ios - ScrollView在ViewController中不起作用

我在ViewController中有两个标签，其中一个可以动态更改，因为数据的长度不同(我从JSON文件获取数据)。
我尝试使用self.automaticallyAdjustsScrollViewInsets = NO;但不起作用。
我在我的ViewController中添加了ScrollView。

- (void)viewDidLoad {
[super viewDidLoad];
self.automaticallyAdjustsScrollViewInsets = NO;
NSLog(@"hjgjgjk==%@",detailArray);

NSDictionary *dictionary = [detailArray mutableCopy];
expressionLabel.text = [dictionary objectForKey:@"expression"];

meaningLabel.text = [dictionary objectForKey:@"meaning"];

您能解释一下我该走哪条路？

最佳答案

希望您在scrollview上添加了标签。

将文字添加到标签后，请在下面一行添加。

self.automaticallyAdjustsScrollViewInsets = NO;

您的情况必须是

NSLog(@"hjgjgjk==%@",detailArray);

NSDictionary *dictionary = [detailArray mutableCopy];
expressionLabel.text = [dictionary objectForKey:@"expression"];

meaningLabel.text = [dictionary objectForKey:@"meaning"];

self.automaticallyAdjustsScrollViewInsets = NO;

我的建议如下:

UIScrollView *scrollView= [UIScrollView new];
    scrollView.translatesAutoresizingMaskIntoConstraints = NO;
    [self.view addSubview:scrollView];

    UILabel *scrollViewLabel = [[UILabel alloc] init];
    scrollViewLabel.numberOfLines = 0;
    scrollViewLabel.translatesAutoresizingMaskIntoConstraints = NO;
    [scrollView addSubview:scrollViewLabel];

    scrollViewLabel.text = @"Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.";


    /*** Auto Layout ***/

    NSDictionary *views = NSDictionaryOfVariableBindings(scrollView, scrollViewLabel);

    NSArray *scrollViewLabelConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|[scrollViewLabel(scrollView)]" options:0 metrics:nil views:views];
    [scrollView addConstraints:scrollViewLabelConstraints];

    scrollViewLabelConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[scrollViewLabel]|" options:0 metrics:nil views:views];
    [scrollView addConstraints:scrollViewLabelConstraints];

    NSArray *scrollViewConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[scrollView]-|" options:0 metrics:nil views:views];
    [self.view addConstraints:scrollViewConstraints];

    scrollViewConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-[scrollView]-|" options:0 metrics:nil views:views];
    [self.view addConstraints:scrollViewConstraints];

对于水平设置的两个(或更多视图)标签:

    UIScrollView *scrollView= [UIScrollView new];
    scrollView.translatesAutoresizingMaskIntoConstraints = NO;
    [self.view addSubview:scrollView];

    UILabel *scrollViewLabel = [[UILabel alloc] init];
    scrollViewLabel.numberOfLines = 0;
    scrollViewLabel.translatesAutoresizingMaskIntoConstraints = NO;
    [scrollView addSubview:scrollViewLabel];

    UILabel *scrollViewLabel2 = [[UILabel alloc] init];
    scrollViewLabel2.numberOfLines = 0;
    scrollViewLabel2.translatesAutoresizingMaskIntoConstraints = NO;
    [scrollView addSubview:scrollViewLabel2];

    scrollViewLabel.text = @"Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.Hello world.";


  scrollViewLabel2.text = @"Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.Hi there.";

    /*** Auto Layout ***/

     //scrollviewLabel
    NSDictionary *views = NSDictionaryOfVariableBindings(scrollView, scrollViewLabel, scrollViewLabel2);

    NSArray *scrollViewLabelConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|[scrollViewLabel(scrollView)]" options:0 metrics:nil views:views];
    [scrollView addConstraints:scrollViewLabelConstraints];

    scrollViewLabelConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|[scrollViewLabel]|" options:0 metrics:nil views:views];
    [scrollView addConstraints:scrollViewLabelConstraints];


    //scrollviewLabel2
    NSArray *scrollViewLabel2Constraints = [NSLayoutConstraint
                                 constraintsWithVisualFormat:@"|-[scrollViewLabel]-[scrollViewLabel2(==scrollViewLabel)]-|"
                                 options:NSLayoutFormatAlignAllBaseline metrics:nil
                                 views:views];
    [scrollView addConstraints:scrollViewLabel2Constraints];


    //scrollview
    NSArray *scrollViewConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[scrollView]-|" options:0 metrics:nil views:views];
    [self.view addConstraints:scrollViewConstraints];

    scrollViewConstraints = [NSLayoutConstraint constraintsWithVisualFormat:@"V:|-[scrollView]-|" options:0 metrics:nil views:views];
    [self.view addConstraints:scrollViewConstraints];

希望这可以帮助。

关于ios - ScrollView在ViewController中不起作用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/35575903/