字符串颜色Xamarin.Form [英] String to Color Xamarin.Form
本文介绍了字符串颜色Xamarin.Form的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何在xamarin.from中将字符串转换为颜色,没有Color.fromName方法?
How to convert string to color in xamarin.from , there isn't Color.fromName method ?
string colorStr = "Blue";
BoxView objBoxView = new BoxView
{
HeightRequest = double.Parse(HeightRequest),
HorizontalOptions = LayoutOptions.Fill,
VerticalOptions = LayoutOptions.End,
BackgroundColor = colorStr
};
推荐答案
Some examples using ColorTypeConverter with string values from the test TestColorTypeConverter in ColorUnitTests.cs in the Xamarin.Forms github:
var input = new[]
{
"blue", "Blue", "Color.Blue", // by name
"#0000ff", "#00f", // by hex code
"#a00f", // by hex code with alpha
"rgb(0,0, 255)", "rgb(0,0, 300)", // by RGB
"rgba(0%,0%, 100%, .8)", // by RGB percent with alpha
"hsl(240,100%, 50%)", // by HSL
"hsla(240,100%, 50%, .8)", // by HSL with alpha
"Accent", // by Accent color
"Default", "#12345" // not a valid color
};
ColorTypeConverter converter = new ColorTypeConverter();
foreach (var str in input)
{
Color color = (Color)(converter.ConvertFromInvariantString(str));
Debug.WriteLine("{0} is {1} Color", str, color.IsDefault ? "not a" : "a");
}
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