ScrollView在ViewController中不起作用

时间：2016-02-23 11:08:41

标签： ios objective-c uiscrollview

我在ViewController中有两个标签，其中一个是动态更改的，因为数据长度不同（我从JSON文件中获取数据）。 我试过用 self.automaticallyAdjustsScrollViewInsets = NO; 但是没有用。 我将ScrollView添加到了我的ViewController。

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

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

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

你能解释一下我应该走哪条路？

1 个答案:

答案 0 :(得分：1)

我希望你在scrollview上添加了标签。

请在向标签添加文字后添加以下行。

self.automaticallyAdjustsScrollViewInsets = NO;

在你的情况下必须是

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

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

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

self.automaticallyAdjustsScrollViewInsets = NO;

我这样做的建议如下：

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];

水平设置的两个（或多个视图）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];

希望这有帮助。

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