Question

- (void)viewDidLoad
{
MyData *data = [MyData SharedData];

scrollerView.pagingEnabled = YES;
scrollerView.bounces = YES;

int numberOfViews = [data.placePhotos count];
for (int i = 0; i < numberOfViews; i++) {

    CGFloat yOrigin = i * self.view.frame.size.width;
    UIView *awesomeView = [[UIView alloc] initWithFrame:CGRectMake(yOrigin, 0, self.view.frame.size.width, self.view.frame.size.height)];
    awesomeView.backgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:1];

    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 0, 300 , 320)];

    NSString * photourl = [[data.placePhotos objectAtIndex:i] stringByReplacingOccurrencesOfString:@"150x75" withString:@"440x440"];

    [imageView setImageWithURL:[NSURL URLWithString:photourl]];
    [awesomeView addSubview:imageView];

    [scrollerView addSubview:awesomeView];
    awesomeView = nil;
    imageView =nil;
}

我在.xib文件中添加了UIScrollView，当我试图从左向右拉动滚动视图时它没有移动，我添加了4个子视图，但为什么我无法查看它们？

Answer 1

你应该设置scrollView的内容大小

     [self. scrollerView setContentSize:CGSizeMake(320, 1000)];

给你的宽度和高度。

Answer 2

在循环之后添加scrollerView.contentSize = CGSizeMake(yOrigin + self.view.frame.size.width, scrollerView.frame.size.height);（尽管我对你的代码中为什么x-origin被称为yOrigin感到有点困惑...）

UIScrollView添加的子视图但无法滑动到它们

2 个答案: