更改每个屏幕尺寸xamarin形式的标签大小

Question

我正在使用xamarin.forms来做一个应用程序我觉得使用相同的大小来写信给ios设备是行不通的:在7加上它运行良好,但在iPhone 5上它是一个大字母的屏幕大小...有人知道如何使用可伸缩大小的字母,或更改特定设备或屏幕大小类型的大小？非常感谢你.

Answer 1

您可以参考以下样本:

1. 估计字体大小以获得视觉一致性 - (docs | github)

   // Resolution in device-independent units per inch.
   double resolution = 160;
   
   // Do some numeric point sizes.
   int[] ptSizes = { 4, 6, 8, 10, 12 };
   
   // Select numeric point size you need from ptSize[] array 
   double ptSize = 4;
   
   // this is your new visually consistent font-size.
   var fontSize = resolution * ptSize / 72; 
   

2. 将文本拟合为可用大小 - (docs | github)

   double lineHeight = Device.OnPlatform(1.2, 1.2, 1.3);//TODO: Change this to Device.RuntimePlatform
   double charWidth = 0.5;
   
   int charCount = text.Length;
   
   var view = this.Parent;
   // Because:
   //   lineCount = view.Height / (lineHeight * fontSize)
   //   charsPerLine = view.Width / (charWidth * fontSize)
   //   charCount = lineCount * charsPerLine
   // Hence, solving for fontSize:
   int fontSize = (int)Math.Sqrt(view.Width * view.Height /
                       (charCount * lineHeight * charWidth));