Question

我的项目中有一个包含3 UIScrollView的屏幕。当我尝试缩放其中一个scrollview时，这些滚动视图包含一个图像我不知道怎么样但是所有人都在一起放大。

这是我的代码：

if ([FrameString isEqualToString:@"LB"]) {
    leftButton.hidden = YES;

    if (imageLeft == nil) {
        imageLeft = [[UIImageView alloc]initWithImage:pickedImage];
    }

    imageLeft.frame = CGRectMake(0 , 0, imageLeft.frame.size.width/4, imageLeft.frame.size.height/4);
    self.Scrollview.maximumZoomScale = 0.9;
    self.Scrollview.minimumZoomScale = 0.6;
    self.Scrollview.frame = CGRectMake(self.Scrollview.frame.origin.x, self.Scrollview.frame.origin.y, self.Scrollview.frame.size.width, self.Scrollview.frame.size.height);
    [self.Scrollview setContentSize:CGSizeMake(imageLeft.frame.size.width, imageLeft.frame.size.height)];
    self.Scrollview.clipsToBounds = YES;
    self.Scrollview.delegate = self;
    [self.Scrollview setScrollEnabled:YES];
    [self.Scrollview addSubview:imageLeft];
}

if ([FrameString isEqualToString:@"RDB"]) {
    RightDownButton.hidden = YES;
    if (RightDown == nil) {
        RightDown = [[UIImageView alloc]initWithImage:pickedImage];
    }

    RightDown.frame = CGRectMake(0 , 0, RightDown.frame.size.width/3, RightDown.frame.size.height/3);
    self.scrollview1.maximumZoomScale = 0.9;
    self.scrollview1.minimumZoomScale = 0.6;
    self.scrollview1.frame = CGRectMake(self.scrollview1.frame.origin.x, self.scrollview1.frame.origin.y, self.scrollview1.frame.size.width, self.scrollview1.frame.size.height);
    [self.scrollview1 setContentSize:CGSizeMake(RightDown.frame.size.width, RightDown.frame.size.height)];
    self.scrollview1.clipsToBounds = YES;
    self.scrollview1.delegate = self;
    [self.scrollview1 setScrollEnabled:YES];
    [self.scrollview1 addSubview:RightDown];

}
if ([FrameString isEqualToString:@"RUB"]) {
    rightUpButton.hidden = YES;
    if (RightUp == nil) {
        RightUp = [[UIImageView alloc]initWithImage:pickedImage];
    }

    RightUp.frame = CGRectMake(0 , 0, RightUp.frame.size.width/3, RightUp.frame.size.height/3);
    self.scrollview2.maximumZoomScale = 0.9;
    self.scrollview2.minimumZoomScale = 0.6;
    self.scrollview2.frame = CGRectMake(self.scrollview2.frame.origin.x, self.scrollview2.frame.origin.y, self.scrollview2.frame.size.width, self.scrollview2.frame.size.height);
    [self.scrollview2 setContentSize:CGSizeMake(RightUp.frame.size.width, RightUp.frame.size.height)];
    self.scrollview2.clipsToBounds = YES;
    self.scrollview2.delegate = self;
    [self.scrollview2 setScrollEnabled:YES];
    [self.scrollview2 addSubview:RightUp];
}

Answer 1

缩放时，它为两个scrollViews调用相同的委托。因此，无论哪个scrollView进行缩放，委托方法中的所有内容都会实现。

解决此问题的一种简单方法是为两个滚动视图设置标记

喜欢self.Scrollview.tag = 1 adn self.scrollview1.tag = 2

检查scrollView委托方法中的标记

并仅在标签与您感兴趣的标签匹配时运行它。

例如： -

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{

if (scrollView.tag == TagYouAreInterestedIn){
    //do stuff

    }
   return view;
}

希望这有帮助。

缩放uiscrollview也可以缩放其中一个

1 个答案: