Merge branch 'master' into wifiOnly

android/src/main/java/com/RNFetchBlob/RNFetchBlobFS.java

         }
         else {
             path = normalizePath(path);
-            boolean exist = new File(path).exists();
-            boolean isDir = new File(path).isDirectory();
-            callback.invoke(exist, isDir);
+            if (path != null) {
+                boolean exist = new File(path).exists();
+                boolean isDir = new File(path).isDirectory();
+                callback.invoke(exist, isDir);
+            }
+            else {
+                callback.invoke(false, false);
+            }
         }
     }
 

android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java

             if (options.addAndroidDownloads.getBoolean("useDownloadManager")) {
                 Uri uri = Uri.parse(url);
                 DownloadManager.Request req = new DownloadManager.Request(uri);
-                if(options.addAndroidDownloads.getBoolean("notification")) {
+                if(options.addAndroidDownloads.hasKey("notification") && options.addAndroidDownloads.getBoolean("notification")) {
                     req.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
                 } else {
                     req.setNotificationVisibility(DownloadManager.Request.VISIBILITY_HIDDEN);
                             String utf8 = new String(b);
                             callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_UTF8, utf8);
                         }
-                        // This usually mean the data is contains invalid unicode characters, it's
-                        // binary data
+                        // This usually mean the data is contains invalid unicode characters but still valid data,
+                        // it's binary data, so send it as a normal string
                         catch(CharacterCodingException ignored) {
+                            
                             if(responseFormat == ResponseFormat.UTF8) {
-                                callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_UTF8, "");
+                                String utf8 = new String(b);
+                                callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_UTF8, utf8);
                             }
                             else {
                                 callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_BASE64, android.util.Base64.encodeToString(b, Base64.NO_WRAP));

index.js

  *                   activity takes place )
  *                   If it doesn't exist, the file is downloaded as usual
  *         @property {number} timeout
- *                   Request timeout in millionseconds, by default it's 30000ms.
+ *                   Request timeout in millionseconds, by default it's 60000ms.
  *         @property {boolean} followRedirect
  *                   Follow redirects automatically, default true
  *         @property {boolean} trusty