iphone - 调整UIView的大小

我有两个UIView，说containerView和testView。假设testView的宽度大于containerView的宽度。在这种情况下，当我将testView作为子视图添加到containerView时，出现了我的问题。 testView的帧超出了containerView的范围。这是我的代码-

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(60, 154, 200, 200)];
    containerView.backgroundColor = [UIColor grayColor];
    containerView.clipsToBounds = NO;

    UIView *testView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 260, 100)];
    testView.backgroundColor = [UIColor yellowColor];
    testView.layer.borderWidth = 3;
    testView.layer.borderColor = [[UIColor blackColor] CGColor];
    testView.center = CGPointMake(containerView.frame.size.width / 2, containerView.frame.size.height / 2);

    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(15, 25, 230, 50)];
    label.text = @"This is a Label to test the size";

    [testView addSubview:label];
    [containerView addSubview:testView];
    [self.view addSubview:containerView];
}

输出到此代码是-


当为containerView.clipsToBounds = YES;时，输出为-


但是我真正需要的是-
(编辑图像)

当我添加一个宽度/高度大于其superview- testView的containerView时，应调整testView(包括子项)的框架，以使其完全适合其父视图。

我欢迎您的想法..!

最佳答案

实现此目的的现代方法是创建视图，向该视图添加约束以建立与包含视图的关系，然后将该视图添加为子视图。

这样，您就不会在乎帧，并且将为您处理旋转大小的调整。

编辑以添加

这是一些示例代码，可以执行与您所要求的操作类似的操作

- (void)viewDidLoad {
    [super viewDidLoad];

    // Create the containing view
    UIView *greyView = [[UIView alloc] initWithFrame:CGRectZero];
    greyView.backgroundColor = [UIColor grayColor];
    greyView.translatesAutoresizingMaskIntoConstraints = NO;

    [self.view addSubview:greyView];

    // Create the label to go into the containing view
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectZero];
    label.translatesAutoresizingMaskIntoConstraints = NO;
    label.text = @"Example Text";

    label.backgroundColor = [UIColor yellowColor];

    [greyView addSubview:label];

    NSDictionary *bindings = NSDictionaryOfVariableBindings(greyView, label);

    // Set the constraints for the greyView relative to it's superview - to cover completely
    [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[greyView]|" options:NSLayoutFormatDirectionLeadingToTrailing metrics:nil views:bindings]];
    [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[greyView]|" options:NSLayoutFormatDirectionLeadingToTrailing metrics:nil views:bindings]];

    // Set the constraints for the label to be pinned equally with padding
    [greyView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-(30)-[label]-(30)-|" options:NSLayoutFormatDirectionLeadingToTrailing metrics:nil views:bindings]];
    [greyView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-(30)-[label]-(30)-|" options:NSLayoutFormatDirectionLeadingToTrailing metrics:nil views:bindings]];

}

如果您想实际使用它并自己调整约束，我已经上传了一个simple example project可供您使用。

关于iphone - 调整UIView的大小，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/19223959/