Added file delete option

Author: ackava

XamarinFileUploader.Droid/XamarinFileUploader.Droid.csproj

@@ -16,7 +16,7 @@
     <AndroidResgenFile>Resources\Resource.Designer.cs</AndroidResgenFile>
     <GenerateSerializationAssemblies>Off</GenerateSerializationAssemblies>
     <AndroidUseLatestPlatformSdk>false</AndroidUseLatestPlatformSdk>
-    <TargetFrameworkVersion>v7.1</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v8.1</TargetFrameworkVersion>
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
   </PropertyGroup>

XamarinFileUploader/FileUploaderService.cs

@@ -1,6 +1,7 @@
 using Newtonsoft.Json;
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Net.Http;
 using System.Text;
@@ -76,6 +77,35 @@ public void CancelUpload(string key) {
             OnCancel(r);
         }
 
+        public void DeleteRequest(string tag)
+        {
+            var req = this.Storage.Get().FirstOrDefault(x => x.Identifier == tag);
+            if (req == null) {
+                return;
+            }
+            try
+            {
+                if (!string.IsNullOrWhiteSpace(req.ResponseFilePath) && File.Exists(req.ResponseFilePath))
+                {
+                    File.Delete(req.ResponseFilePath);
+                }
+            } catch 
+            {
+
+            }
+
+            try
+            {
+                if (File.Exists(req.FilePath))
+                {
+                    File.Delete(req.FilePath);
+                }
+            } catch { }
+
+            this.Storage.Remove(req);
+            this.Storage.Save();
+        }
+
         public async Task StartUpload(string tag, string url, string method, HttpContent content) {
 
             FileUploadRequest request = new FileUploadRequest() {