Add network traffic display in profile selector

src/main/scala/com/github/shadowsocks/ProfileManagerActivity.scala

@@ -10,11 +10,13 @@ import android.support.v7.widget.Toolbar.OnMenuItemClickListener
 import android.support.v7.widget.helper.ItemTouchHelper
 import android.support.v7.widget.helper.ItemTouchHelper.SimpleCallback
 import android.support.v7.widget.{DefaultItemAnimator, LinearLayoutManager, RecyclerView, Toolbar}
+import android.text.style.TextAppearanceSpan
+import android.text.{Spanned, SpannableStringBuilder}
 import android.view.View.{OnAttachStateChangeListener, OnClickListener}
 import android.view.{LayoutInflater, MenuItem, View, ViewGroup}
 import android.widget.{LinearLayout, ImageView, CheckedTextView, Toast}
 import com.github.shadowsocks.database.Profile
-import com.github.shadowsocks.utils.{Parser, Utils}
+import com.github.shadowsocks.utils.{TrafficMonitor, Parser, Utils}
 import com.google.zxing.integration.android.IntentIntegrator
 import net.glxn.qrgen.android.QRCode
 
@@ -54,10 +56,21 @@ class ProfileManagerActivity extends AppCompatActivity with OnMenuItemClickListe
       })
     }
 
+    def updateText() {
+      val builder = new SpannableStringBuilder
+      builder.append(item.name)
+      val start = builder.length
+      builder.append(getString(R.string.stat_profiles,
+        TrafficMonitor.formatTraffic(item.tx), TrafficMonitor.formatTraffic(item.rx)))
+      builder.setSpan(new TextAppearanceSpan(ProfileManagerActivity.this, android.R.style.TextAppearance_Small),
+        start + 1, builder.length, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE)
+      text.setText(builder)
+    }
+
     def bind(item: Profile) {
-      text.setText(item.name)
-      text.setChecked(item.id == ShadowsocksApplication.profileId)
       this.item = item
+      updateText()
+      text.setChecked(item.id == ShadowsocksApplication.profileId)
     }
 
     def onClick(v: View) = {