From b9acff6c2f737dfd00a90df857d772f159df23d4 Mon Sep 17 00:00:00 2001
From: chiften <chif.j@gmail.com>
Date: Sun, 3 May 2020 18:55:37 +0430
Subject: [PATCH] add a network response error checker to
 networkBoundResource.java

---
 .../data/NetworkBoundResource.java                 | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/iammert/com/androidarchitecture/data/NetworkBoundResource.java b/app/src/main/java/iammert/com/androidarchitecture/data/NetworkBoundResource.java
index a37044b..c6c6e86 100644
--- a/app/src/main/java/iammert/com/androidarchitecture/data/NetworkBoundResource.java
+++ b/app/src/main/java/iammert/com/androidarchitecture/data/NetworkBoundResource.java
@@ -50,7 +50,19 @@ private void fetchFromNetwork(final LiveData<ResultType> dbSource) {
             @Override
             public void onResponse(Call<RequestType> call, Response<RequestType> response) {
                 result.removeSource(dbSource);
-                saveResultAndReInit(response.body());
+                if(response.isSuccessful()) {
+                    saveResultAndReInit(response.body());
+                    return;
+                }
+                result.addSource(dbSource, newData->{
+                    try {
+                        result.setValue(Resource.error(response.errorBody().string(), newData));
+                    } catch (IOException e) {
+
+                        // reload from disk whatever we had
+                        result.setValue(Resource.success(newData));
+                    }
+                });
             }
 
             @Override