diff --git a/src/main/scala/com/github/shadowsocks/AppManager.scala b/src/main/scala/com/github/shadowsocks/AppManager.scala
index 3b716233..74b34b22 100644
--- a/src/main/scala/com/github/shadowsocks/AppManager.scala
+++ b/src/main/scala/com/github/shadowsocks/AppManager.scala
@@ -67,6 +67,7 @@ import com.nostra13.universalimageloader.core.download.BaseImageDownloader
 import java.io.{ByteArrayOutputStream, ByteArrayInputStream, InputStream}
 import com.nostra13.universalimageloader.core.{DisplayImageOptions, ImageLoader, ImageLoaderConfiguration}
 import com.nostra13.universalimageloader.core.display.FadeInBitmapDisplayer
+import com.google.analytics.tracking.android.EasyTracker
 
 case class ProxiedApp(uid: Int, name: String, var proxied: Boolean)
 
@@ -246,8 +247,14 @@ class AppManager extends SherlockActivity with OnCheckedChangeListener with OnCl
     }.start()
   }
 
+  protected override def onStart() {
+    super.onStart()
+    EasyTracker.getInstance.activityStart(this)
+  }
+
   protected override def onStop() {
     super.onStop()
+    EasyTracker.getInstance.activityStop(this)
   }
 
   def saveAppSettings(context: Context) {
diff --git a/src/main/scala/com/github/shadowsocks/ShadowVpnService.scala b/src/main/scala/com/github/shadowsocks/ShadowVpnService.scala
index a245bb1d..4bebbebc 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowVpnService.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowVpnService.scala
@@ -396,6 +396,7 @@ class ShadowVpnService extends VpnService {
 
   override def onCreate() {
     super.onCreate()
+    EasyTracker.getTracker.setStartSession(true)
     EasyTracker.getTracker.sendEvent(TAG, "start", getVersionName, 0L)
     settings = PreferenceManager.getDefaultSharedPreferences(this)
     notificationManager = getSystemService(Context.NOTIFICATION_SERVICE)
@@ -439,8 +440,10 @@ class ShadowVpnService extends VpnService {
 
   /** Called when the activity is closed. */
   override def onDestroy() {
-    destroy()
     super.onDestroy()
+    EasyTracker.getTracker.setStartSession(false)
+    EasyTracker.getTracker.sendEvent(TAG, "stop", getVersionName, 0L)
+    destroy()
   }
 
   def killProcesses() {
diff --git a/src/main/scala/com/github/shadowsocks/ShadowsocksService.scala b/src/main/scala/com/github/shadowsocks/ShadowsocksService.scala
index 6ffc2dcb..5d0a53f7 100644
--- a/src/main/scala/com/github/shadowsocks/ShadowsocksService.scala
+++ b/src/main/scala/com/github/shadowsocks/ShadowsocksService.scala
@@ -370,6 +370,7 @@ class ShadowsocksService extends Service {
 
   override def onCreate() {
     super.onCreate()
+    EasyTracker.getTracker.setStartSession(true)
     EasyTracker.getTracker.sendEvent(TAG, "start", getVersionName, 0L)
     settings = PreferenceManager.getDefaultSharedPreferences(this)
     notificationManager = this
@@ -409,6 +410,8 @@ class ShadowsocksService extends Service {
 
   /** Called when the activity is closed. */
   override def onDestroy() {
+    super.onDestroy()
+    EasyTracker.getTracker.setStartSession(false)
     EasyTracker.getTracker.sendEvent(TAG, "stop", getVersionName, 0L)
     stopForegroundCompat(1)
     new Thread {
@@ -416,19 +419,15 @@ class ShadowsocksService extends Service {
         killProcesses()
       }
     }.start()
-
     val ed: SharedPreferences.Editor = settings.edit
     ed.putBoolean("isRunning", false)
     ed.putBoolean("isConnecting", false)
     ed.commit
     markServiceStopped()
-
     if (receiver != null) {
       unregisterReceiver(receiver)
       receiver = null
     }
-
-    super.onDestroy()
   }
 
   def killProcesses() {