objective-c - 从单独的类中调用静态方法上的选择器

Question

假设我想创建以下手势识别器

UITapGestureRecognizer * c1 = [[UITapGestureRecognizer alloc] 
          initWithTarget:self 
          action:@selector([[MyGestureRecognizer ViewWasClicked1:]]; // error 
[c1 setNumberOfTapsRequired:1];
[c1 setNumberOfTouchesRequired:1];
[[self view] addGestureRecognizer:c1];

但我想在一个单独的类上调用选择器。我有方法：

+ (void)ViewWasClicked1:(UITapGestureRecognizer *)sender {    

    NSLog(@"click1 mouse down");

}

在 MyGestureRecognizer 类中。我在寻找什么有可能吗？

Answer 1

语法是：

UITapGestureRecognizer * c1 = [[UITapGestureRecognizer alloc] 
      initWithTarget:[MyGestureRecognizer class]
      action:@selector(ViewWasClicked1:)]; // error

Answer 2

要检查和调用静态方法，您可以这样做：

SEL staticMethodSelector = @selector(methodName);
if ([[ClassName class] respondsToSelector:staticMethodSelector]) {
    [[ClassName class] performSelector:staticMethodSelector];
}