Switch to recyclerview in ManageApplications

- Replace ListView with RecyclerView in layout
- Replace ApplicationAdapter's superclass to be RecyclerView.Adapter
- Change adapter interfaces (where necessary) to work with RecyclerView
- Replace fast scroll with Recycler's mechanism (all in xml)
- Removed section indexer (text bubble when fast scroll) because
  recyclerview doesn't support it.

Bug: 64804294
Test: robotests
Change-Id: I55b221836ce6abdeddf4568c8a8a5632cbddbd3b

src/com/android/settings/development/AppViewHolder.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.development;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.android.settings.R;
+import com.android.settingslib.applications.ApplicationsState;
+
+// View Holder used when displaying views
+public class AppViewHolder {
+    public ApplicationsState.AppEntry entry;
+    public View rootView;
+    public TextView appName;
+    public ImageView appIcon;
+    public TextView summary;
+    public TextView disabled;
+
+    static public AppViewHolder createOrRecycle(LayoutInflater inflater, View convertView) {
+        if (convertView == null) {
+            convertView = inflater.inflate(R.layout.preference_app, null);
+            inflater.inflate(R.layout.widget_text_views,
+                    (ViewGroup) convertView.findViewById(android.R.id.widget_frame));
+
+            // Creates a ViewHolder and store references to the two children views
+            // we want to bind data to.
+            AppViewHolder holder = new AppViewHolder();
+            holder.rootView = convertView;
+            holder.appName = (TextView) convertView.findViewById(android.R.id.title);
+            holder.appIcon = (ImageView) convertView.findViewById(android.R.id.icon);
+            holder.summary = (TextView) convertView.findViewById(R.id.widget_text1);
+            holder.disabled = (TextView) convertView.findViewById(R.id.widget_text2);
+            convertView.setTag(holder);
+            return holder;
+        } else {
+            // Get the ViewHolder back to get fast access to the TextView
+            // and the ImageView.
+            return (AppViewHolder)convertView.getTag();
+        }
+    }
+}