Addition: Pull down to refresh in nearby activity (commons-app#1164)

* added pull down to refresh in nearby activity

* Requested changes made

Author: 97balakrishnan

app/src/main/java/fr/free/nrw/commons/nearby/NearbyActivity.java

@@ -10,6 +10,7 @@
 import android.support.annotation.NonNull;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentTransaction;
+import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.app.AlertDialog;
 import android.view.Menu;
 import android.view.MenuInflater;
@@ -60,7 +61,7 @@ public class NearbyActivity extends NavigationBaseActivity implements LocationUp
     private NearbyActivityMode viewMode;
     private Disposable placesDisposable;
     private boolean lockNearbyView; //Determines if the nearby places needs to be refreshed
-
+    @BindView(R.id.swipe_container) SwipeRefreshLayout swipeLayout;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -70,6 +71,13 @@ protected void onCreate(Bundle savedInstanceState) {
         bundle = new Bundle();
         initDrawer();
         initViewState();
+        swipeLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
+            @Override
+            public void onRefresh() {
+                lockNearbyView(false);
+                refreshView(true);
+            }
+        });
     }
 
     private void initViewState() {
@@ -309,7 +317,7 @@ private void populatePlaces(List<Place> placeList) {
         } else {
             setListFragment();
         }
-
+        swipeLayout.setRefreshing(false);
         hideProgressBar();
     }
 

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

@@ -21,17 +21,19 @@
             android:orientation="horizontal"
             android:gravity="center_vertical"
             android:layout_below="@id/toolbar">
-
             <ProgressBar
                 android:id="@+id/progressBar"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content" />
-
+            <android.support.v4.widget.SwipeRefreshLayout
+                android:id="@+id/swipe_container"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent">
             <FrameLayout
                 android:id="@+id/container"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent" />
-
+            </android.support.v4.widget.SwipeRefreshLayout>
         </LinearLayout>
     </RelativeLayout>