UIPinchGestureRecognizer 没有响应
我有一个通用二进制应用程序，目前正在开发该应用程序的 iPad 版本。 iPad 使用 uitabbarcontroller，在第二个选项卡上我有 6 个图像，当添加 UIPinchGesture 时它没有响应。我有 userInteractionEnabled=YES; 我尝试以编程方式添加图像视图，然后添加手势识别器，但似乎仍然不起作用。
我尝试将委托设置为视图控制器并实现委托方法之一，但没有得到任何响应。下面是我正在做的代码示例：
UIImageView *img2 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"img2-large.png"]];
img2.frame = CGRectMake(20, 20, 100, 100);
[img2 setUserInteractionEnabled:YES];
img2.contentMode = UIViewContentModeScaleAspectFit;
[self.view addSubview:img2];
UIPinchGestureRecognizer *img2Pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(img2Pinch:)];
[img2 addGestureRecognizer:img2Pinch];
[img2Pinch release];
- (void)img2Pinch:(UIPinchGestureRecognizer *)sender {
NSLog(@"HERE");
}
我确信我错过了一些愚蠢的事情。我以前用过这个东西，但我一生都无法弄清楚出了什么问题。
I have a universal binary application and currently working on the iPad version of the application. The iPad is using a uitabbarcontroller and on the second tab I have 6 images and when adding a UIPinchGesture it is not responding. I have userInteractionEnabled=YES; I tried adding the image view programmatically and then adding the gesture recognizer and still nothing seems to work.
I tried setting the delegate to the view controller and implementing one of the delegate methods and didn't get any responses. Below is the code sample of what I am doing:
UIImageView *img2 = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"img2-large.png"]];
img2.frame = CGRectMake(20, 20, 100, 100);
[img2 setUserInteractionEnabled:YES];
img2.contentMode = UIViewContentModeScaleAspectFit;
[self.view addSubview:img2];
UIPinchGestureRecognizer *img2Pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@selector(img2Pinch:)];
[img2 addGestureRecognizer:img2Pinch];
[img2Pinch release];
- (void)img2Pinch:(UIPinchGestureRecognizer *)sender {
NSLog(@"HERE");
}
I'm sure it's something silly that I'm missing. I've used this stuff before but can't for the life of me figure out what is going wrong.
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将
userInteractionEnabled设置为YES。默认为NO。此外，为了处理多点触摸（即捏合操作），需要将multipleTouchEnabled设置为YES。Set
userInteractionEnabledtoYES. The default isNO. Also, in order to handle multi-touches, which is what the pinch is,multipleTouchEnabledneeds to be set toYES.您将其放入什么视图？
是滚动视图吗？
另外
img2.multipleTouchEnabled = YES，默认情况下不启用多点触控，捏合需要多个手指。（
img2Pinch已正确释放）What view are you placing it into?
Is it a scroll view?
Also
img2.multipleTouchEnabled = YES, multi touch is not enabled by default, a pinch requires multiple fingers.(
img2Pinchis correctly released)