Add an empty view when the track list is empty.

MyTracks/res/layout/track_list.xml

@@ -14,12 +14,35 @@ 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.
 -->
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_height="fill_parent"
-  android:layout_width="fill_parent"
+  android:layout_width="fill_parent" >
-  android:orientation="vertical" >
   <ListView
     android:id="@+id/track_list"
     android:layout_height="fill_parent"
     android:layout_width="fill_parent" />
-</LinearLayout>
+  <LinearLayout
+    android:gravity="center"
+    android:id="@+id/track_list_empty"
+    android:layout_height="fill_parent"
+    android:layout_width="fill_parent"
+    android:orientation="vertical"
+    android:padding="8dp" >
+    <TextView
+      android:gravity="center"
+      android:layout_height="wrap_content"
+      android:layout_width="wrap_content"
+      android:paddingBottom="8dp"
+      android:text="@string/track_list_empty_message"
+      style="@android:style/TextAppearance.DeviceDefault.Large" >
+    </TextView>
+    <ImageButton
+      android:contentDescription="@string/menu_record_track"
+      android:id="@+id/track_list_record_button"
+      android:layout_height="wrap_content"
+      android:layout_width="wrap_content"
+      android:padding="16dp"
+      android:src="@drawable/menu_record_track"
+      style="@android:style/Widget.DeviceDefault.ImageButton" />
+  </LinearLayout>
+</FrameLayout>

MyTracks/res/values/strings.xml

@@ -2221,6 +2221,11 @@ limitations under the License.
       the user that all tracks and markers will be permanently deleted from the phone.">
     All tracks and markers will be permanently deleted from the phone.
   </string>
+  <string name="track_list_empty_message"
+    translation_description="When the track list is empty, the message informing the user to click
+      on the record button to start a new recording">
+    You don\'t have any recorded tracks. Click on the record button to start a new recording.
+  </string>
   <string name="track_list_record_error"
     translation_description="When starting a new track recording, the error message informing the
       user not able to record and asking the user to try again.">

MyTracks/src/com/google/android/apps/mytracks/TrackListActivity.java

@@ -54,6 +54,7 @@ import android.view.View;
 import android.widget.AdapterView;
 import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.AdapterView.OnItemClickListener;
+import android.widget.ImageButton;
 import android.widget.ListView;
 import android.widget.TextView;
 import android.widget.Toast;
@@ -169,7 +170,17 @@ public class TrackListActivity extends FragmentActivity {
     metricUnits = sharedPreferences.getBoolean(getString(R.string.metric_units_key), true);
     recordingTrackId = PreferencesUtils.getRecordingTrackId(this);
 
+    ImageButton recordImageButton = (ImageButton) findViewById(R.id.track_list_record_button);
+    recordImageButton.setOnClickListener(new View.OnClickListener() {
+      @Override
+      public void onClick(View v) {
+        updateMenuItems(true);
+        startRecording();
+      }
+    });
+
     listView = (ListView) findViewById(R.id.track_list);
+    listView.setEmptyView(findViewById(R.id.track_list_empty));  
     listView.setOnItemClickListener(new OnItemClickListener() {
       @Override
       public void onItemClick(AdapterView<?> parent, View view, int position, long id) {