Android implements express tracking progress bar

import ; 
import ; 
import ; 
import ; 
 
import ; 
import ; 
import ; 
 
public class MainActivity extends Activity { 
 
 private ListView listView; 
 List<String> data; 
 private TimelineAdapter timelineAdapter; 
 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
 (savedInstanceState); 
 setContentView(.activity_main); 
 
 listView = (ListView) (); 
 (0); 
 timelineAdapter = new TimelineAdapter(this, getData()); 
 (timelineAdapter); 
 
 } 
 
 private List<Map<String, Object>> getData() { 
 List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(); 
 
 Map<String, Object> map = new HashMap<String, Object>(); 
 ("time", "2015-05-20 10:15"); 
 ("title", "Shenzhen Longhua Received"); 
 (map); 
 
 map = new HashMap<String, Object>(); 
 ("time", "2015-05-21 9:25"); 
 ("title", "Leave Shenzhen and send to Shanghai"); 
 (map); 
 
 map = new HashMap<String, Object>(); 
 ("time", "2015-05-22 12:55"); 
 ("title", "Shanghai Pujiang Distribution Center"); 
 (map); 
 
 map = new HashMap<String, Object>(); 
 ("time", "2015-05-25 9:30"); 
 ("title", "Express shipment has been collected"); 
 (map); 
 return list; 
 } 
 
} 

import ; 
import ; 
 
import ; 
import ; 
import ; 
import ; 
import ; 
import ; 
 
public class TimelineAdapter extends BaseAdapter { 
 
 private List<Map<String, Object>> list; 
 private LayoutInflater inflater; 
 
 public TimelineAdapter(Context context, List<Map<String, Object>> list) { 
 super(); 
  = (context); 
  = list; 
 } 
 
 @Override 
 public int getCount() { 
 return (); 
 } 
 
 @Override 
 public Object getItem(int position) { 
 return position; 
 } 
 
 @Override 
 public long getItemId(int position) { 
 return position; 
 } 
 
 @Override 
 public View getView(int position, View convertView, ViewGroup parent) { 
 ViewHolder viewHolder = null; 
 if (convertView == null) { 
  convertView = (.listview_item, null); 
  viewHolder = new ViewHolder(); 
   = (TextView) (.tv_time); 
   = (TextView) (); 
  (viewHolder); 
 } else { 
  viewHolder = (ViewHolder) (); 
 } 
 ((position).get("time").toString()); 
 ((position).get("title").toString()); 
 
 return convertView; 
 } 
 
 static class ViewHolder { 
 public TextView time; 
 public TextView title; 
 } 
} 

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:andro 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:orientation="vertical" > 
 
 <ListView 
 android: 
 android:layout_width="fill_parent" 
 android:layout_height="wrap_content"/> 
 
</LinearLayout> 

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:andro 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:background="#ffffff" 
 android:orientation="vertical" 
 android:paddingRight="20dp" > 
<!--android:src="@drawable/timeline_green" Dot pictures --> 
 <ImageView 
 android: 
 android:layout_width="15dp" 
 android:layout_height="15dp" 
 android:layout_marginLeft="65dp" 
 android:layout_marginTop="5dp" 
 android:layout_marginBottom="5dp" 
 android:scaleType="fitCenter" 
 android:src="@drawable/timeline_green" /> 
 
 <View 
 android: 
 android:layout_width="1dp" 
 android:layout_height="60dp" 
 android:layout_below="@+id/image" 
 android:layout_marginLeft="72dp" 
 android:background="#A6A6A6" /> 
<!--android:background="@drawable/timeline_content" Picture on the right --> 
 <RelativeLayout 
 android: 
 android:layout_width="wrap_content" 
 android:layout_height="wrap_content" 
 android:layout_marginTop="2dp" 
 android:layout_toRightOf="@+id/image" 
 android:background="@drawable/timeline_content" 
 android:padding="5dp" > 
 
 <TextView 
  android: 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:singleLine="true" 
  android:layout_marginLeft="5dp" 
  android:textSize="13sp" /> 
 
 <TextView 
  android: 
  android:layout_width="wrap_content" 
  android:layout_height="wrap_content" 
  android:layout_below="@id/title" 
  android:layout_marginLeft="5dp" 
  android:textColor="#0000ff" 
  android:textSize="9sp" /> 
 
 </RelativeLayout> 
 
</RelativeLayout>