你好开发者(这是我在Stack-Overflow中的第一篇文章，所以请在评论中告诉我我做错了什么:)。此代码检测用户是否正在捏合:UIPinchGestureRecognizer*twoFingerPinch=[[[UIPinchGestureRecognizeralloc]initWithTarget:selfaction:@selector(twoFingerPinch:)]autorelease];[[selfview]addGestureRecognizer:twoFingerPinch];虚空行动:-(void)twoFingerPinch:(UIPinchGestureRe