objective-c - Objective-C : Zooming UIScrollView Properly

Question

每当我缩放 View 时，我的 ScrollView 都会出现问题。 当我缩放 View 时，它会自动定位在左上角。我想要做的是 View 在移动后保持在原来的位置。

这是我的代码:

    mainSV = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 768, 1024)];
    [mainSV setPagingEnabled:YES];
    [mainSV setDelegate:self];
    [mainSV setShowsVerticalScrollIndicator:NO];
    [mainSV setShowsHorizontalScrollIndicator:NO];
    [mainSV setScrollEnabled:YES];
    [mainSV setUserInteractionEnabled:YES];
    [mainSV setMaximumZoomScale:2.0];
    [mainSV setMinimumZoomScale:1.0];
    [mainSV setMultipleTouchEnabled:YES];
    [mainSV setClipsToBounds:YES];
    [mainSV setContentSize:CGSizeMake(768, 1024)];
    [self.view addSubview:mainSV];

    innerSV = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 768, 1024)];
    [innerSV setPagingEnabled:YES];
    [innerSV setDelegate:self];
    [innerSV setShowsVerticalScrollIndicator:NO];
    [innerSV setShowsHorizontalScrollIndicator:NO];
    [innerSV setScrollEnabled:YES];
    [innerSV setUserInteractionEnabled:YES];
    [innerSV setClipsToBounds:YES];
    [innerSV setContentSize:CGSizeMake(768*numOfPages, 1024)];
    [mainSV addSubview:innerSV];

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

    return innerSV;
}

InnerSV 也是一个 UIScrollView，它包含我的应用程序中的所有图像。

Answer 1

问题是由 innerSV ScrollView 分页造成的。 将其设置为 FALSE，它应该可以工作。

干杯!