From 9c40031300d4aa6154f720c9988de4d5dcc44bac Mon Sep 17 00:00:00 2001
From: tibbi <tibor@kaputa.sk>
Date: Wed, 13 Jul 2016 22:51:38 +0200
Subject: [PATCH] implement Pull to refresh

---
 .../filemanager/fragments/ItemsFragment.java  | 22 ++++++++++++++++---
 app/src/main/res/layout/items_fragment.xml    | 15 ++++++++-----
 2 files changed, 29 insertions(+), 8 deletions(-)

diff --git a/app/src/main/java/com/simplemobiletools/filemanager/fragments/ItemsFragment.java b/app/src/main/java/com/simplemobiletools/filemanager/fragments/ItemsFragment.java
index 07b1d17a..ba7f94c1 100644
--- a/app/src/main/java/com/simplemobiletools/filemanager/fragments/ItemsFragment.java
+++ b/app/src/main/java/com/simplemobiletools/filemanager/fragments/ItemsFragment.java
@@ -5,6 +5,7 @@ import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
+import android.support.v4.widget.SwipeRefreshLayout;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -27,8 +28,10 @@ import java.util.List;
 import butterknife.BindView;
 import butterknife.ButterKnife;
 
-public class ItemsFragment extends android.support.v4.app.Fragment implements AdapterView.OnItemClickListener {
+public class ItemsFragment extends android.support.v4.app.Fragment
+        implements AdapterView.OnItemClickListener, SwipeRefreshLayout.OnRefreshListener {
     @BindView(R.id.items_list) ListView mListView;
+    @BindView(R.id.items_swipe_refresh) SwipeRefreshLayout mSwipeRefreshLayout;
 
     private List<FileDirItem> mItems;
     private ItemInteractionListener mListener;
@@ -46,7 +49,9 @@ public class ItemsFragment extends android.support.v4.app.Fragment implements Ad
     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
         mShowHidden = Config.newInstance(getContext()).getShowHidden();
+        mItems = new ArrayList<>();
         fillItems();
+        mSwipeRefreshLayout.setOnRefreshListener(this);
     }
 
     @Override
@@ -60,8 +65,13 @@ public class ItemsFragment extends android.support.v4.app.Fragment implements Ad
 
     private void fillItems() {
         final String path = getArguments().getString(Constants.PATH);
-        mItems = getItems(path);
-        Collections.sort(mItems);
+        final List<FileDirItem> newItems = getItems(path);
+        Collections.sort(newItems);
+        if (mItems != null && newItems.toString().equals(mItems.toString())) {
+            return;
+        }
+
+        mItems = newItems;
 
         final ItemsAdapter adapter = new ItemsAdapter(getContext(), mItems);
         mListView.setAdapter(adapter);
@@ -108,6 +118,12 @@ public class ItemsFragment extends android.support.v4.app.Fragment implements Ad
         }
     }
 
+    @Override
+    public void onRefresh() {
+        fillItems();
+        mSwipeRefreshLayout.setRefreshing(false);
+    }
+
     public interface ItemInteractionListener {
         void itemClicked(String path);
     }
diff --git a/app/src/main/res/layout/items_fragment.xml b/app/src/main/res/layout/items_fragment.xml
index dfd750ef..afe2e9fa 100644
--- a/app/src/main/res/layout/items_fragment.xml
+++ b/app/src/main/res/layout/items_fragment.xml
@@ -5,11 +5,16 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <ListView
-        android:id="@+id/items_list"
+    <android.support.v4.widget.SwipeRefreshLayout
+        android:id="@+id/items_swipe_refresh"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:clipToPadding="false"
-        android:paddingLeft="@dimen/activity_margin"/>
+        android:layout_height="wrap_content">
 
+        <ListView
+            android:id="@+id/items_list"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:clipToPadding="false"
+            android:paddingLeft="@dimen/activity_margin"/>
+    </android.support.v4.widget.SwipeRefreshLayout>
 </RelativeLayout>