Thumbnail support

app/src/main/java/com/localtransfer/Transfer.java

@@ -289,6 +289,26 @@ public class Transfer {
         return fileList;
     }
 
+    public InputStream getThumbnail(String href) {
+        InputStream thumbnail = null;
+            URL url;
+            try {
+                String query = URLEncoder.encode(href, StandardCharsets.UTF_8.toString());
+                String serverUrl = root + "/thumbnail.php?file=" + query;
+                url = new URL(protocol, host, port, serverUrl);
+                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+                conn.setRequestMethod("GET");
+                conn.setConnectTimeout(2000);
+
+                conn.connect();
+
+                thumbnail = conn.getInputStream();
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        return thumbnail;
+    }
+
     public void downloadFile(final Uri uri, String name, long fileSize, String href, Button button) throws IOException {
 
         /*final LinearLayout layout = activity.findViewById(id);

app/src/main/java/com/localtransfer/fragment/DownloadFragment.java

@@ -4,6 +4,8 @@ import android.animation.ObjectAnimator;
 import android.content.ActivityNotFoundException;
 import android.content.ContentValues;
 import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
@@ -208,14 +210,19 @@ public class DownloadFragment extends Fragment {
 
                     switch (type) {
                         case "file-image":
-                            image.setImageResource(R.drawable.ic_icon_image);
+                        case "file-video":
+                            //image.setImageResource(R.drawable.ic_icon_image);
+                            new Thread(() -> {
+                                InputStream thumbnail = tr.getThumbnail(href);
+                                Bitmap bitmap = BitmapFactory.decodeStream(thumbnail);
+                                getActivity().runOnUiThread(() -> {
+                                        image.setImageBitmap(bitmap);
+                                });
+                            }).start();
                             break;
                         case "file-audio":
                             image.setImageResource(R.drawable.ic_icon_music);
                             break;
-                        case "file-video":
-                            image.setImageResource(R.drawable.ic_icon_video);
-                            break;
                         default:
                             image.setImageResource(R.drawable.ic_icon_file);
                     }