iphone - 带大图像的 UIScrollView

Question

此代码显示了 ScrollView ，但我想要显示的图像(教程)比 View 大。换句话说，tutorial.png 正好是 280X1200，但它不会宽高比。我在这里遗漏了一些小东西:

tipScroll = [[UIScrollView alloc]initWithFrame:CGRectMake(20, 10, 280, 1200)];
tipScroll.showsVerticalScrollIndicator = YES;
tipScroll.scrollEnabled = YES;
tipScroll.userInteractionEnabled = YES;

UIImageView *tutorialImageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"tutorial"]];

tipScroll.contentMode = UIViewContentModeScaleAspectFit;
tutorialImageView.contentMode = UIViewContentModeScaleAspectFit;

tipScroll.contentSize = tutorialImageView.frame.size;

[self.view addSubview:tipScroll];
[tipScroll addSubview:tutorialImageView];

Answer 1

请查看下面编辑后的代码。它会起作用

tipScroll = [[UIScrollView alloc]initWithFrame:CGRectMake(20, 10, 280, 1200)];
tipScroll.showsVerticalScrollIndicator = YES;
tipScroll.scrollEnabled = YES;
tipScroll.userInteractionEnabled = YES;

UIImageView *tutorialImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 280, 1200)];
tutorialImageView.image = [UIImage imageNamed:@"tutorial"];

tipScroll.contentSize = tutorialImageView.frame.size;
[tipScroll addSubview:tutorialImageView];
[self.view addSubview:tipScroll];