Question

我制作了一个带有两个文字标签和两个按钮的自定义UIView。它在创建时功能齐全，但现在我正在尝试在屏幕旋转时（即从纵向到横向）移动它。

即使UI元素似乎被正确移动，实际的UIView框架最终会做出奇怪的事情，比如当它原来是正方形并且被设置为正方形时变成矩形但是不同的x，y位置。

我是如何看到这一点的，方法是将我的UIView的背景颜色设置为黑色，然后观察我的背景图像是在绘制我想要绘制视图但是UIView的背景的地方。变成一个不同的形状，被绘制在错误的地方。

这是我的代码：

- (void) moveControls
{
    CGRect frame;

    UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
    switch (orientation)
    {
        case UIDeviceOrientationPortrait:
        case UIDeviceOrientationPortraitUpsideDown:
            frame = CGRectMake(0, 120, 320, 320);
            break;
        case UIDeviceOrientationLandscapeLeft:
        case UIDeviceOrientationLandscapeRight:
            frame = CGRectMake(120, 0, 320, 320);
            break;
        case UIDeviceOrientationFaceDown:
        case UIDeviceOrientationFaceUp:
        case UIDeviceOrientationUnknown:
           return;
    }

    [self setFrame:frame];

    backgroundImage.frame = CGRectMake(0,0, frame.size.width, frame.size.height);
    titleLabel.frame = CGRectMake(0,50,frame.size.width,frame.size.height/2);
    titleLabel.numberOfLines = 0;
    titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
    textLabel.frame = CGRectMake(0,frame.size.height/3,frame.size.width,frame.size.height/3);
    doneButton.frame = CGRectMake(frame.size.width - 154, frame.size.height - 90, 100, 34);
    tellButton.frame =CGRectMake(54, frame.size.height - 90, 100, 34);
}

Answer 1

没有真正回答所有问题，但解决了问题： ios: UIView's width and height after changing orientations is inaccurate?

view.center = view.superview.center;
view.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin |  UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin;

Answer 2

使用：

- (void) moveControls
{
    CGRect frame;

    UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
    if (UIDeviceOrientationIsLandscape(orientation))
        frame = CGRectMake(120, 0, 320, 320);
    else
        frame = CGRectMake(0, 120, 320, 320);



    [self setFrame:frame];

    backgroundImage.frame = CGRectMake(0,0, frame.size.width, frame.size.height);
    titleLabel.frame = CGRectMake(0,50,frame.size.width,frame.size.height/2);
    titleLabel.numberOfLines = 0;
    titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
    textLabel.frame = CGRectMake(0,frame.size.height/3,frame.size.width,frame.size.height/3);
    doneButton.frame = CGRectMake(frame.size.width - 154, frame.size.height - 90, 100, 34);
    tellButton.frame =CGRectMake(54, frame.size.height - 90, 100, 34);
}

更改方向时，UIView框架无法正确更新

2 个答案: