Implemented drag & drop reordering

res/layout/organize_queue.xml

@@ -0,0 +1,35 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:dslv="http://schemas.android.com/apk/res/de.danoeh.antennapod"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:orientation="vertical" >
+
+    <com.mobeta.android.dslv.DragSortListView
+        android:id="@android:id/list"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_margin="10dp"
+        android:layout_weight="1"
+        dslv:collapsed_height="2dp"
+        dslv:drag_enabled="true"
+        dslv:drag_handle_id="@id/drag_handle"
+        dslv:drag_scroll_start="0.33"
+        dslv:drag_start_mode="onDown"
+        dslv:float_alpha="0.6"
+        dslv:max_drag_scroll_speed="0.5"
+        dslv:remove_enabled="true"
+        dslv:remove_mode="flingRemove"
+        dslv:slide_shuffle_speed="0.3"
+        dslv:sort_enabled="true"
+        dslv:track_drag_sort="false"
+        dslv:use_default_controller="true" />
+
+    <TextView
+        android:id="@id/android:empty"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"
+        android:gravity="center"
+        android:text="@string/no_feeds_label" />
+
+</LinearLayout>

res/layout/organize_queue_listitem.xml

@@ -11,7 +11,7 @@
         android:scaleType="centerCrop" />
 
     <View
-        android:id="@+id/dragHandle"
+        android:id="@id/drag_handle"
         android:layout_width="@dimen/dragview_length"
         android:layout_height="@dimen/dragview_length"
         android:layout_alignParentRight="true"
@@ -32,7 +32,7 @@
         android:layout_alignParentTop="true"
         android:layout_marginLeft="8dp"
         android:layout_marginTop="8dp"
-        android:layout_toLeftOf="@id/dragHandle"
+        android:layout_toLeftOf="@id/drag_handle"
         android:layout_toRightOf="@id/imgvFeedimage"
         android:ellipsize="end"
         android:lines="2"
@@ -46,7 +46,7 @@
         android:layout_below="@id/txtvTitle"
         android:layout_marginLeft="8dp"
         android:layout_marginRight="8dp"
-        android:layout_toLeftOf="@id/dragHandle"
+        android:layout_toLeftOf="@id/drag_handle"
         android:layout_toRightOf="@id/imgvFeedimage"
         android:ellipsize="end"
         android:maxLines="1"

res/values/ids.xml

@@ -10,5 +10,5 @@
     <item name="download_all_item" type="id"/>
     <item name="clear_history_item" type="id"/>
     <item name="organize_queue_item" type="id"/>
-
+	<item name="drag_handle" type="id" />
 </resources>

src/de/danoeh/antennapod/activity/OrganizeQueueActivity.java

@@ -2,7 +2,10 @@ package de.danoeh.antennapod.activity;
 
 import java.util.List;
 
+import android.content.BroadcastReceiver;
 import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.res.TypedArray;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -15,6 +18,7 @@ import android.widget.TextView;
 import com.actionbarsherlock.app.SherlockListActivity;
 import com.actionbarsherlock.view.Menu;
 import com.actionbarsherlock.view.MenuItem;
+import com.mobeta.android.dslv.DragSortListView;
 
 import de.danoeh.antennapod.PodcastApp;
 import de.danoeh.antennapod.R;
@@ -33,12 +37,66 @@ public class OrganizeQueueActivity extends SherlockListActivity {
 	protected void onCreate(Bundle savedInstanceState) {
 		setTheme(PodcastApp.getThemeResourceId());
 		super.onCreate(savedInstanceState);
+		setContentView(R.layout.organize_queue);
+
+		DragSortListView listView = (DragSortListView) getListView();
+		listView.setDropListener(dropListener);
+		listView.setRemoveListener(removeListener);
 
 		adapter = new OrganizeAdapter(this, 0, FeedManager.getInstance()
 				.getQueue());
 		setListAdapter(adapter);
 	}
 
+	@Override
+	protected void onPause() {
+		super.onPause();
+		try {
+			unregisterReceiver(contentUpdate);
+		} catch (IllegalArgumentException e) {
+
+		}
+	}
+
+	@Override
+	protected void onResume() {
+		super.onResume();
+		IntentFilter filter = new IntentFilter(FeedManager.ACTION_QUEUE_UPDATE);
+		filter.addAction(FeedManager.ACTION_FEED_LIST_UPDATE);
+		registerReceiver(contentUpdate, filter);
+	}
+
+	private BroadcastReceiver contentUpdate = new BroadcastReceiver() {
+
+		@Override
+		public void onReceive(Context context, Intent intent) {
+			if (adapter != null) {
+				adapter.notifyDataSetChanged();
+			}
+		}
+
+	};
+
+	private DragSortListView.DropListener dropListener = new DragSortListView.DropListener() {
+
+		@Override
+		public void drop(int from, int to) {
+			FeedManager manager = FeedManager.getInstance();
+			manager.moveQueueItem(OrganizeQueueActivity.this, from, to, false);
+			adapter.notifyDataSetChanged();
+		}
+	};
+
+	private DragSortListView.RemoveListener removeListener = new DragSortListView.RemoveListener() {
+
+		@Override
+		public void remove(int which) {
+			FeedManager manager = FeedManager.getInstance();
+			manager.removeQueueItem(OrganizeQueueActivity.this,
+					(FeedItem) getListAdapter().getItem(which));
+		}
+	};
+
 	@Override
 	public boolean onCreateOptionsMenu(Menu menu) {
 		super.onCreateOptionsMenu(menu);
@@ -112,7 +170,6 @@ public class OrganizeQueueActivity extends SherlockListActivity {
 			TextView title;
 			TextView feedTitle;
 			ImageView feedImage;
-			View dragHandle;
 		}
 
 	}

src/de/danoeh/antennapod/feed/FeedManager.java

@@ -765,16 +765,29 @@ public class FeedManager {
 		}
 	}
 
-	public void moveQueueItem(final Context context, FeedItem item, int delta) {
+	/**
+	 * Moves the queue item at the specified index to another position. If the
+	 * indices are out of range, no operation will be performed.
+	 * 
+	 * @param from
+	 *            index of the item that is going to be moved
+	 * @param to
+	 *            destination index of item
+	 * @param broadcastUpdate
+	 *            true if the method should send a queue update broadcast after
+	 *            the operation has been performed. This should be set to false
+	 *            if the order of the queue is changed through drag & drop
+	 *            reordering to avoid visual glitches.
+	 */
+	public void moveQueueItem(final Context context, int from, int to,
+			boolean broadcastUpdate) {
 		if (AppConfig.DEBUG)
-			Log.d(TAG, "Moving queue item");
-		int itemIndex = queue.indexOf(item);
-		int newIndex = itemIndex + delta;
-		if (newIndex >= 0 && newIndex < queue.size()) {
-			FeedItem oldItem = queue.set(newIndex, item);
-			queue.set(itemIndex, oldItem);
+			Log.d(TAG, "Moving queue item from index " + from + " to index "
+					+ to);
+		if (from >= 0 && from < queue.size() && to >= 0 && to < queue.size()) {
+			FeedItem item = queue.remove(from);
+			queue.add(to, item);
 			dbExec.execute(new Runnable() {
-
 				@Override
 				public void run() {
 					PodDBAdapter adapter = new PodDBAdapter(context);
@@ -783,10 +796,11 @@ public class FeedManager {
 					adapter.close();
 				}
 			});
-
-		}
+			if (broadcastUpdate) {
 				sendQueueUpdateBroadcast(context, item);
 			}
+		}
+	}
 
 	public boolean isInQueue(FeedItem item) {
 		return queue.contains(item);

src/de/danoeh/antennapod/fragment/EpisodesFragment.java

@@ -63,6 +63,9 @@ public class EpisodesFragment extends SherlockFragment {
 		filter.addAction(FeedManager.ACTION_FEED_LIST_UPDATE);
 
 		getActivity().registerReceiver(contentUpdate, filter);
+		if (adapter != null) {
+			adapter.notifyDataSetChanged();
+		}
 	}
 
 	@Override