Watchkit接口控制器38毫米和42毫米背景图像大小

Question

出于某种原因，我搜索了高和低，并且找不到我需要为38mm和42mm尺寸的Watchkit的背景图像提供的确切图像尺寸}。目前，我使用＆＃34;缩放来填充＆＃34;来缩小图像。

我不希望它被拉伸，所以我正在寻找真正的像素大小。

Answer 1

以下是我用来获取WKInterfaceController中背景图片大小的代码。我的应用程序有一个页面控件，你可能不想在结尾处添加额外的-14。

-(CGSize)backgroundSize
{
    CGRect contentFrame = self.contentFrame;
    CGSize size = contentFrame.size;
    CGFloat contentScale = 2.0;
    size.width *= contentScale;
    size.height *= contentScale;

    //I lined up the generated image with one in the simulator until
    //they perfectly matched.  I did this on both 38 and 42 mm.
    //I am not sure why they all came out to be off 4.

    //There is an offset of 10 in IB and I am not sure I need this
    //to be 4 to match perfect.
    size.height -= 4;

    //it looks like there is 2 pixels around the edge
    size.width -= 4;

    //Using page mode we need to take off an additional 14 pixels for the page dots at the bottom
    size.height -= 14;

    return size;
}