ios6 - iOS7中的UIView实框

Question

我需要在 iOS 7 中添加一些视图。同时我的项目必须在 iOS 6 上运行。

我怎样才能以编程方式做到这一点？我想在 2 个版本的应用程序上看到“i”按钮的相同位置。

Answer 1

这是我放在 ViewController 上的一个类别。这可能不是最聪明的方法，但它适用于我的观点。我所有的应用程序都以编程方式构建 UI。如果在加载后将视图的框架设置为此，它将在 iOS 7 中与早期版本中的行为相同。该代码并不笨拙，因为它不依赖于版本，而是依赖于超级视图的特征。我愿意接受任何评论。

@implementation UIViewController (effectiveContentFrame)

// determine frame size and offset to get the max frame we can get for the current view and orientation
// needed this after the introduction of iOS 7 where frames are handled slightly differently
// note: it uses the different heights/widths at the current rotation


/*
 iOS 6 portrait
  application Frame: = (0.000000,20.000000) 320.000000x460.000000 )
  superview Frame = (0.000000,20.000000) 320.000000x460.000000 )

 iOS7 portrait
  application Frame: = (0.000000,20.000000) 320.000000x460.000000 )
  superview Frame = (0.000000,0.000000) 320.000000x480.000000 )

 */
- (CGRect) effectiveContentFrame
    {
    CGRect rect;
    UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;
    CGRect statusBarFrame = [UIApplication sharedApplication].statusBarFrame;
    CGFloat statusBarHeight = 0.;

    rect = self.view.superview.frame; // the frame will be relative to the superview. Note in iOS6 the root superview frame includes the

    if (UIInterfaceOrientationIsPortrait(orientation))
        {
        rect.size.height += rect.origin.y; // total height
        statusBarHeight = statusBarFrame.size.height;
        }
    else
        {
        rect.size.height += rect.origin.x; // total height
        statusBarHeight = statusBarFrame.size.width;
        }

    CGFloat extraHeight = 0;    // this is going to be how much extra height we have to take off of the total height of the frame,
                                // which is going to be the status bar+navbar+toolbar heights
    CGFloat topHeight = 0;      // this is the height of the stuff before the frame, which we are going to use as an offset


    if (![UIApplication sharedApplication].statusBarHidden)
        extraHeight += statusBarHeight;
   if (!self.navigationController.navigationBar.isHidden)
        extraHeight += self.navigationController.navigationBar.frame.size.height;
    topHeight = extraHeight;
    if (!self.navigationController.toolbar.isHidden)
        extraHeight += self.navigationController.toolbar.frame.size.height;

    rect.origin.y = topHeight - rect.origin.y;  // in iOS6 the status bar and navbar is already included in the origin but not in iOS7 .
    if (rect.origin.y < 0)
        rect.origin.y = 0;


    rect.size.height -= extraHeight;    // subtract status/nav and toolbar heights from the total height left in the superview

    return rect;
}

Answer 2

您的主视图的顶部栏类型似乎是半透明导航栏。尝试在 IB 中将其更改为不透明导航栏。

当我升级到新的 xCode 时，我遇到了同样的问题。我认为这是因为在旧版本中，不透明类型在列表中排在第一位，现在在它的位置上是半透明的。

此外，您可以尝试self.edgesForExtendedLayout = UIRectEdgeNone;在 UIViewController

Answer 3

在 Xcode 5 IB 中，您可以找到 iOS 6 / 7 增量。您所需要的只是调整它们。

Answer 4

C#中的答案

    public static RectangleF GetUsableContentSize(this UIViewController viewController) {
        RectangleF rect;
        UIInterfaceOrientation orientation = UIApplication.SharedApplication.StatusBarOrientation;
        RectangleF statusBarFrame = UIApplication.SharedApplication.StatusBarFrame;
        float statusBarHeight = 0.0f;

        var view = viewController.View;

        if (view.Superview != null)
            rect = view.Superview.Frame; // the frame will be relative to the superview. Note in iOS6 the root superview frame includes the
        else
            rect = view.Frame;


        if (orientation == UIInterfaceOrientation.Portrait || orientation == UIInterfaceOrientation.PortraitUpsideDown)
        {
            rect.Height += rect.Y; // total height
            statusBarHeight = statusBarFrame.Height;
        }
        else
        {
            rect.Height += rect.X; // total height
            statusBarHeight = statusBarFrame.Width;
        }

        float extraHeight = 0;    // this is going to be how much extra height we have to take off of the total height of the frame,
        // which is going to be the status bar+navbar+toolbar heights
        float topHeight = 0;      // this is the height of the stuff before the frame, which we are going to use as an offset


        if (!UIApplication.SharedApplication.StatusBarHidden)
            extraHeight += statusBarHeight;

        if (!viewController.NavigationController.NavigationBar.Hidden)
            extraHeight += viewController.NavigationController.NavigationBar.Frame.Height;

        topHeight = extraHeight;
        if (!viewController.NavigationController.Toolbar.Hidden)
            extraHeight += viewController.NavigationController.Toolbar.Frame.Height;

        rect.Y = topHeight - rect.Y;  // in iOS6 the status bar and navbar is already included in the origin but not in iOS7 .
        if (rect.Y < 0)
            rect.Y = 0;


        rect.Size.Height -= extraHeight;    // subtract status/nav and toolbar heights from the total height left in the superview

        return rect;
    }