1 files changed, 82 insertions, 0 deletions
diff --git a/MusicDemo/src/main/java/com/example/android/musicservicedemo/QueueAdapter.java b/MusicDemo/src/main/java/com/example/android/musicservicedemo/QueueAdapter.java
new file mode 100644
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+++ b/MusicDemo/src/main/java/com/example/android/musicservicedemo/QueueAdapter.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2014 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.example.android.musicservicedemo;
+
+import android.app.Activity;
+import android.media.session.MediaSession;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import java.util.ArrayList;
+
+/**
+ * A list adapter for items in a queue
+ */
+public class QueueAdapter extends ArrayAdapter<MediaSession.QueueItem> {
+
+    // The currently selected/active queue item Id.
+    private long mActiveQueueItemId = MediaSession.QueueItem.UNKNOWN_ID;
+
+    public QueueAdapter(Activity context) {
+        super(context, R.layout.list_item, new ArrayList<MediaSession.QueueItem>());
+    }
+
+    public void setActiveQueueItemId(long id) {
+        this.mActiveQueueItemId = id;
+    }
+
+    private static class ViewHolder {
+        ImageView mImageView;
+        TextView mTitleView;
+        TextView mDescriptionView;
+    }
+
+    public View getView(int position, View convertView, ViewGroup parent) {
+        ViewHolder holder;
+
+        if (convertView == null) {
+            convertView = LayoutInflater.from(getContext())
+                    .inflate(R.layout.list_item, parent, false);
+            holder = new ViewHolder();
+            holder.mImageView = (ImageView) convertView.findViewById(R.id.play_eq);
+            holder.mTitleView = (TextView) convertView.findViewById(R.id.title);
+            holder.mDescriptionView = (TextView) convertView.findViewById(R.id.description);
+            convertView.setTag(holder);
+        } else {
+            holder = (ViewHolder) convertView.getTag();
+        }
+
+        MediaSession.QueueItem item = getItem(position);
+        holder.mTitleView.setText(item.getDescription().getTitle());
+        if (item.getDescription().getDescription() != null) {
+            holder.mDescriptionView.setText(item.getDescription().getDescription());
+        }
+
+        // If the itemId matches the active Id then use a different icon
+        if (mActiveQueueItemId == item.getQueueId()) {
+            holder.mImageView.setImageDrawable(
+                    getContext().getDrawable(R.drawable.ic_equalizer_white_24dp));
+        } else {
+            holder.mImageView.setImageDrawable(
+                    getContext().getDrawable(R.drawable.ic_play_arrow_white_24dp));
+        }
+        return convertView;
+    }
+}