ios - 是否可以找到iphone上某个点存在的所有 subview ？

Question

我希望能够在点击时检索有关放置在该点击点的所有不同 subview 的信息。例如，如果有一个背景，并且在它前面是一个游戏角色，我希望能够点击那个角色，它会检索到该角色和背景都在那个点击点的信息.

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    //retrieve info about what other subviews lie behind at this point
}

Answer 1

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
  {
   UITouch *touch=[touches anyObject];
   CGPoint p=[touch locationInView:self.view];
   NSLog(@"Coordiantes of Tap Point:(%f,%f)", p.x, p.y);

   NSArray *anArrayOfSubviews = [self.view subviews];
   NSMutableArray *requiredSubviewArray = [NSMutableArray array];

   for (UIView *aSubView in anArrayOfSubviews){
     if(CGRectContainsPoint(aSubView.frame, p)) {
        //aSubView is there at point 'p'
        [requiredSubviewArray addObject:aSubView];
     }
  }
// requiredSubviewArray contains all the Subviews at the Tap Point.