Show error view in TrendingActivity.

app/src/main/java/ml/docilealligator/infinityforreddit/activities/TrendingActivity.java

@@ -9,6 +9,9 @@ import android.util.DisplayMetrics;
 import android.view.View;
 import android.view.Window;
 import android.view.WindowManager;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.appcompat.widget.Toolbar;
@@ -17,6 +20,7 @@ import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 
+import com.bumptech.glide.Glide;
 import com.google.android.material.appbar.AppBarLayout;
 import com.google.android.material.appbar.CollapsingToolbarLayout;
 import com.r0adkll.slidr.Slidr;
@@ -67,6 +71,12 @@ public class TrendingActivity extends BaseActivity {
     SwipeRefreshLayout swipeRefreshLayout;
     @BindView(R.id.recycler_view_trending_activity)
     RecyclerView recyclerView;
+    @BindView(R.id.fetch_trending_search_linear_layout_trending_activity)
+    LinearLayout errorLinearLayout;
+    @BindView(R.id.fetch_trending_search_image_view_trending_activity)
+    ImageView errorImageView;
+    @BindView(R.id.fetch_trending_search_text_view_trending_activity)
+    TextView errorTextView;
     @Inject
     @Named("oauth")
     Retrofit mOauthRetrofit;
@@ -164,6 +174,8 @@ public class TrendingActivity extends BaseActivity {
     }
 
     private void loadTrendingSearches() {
+        errorLinearLayout.setVisibility(View.GONE);
+        Glide.with(this).clear(errorImageView);
         swipeRefreshLayout.setRefreshing(true);
         trendingSearches = null;
         adapter.setTrendingSearches(null);
@@ -206,12 +218,14 @@ public class TrendingActivity extends BaseActivity {
                             e.printStackTrace();
                             handler.post(() -> {
                                 swipeRefreshLayout.setRefreshing(false);
+                                showErrorView(R.string.error_parse_trending_search);
                             });
                         }
                     });
                 } else {
                     handler.post(() -> {
                         swipeRefreshLayout.setRefreshing(false);
+                        showErrorView(R.string.error_fetch_trending_search);
                     });
                 }
             }
@@ -220,11 +234,18 @@ public class TrendingActivity extends BaseActivity {
             public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
                 handler.post(() -> {
                     swipeRefreshLayout.setRefreshing(false);
+                    showErrorView(R.string.error_fetch_trending_search);
                 });
             }
         });
     }
 
+    private void showErrorView(int stringId) {
+        errorLinearLayout.setVisibility(View.VISIBLE);
+        Glide.with(this).load(R.drawable.error_image).into(errorImageView);
+        errorTextView.setText(stringId);
+    }
+
     @Override
     protected SharedPreferences getDefaultSharedPreferences() {
         return mSharedPreferences;
@@ -241,6 +262,7 @@ public class TrendingActivity extends BaseActivity {
         applyAppBarLayoutAndToolbarTheme(appBarLayout, toolbar);
         swipeRefreshLayout.setProgressBackgroundColorSchemeColor(mCustomThemeWrapper.getCircularProgressBarBackground());
         swipeRefreshLayout.setColorSchemeColors(mCustomThemeWrapper.getColorAccent());
+        errorTextView.setTextColor(mCustomThemeWrapper.getSecondaryTextColor());
     }
 
     @Subscribe

app/src/main/res/layout/activity_trending.xml

@@ -46,4 +46,30 @@
 
     </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
 
+    <LinearLayout
+        android:id="@+id/fetch_trending_search_linear_layout_trending_activity"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginTop="48dp"
+        android:layout_marginBottom="48dp"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:visibility="gone">
+
+        <ImageView
+            android:id="@+id/fetch_trending_search_image_view_trending_activity"
+            android:layout_width="150dp"
+            android:layout_height="wrap_content" />
+
+        <TextView
+            android:id="@+id/fetch_trending_search_text_view_trending_activity"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:gravity="center"
+            android:textSize="?attr/font_default"
+            android:fontFamily="?attr/font_family" />
+
+    </LinearLayout>
+
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

app/src/main/res/values/strings.xml

@@ -1146,4 +1146,8 @@
 
     <string name="please_wait_image_is_uploading">An image is still being uploaded. Please wait.</string>
 
+    <string name="error_fetch_trending_search">Fetch trending searches failed.\nTap to retry.</string>
+    <string name="error_parse_trending_search">Parse trending searches failed.\nTap to retry.</string>
+    <string name="no_trending_search">No trending searches found.\nTap to retry.</string>
+
 </resources>