongPress:(UIGestureRecognizer*)gestureRecognizer {
  ...
}

如何解決這個問題？ 非常感謝您的幫助！

Answer 1

正確的代碼：

- (void)viewDidLoad {
    UILongPressGestureRecognizer* gesture = [[[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleLongPress:)] autorelease];
    gesture.delegate = self;
    [myWebView addGestureRecognizer:gesture];
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return YES;
}

Answer 2

試試這個代碼..

    UILongPressGestureRecognizer *longpressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressHandler:)];
    longpressGesture.minimumPressDuration = 5;
    [longpressGesture setDelegate:self];
    [myWebView addGestureRecognizer:longpressGesture];
    [longpressGesture release];

    - (void)longPressHandler:(UILongPressGestureRecognizer *)gestureRecognizer {
        NSLog(@"longPressHandler");
    }