iPhone SDK：UIScrollView不滚动

Question

我只是无法让我的滚动视图实际滚动..一切都显示正常，除了它只是不会滚动.....这是我的代码：

- (void)viewDidLoad {
    [super viewDidLoad];

    UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 600)];
    scrollView.contentSize = CGSizeMake(320, 600);
    scrollView.scrollEnabled = YES;
    scrollView.clipsToBounds = YES;
    [self.view addSubview:scrollView];

    planView = [[WorkoutPlanView alloc] initWithImage:[UIImage imageNamed:@"WorkoutTable.png"]];
    planView2 = [[WorkoutPlanView alloc] initWithImage:[UIImage imageNamed:@"WorkoutTable.png"]];
    planView2.frame = CGRectMake(0, 164, 320, 165);
    planView3 = [[WorkoutPlanView alloc] initWithImage:[UIImage imageNamed:@"WorkoutTable.png"]];
    planView3.frame = CGRectMake(0, 328, 320, 165);
    planView4 = [[WorkoutPlanView alloc] initWithImage:[UIImage imageNamed:@"WorkoutTable.png"]];
    planView4.frame = CGRectMake(0, 505, 320, 165);
    [scrollView addSubview:planView];
    [scrollView addSubview:planView2];
    [scrollView addSubview:planView3];
    [scrollView addSubview:planView4];
}

我该如何解决这个问题？

Answer 1

contentSize必须大于scrollview的框架才能滚动任何内容。 :)

在这种情况下，它们都是(320, 600) 320,600 (320, 600)所以将scrollView的init更改为

UIScrollView *scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];

Answer 2

您的scrollview框架应该小于contentSize，因此只有您可以使scrollview可滚动。