Question

我正在尝试以编程方式使两个视图共享父视图的宽度。我曾尝试使用init作为子视图和initWithFrame，但在任何一种情况下，我都无法使拉伸正常工作。在下面的例子中，我希望看到一个红色窗口跨越屏幕宽度的一半，绿色窗口填充另一半。我错过了什么？

self.view = [[UIView alloc] initWithFrame:self.window.frame];
self.left = [[UIView alloc] init];
self.right = [[UIView alloc] init];

[self.left setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleHeight)];
[self.right setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleHeight)];

[self.view setBackgroundColor:[UIColor blueColor]];
[self.left setBackgroundColor:[UIColor redColor]];
[self.right setBackgroundColor:[UIColor greenColor]];

[self.left setContentMode:UIViewContentModeScaleToFill];
[self.right setContentMode:UIViewContentModeScaleToFill];


[self.view addSubview:self.left];
[self.view addSubview:self.right];
[self.view setAutoresizesSubviews:YES];

[self.window addSubview:self.view];

谢谢！

Answer 1

您永远不会设置2个视图的初始帧。

此代码已经过测试并在UIViewController中工作

- (void)viewDidLoad
{
    [super viewDidLoad];

    CGRect fullFrame = self.view.frame;

    // position left view
    CGRect leftFrame = fullFrame;
    leftFrame.size.width = leftFrame.size.width / 2;
    self.left = [[UIView alloc] initWithFrame:leftFrame];

    // position right view
    CGRect rightFrame = leftFrame;
    rightFrame.origin.x = rightFrame.size.width;
    self.right = [[UIView alloc] initWithFrame:rightFrame];

    [self.left setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleHeight)];
    [self.right setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleHeight)];

    [self.view setBackgroundColor:[UIColor blueColor]];
    [self.left setBackgroundColor:[UIColor redColor]];
    [self.right setBackgroundColor:[UIColor greenColor]];

    [self.left setContentMode:UIViewContentModeScaleToFill];
    [self.right setContentMode:UIViewContentModeScaleToFill];


    [self.view addSubview:self.left];
    [self.view addSubview:self.right];
    [self.view setAutoresizesSubviews:YES];
}

Answer 2

尝试设置您添加到主视图的子视图的一些初始帧。这应该有所帮助：

self.left.frame = CGRectMake(0, 0, self.window.frame.size.width/2, self.window.frame.size.height);
self.right.frame = CGRectMake(self.window.frame.size.width/2, 0 , self.window.frame.size.width/2, self.window.frame.size.height);

iOS：你如何制作两个UIViews自动填充空间？

2 个答案: