iOS:UIGestureRecognisers与Subviews的问题

Question

我编写了以下代码来将手势识别器附加到多个图像视图.

[imageview1 setUserInteractionEnabled:YES];
[imageview1 setMultipleTouchEnabled:YES];

[imageview2 setUserInteractionEnabled:YES];
[imageview2 setMultipleTouchEnabled:YES];

[imageview3 setUserInteractionEnabled:YES];
[imageview3 setMultipleTouchEnabled:YES];

[imageview4 setUserInteractionEnabled:YES];
[imageview4 setMultipleTouchEnabled:YES];

[imageview5 setUserInteractionEnabled:YES];
[imageview5 setMultipleTouchEnabled:YES];

[imageview6 setUserInteractionEnabled:YES];
[imageview6 setMultipleTouchEnabled:YES];

UILongPressGestureRecognizer *gestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(gestureHandler:)];
gestureRecognizer.delegate = self;
[imageview1 addGestureRecognizer:gestureRecognizer];
[imageview2 addGestureRecognizer:gestureRecognizer];
[imageview3 addGestureRecognizer:gestureRecognizer];
[imageview4 addGestureRecognizer:gestureRecognizer];
[imageview5 addGestureRecognizer:gestureRecognizer];
[imageview6 addGestureRecognizer:gestureRecognizer];

我注意到两个问题!

1. 所有imageview都没有附加手势识别器!只有一个imageview6(最后一个附加)具有手势识别器.这是苹果不允许的吗？

2. 我在父视图的子视图中拥有所有这些图像视图.当我将这些直接添加到父视图(self.view)时,它可以工作,但问题仍然是#1.当我在子视图(self.view.mysubview)中有这些图像视图时,他们都没有识别出手势!

请有人请告诉我如何处理这些问题.

谢谢.

Answer 1

UIGestureRecognizers一次只能附加到一个视图.您必须为每个图像视图创建一个单独的一个.