ios - longPress 时启用 UIPanGestureRecognizer

Question

当 customView 执行 longPress 时，我想在 customView 上启用 UIPanGestureRecognizer。
(我希望当你longPresscustomView时，customView会切换到“移动模式”，你可以移动customView通过拖动。)

但是在这段代码中，只有 longPressAction: 被调用了。 panAction: 没有调用。
如何修复它以启用 PanAction:？

- (void)viewDidLoad
{
    [self.view addSubview:customView];

    UILongPressGestureRecognizer *longPressRecognizer = [[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPressAction:)];
    [customView addGestureRecognizer:longPressRecognizer];
    UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(panAction:)];
    [customView addGestureRecognizer:panRecognizer];
}

- (void)longPressAction:(UILongPressGestureRecognizer *)recognizer
{
    if ([recognizer state] == UIGestureRecognizerStateBegan) {
        CustomView *customView = (CustomView *)recognizer.view;
        customView.panRecongnizerEnabled = YES; //panRecongnizerEnabled is CustomView's property
    }
    if ([recognizer state] == UIGestureRecognizerStateEnded) {
        CustomView *customView = (CustomView *)recognizer.view;
        customView.panRecongnizerEnabled = NO;
    }
}

- (void)panAction:(UIPanGestureRecognizer *)recognizer
{
    CustomView *customView = (CustomView *)recognizer.view;
    if (customCell.panRecongnizerEnabled == NO) return;
    NSLog(@"running panAction");
}

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

Answer 1

您的 ViewController 需要符合 UIGestureRecognizerDelegate。我怀疑您已经这样做了或否则shouldRecognizeSimultaneouslyWithGestureRecognizer 将没有任何意义。但是您绝对缺少的是将 gestureRecognizer 的委托(delegate)设置为您的 viewController:

longPressRecognizer.delegate = self;
panRecognizer.delegate = self;

现在您应该同时接收到长按和平移。

注意:我在没有任何 customView 的情况下进行了测试，只是将它们添加到 self.view。至少在那种情况下，上面的代码按预期工作。