flutter#1 - Fixing GIF being exported as JPG issue

Author: raymondctc

packages/image_picker/image_picker/android/src/main/java/io/flutter/plugins/imagepicker/FileUtils.java

@@ -71,9 +71,12 @@ private static String getImageExtension(Uri uriImage) {
     String extension = null;
 
     try {
-      String imagePath = uriImage.getPath();
+      final String imagePath = uriImage.getPath();
       if (imagePath != null && imagePath.lastIndexOf(".") != -1) {
         extension = imagePath.substring(imagePath.lastIndexOf(".") + 1);
+      } else if (imagePath != null && imagePath.lastIndexOf(".") == -1) {
+        final MimeTypeMap mime = MimeTypeMap.getSingleton();
+        extension = mime.getExtensionFromMimeType(context.getContentResolver().getType(uri));
       }
     } catch (Exception e) {
       extension = null;

packages/image_picker/image_picker/android/src/main/java/io/flutter/plugins/imagepicker/ImagePickerDelegate.java

@@ -14,6 +14,7 @@
 import android.net.Uri;
 import android.os.Build;
 import android.provider.MediaStore;
+import android.webkit.MimeTypeMap;
 import androidx.annotation.VisibleForTesting;
 import androidx.core.app.ActivityCompat;
 import androidx.core.content.FileProvider;
@@ -548,6 +549,11 @@ public void onPathReady(String path) {
 
   private void handleImageResult(String path, boolean shouldDeleteOriginalIfScaled) {
     if (methodCall != null) {
+      if (path.toLowerCase().endsWith(".gif")) {
+        finishWithSuccess(path);
+        return;
+      }
+
       Double maxWidth = methodCall.argument("maxWidth");
       Double maxHeight = methodCall.argument("maxHeight");
       Integer imageQuality = methodCall.argument("imageQuality");