无法在Xamarin.Forms中播放GIF图像(便携式)

问题描述：

我正在尝试使用Xamarin.Forms(便携式)项目播放GIF图像.我已经用以下代码实现了，但是无法播放GIF，因此我看不到静态图片.

I am trying to play the GIF images with the Xamarin.Forms (Portable) project. I have implemented with the following code but unable to Play GIF, I don't event see the static image.

此代码没有错误或崩溃，但是我看不到 GIF图片.

There is no error or crash in this code, but I am not able to see the GIF image.

代码中有什么问题吗?

接口:

public interface IGif
{
   string Get();
}

iOS实现:

[assembly: Dependency(typeof(GifView_iOS))]
namespace Project.iOS
{
 public class GifView_iOS : IGif
 {
   public string Get()
   {
     return NSBundle.MainBundle.BundlePath;
   }
 }
}

Android实现:

Android Implementation:

[assembly: Dependency(typeof(GifView_Droid))]
namespace Project.Droid
{
 public class GifView_Droid : IGif
 {
   public string Get()
   {
     return "file:///android_asset/";
   }
 }
}

GIF图片类:

public class Gif: WebView
{
    public string GifSource
    {
    set
    {
        string imgSource = DependencyService.Get<IGif>.Get() + value; 
        var html = new HtmlWebViewSource();
        html.Html = String.Format
            (@"<html><body style='background: #000000;'><img src='{0}' /></body></html>",
             imgSource);
        SetValue(SourceProperty, html);
    }
  }
}

最后，我已添加到StackLayout.

And Finally, I have added to the StackLayout.

Gif gifimage = new Gif();
gifimage.GifSource = "loading.gif";
StackGif.Children.Add(gifimage);

我尚未在iPhone中测试过此代码，也许它在iPhone中可以正常工作.

I have not tested this code in iPhone, maybe it is working in iPhone.

先谢谢您.

答

这是一个愚蠢的错误，我必须在Web视图中同时将Image的大小以及GIF类也设置为

This was the silly mistake, I have to give the size of Image inside web view and to GIF class also.

这是更新的代码.

我的GIF课:

public class Gif: WebView
{
    public string GifSource
    {
        set
        {
            string imgSource = DependencyService.Get<Dependency.IGif>().Get() + value;
            var html = new HtmlWebViewSource();
            html.Html = String.Format(@"<html><body><img src='{0}'  style='width: 100px; height: 100px;' /></body></html>", imgSource);
            SetValue(SourceProperty, html);
        }
    }
}

和ContentPage中的初始化:

and Initialization in ContentPage:

Helpers.Controls.Gif gifImage = new Helpers.Controls.Gif();
gifImage.GifSource = "loading.gif";
gifImage.HorizontalOptions = LayoutOptions.Center;
gifImage.VerticalOptions = LayoutOptions.FillAndExpand;
gifImage.HeightRequest = 120;
gifImage.BackgroundColor = Color.Transparent;
GridLoad.Children.Add(gifImage);

注意:我仍然在研究背景部分，因为它看起来像附加的图片，我想要Web视图中的透明背景.

Note: I am still working on the Background Part, as it is looking like attached image, I want the transparent background in web view.

图片:

无法在Xamarin.Forms中播放GIF图像(便携式)

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