Persist scroll position in Queue view, see AntennaPod/AntennaPod#551

1 files changed, 22 insertions, 1 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/QueueFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/QueueFragment.java
index ca8543b4c..bc00562aa 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/QueueFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/QueueFragment.java
@@ -2,8 +2,8 @@ package de.danoeh.antennapod.fragment;
 
 import android.app.Activity;
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.os.AsyncTask;
-import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.support.v4.app.Fragment;
@@ -65,6 +65,10 @@ public class QueueFragment extends Fragment {
     private boolean viewsCreated = false;
     private boolean isUpdatingFeeds = false;
 
+    private static final String PREFS = "QueueFragment";
+    private static final String PREF_KEY_LIST_TOP = "list_top";
+    private static final String PREF_KEY_LIST_SELECTION = "list_selection";
+
     private AtomicReference<Activity> activity = new AtomicReference<Activity>();
 
     private DownloadObserver downloadObserver = null;
@@ -103,6 +107,18 @@ public class QueueFragment extends Fragment {
     }
 
     @Override
+    public void onPause() {
+        super.onPause();
+        SharedPreferences prefs = getActivity().getSharedPreferences(PREFS, Context.MODE_PRIVATE);
+        SharedPreferences.Editor editor = prefs.edit();
+        View v = listView.getChildAt(0);
+        int top = (v == null) ? 0 : (v.getTop() - listView.getPaddingTop());
+        editor.putInt(PREF_KEY_LIST_SELECTION, listView.getFirstVisiblePosition());
+        editor.putInt(PREF_KEY_LIST_TOP, top);
+        editor.commit();
+    }
+
+    @Override
     public void onStop() {
         super.onStop();
         EventDistributor.getInstance().unregister(contentUpdate);
@@ -313,6 +329,11 @@ public class QueueFragment extends Fragment {
         }
         listAdapter.notifyDataSetChanged();
 
+        SharedPreferences prefs = getActivity().getSharedPreferences(PREFS, Context.MODE_PRIVATE);
+        int listSelection = prefs.getInt(PREF_KEY_LIST_SELECTION, 0);
+        int top = prefs.getInt(PREF_KEY_LIST_TOP, 0);
+        listView.setSelectionFromTop(listSelection, top);
+
         // we need to refresh the options menu because it sometimes
         // needs data that may have just been loaded.
         getActivity().supportInvalidateOptionsMenu();