Pileus Git - ~andy/iBeaconNav/blob - src/edu/ucla/iBeaconNav/Task.java

   1 package edu.ucla.iBeaconNav;
   2
   3 import java.util.List;
   4 import java.util.LinkedList;
   5 import java.util.concurrent.locks.Lock;
   6 import java.util.concurrent.locks.ReentrantLock;
   7
   8 import android.app.Notification;
   9 import android.app.PendingIntent;
  10 import android.app.Service;
  11 import android.content.Context;
  12 import android.content.Intent;
  13 import android.content.SharedPreferences;
  14 import android.os.IBinder;
  15 import android.os.Looper;
  16 import android.os.Messenger;
  17 import android.preference.PreferenceManager;
  18
  19 public class Task extends Service implements Runnable
  20 {
  21         /* Commands */
  22         public static final int REGISTER   = 0;
  23         public static final int POSITION   = 1;
  24         public static final int CONNECT    = 2;
  25         public static final int DISCONNECT = 3;
  26         public static final int NOTIFY     = 4;
  27
  28         /* Private data */
  29         private Messenger  messenger;
  30         private Thread     thread;
  31         private boolean    active;
  32
  33         /* Private methods */
  34         private void tellMain(int cmd, Object value)
  35         {
  36                 try {
  37                         android.os.Message msg = android.os.Message.obtain();
  38                         msg.what = cmd;
  39                         msg.obj  = value;
  40                         this.messenger.send(msg);
  41                 } catch (Exception e) {
  42                         Util.debug("Task: error sending message", e);
  43                 }
  44         }
  45
  46         private void notify(String text, int icon)
  47         {
  48                 // Notify Main
  49                 this.tellMain(NOTIFY, text);
  50
  51                 // Notification bar
  52                 //Notification  note   = new Notification(icon, null, 0);
  53                 //Intent        intent = new Intent(this, Main.class);
  54                 //PendingIntent pend   = PendingIntent.getActivity(this, 0, intent, 0);
  55
  56                 //note.setLatestEventInfo(this, "iBeaconNav!", text, pend);
  57                 //this.startForeground(1, note);
  58         }
  59
  60         private void handle(int cmd, Messenger mgr)
  61         {
  62                 // Validate messenger
  63                 if (cmd != REGISTER && mgr != null && mgr != this.messenger) {
  64                         Util.debug("Task: handle - invalid messenger");
  65                 }
  66
  67                 // Setup communication with Main
  68                 if (cmd == REGISTER) {
  69                         Util.debug("Task: handle - register");
  70                         this.messenger = mgr;
  71                         this.tellMain(REGISTER, this);
  72                 }
  73
  74                 // Create client thread
  75                 if (cmd == CONNECT && this.thread == null) {
  76                         Util.debug("Task: handle - connect");
  77                         this.thread = new Thread(this);
  78                         this.thread.start();
  79                 }
  80
  81                 // Stop client thread
  82                 if (cmd == DISCONNECT && this.thread != null) {
  83                         Util.debug("Task: handle - register");
  84                         try {
  85                                 this.thread.join();
  86                         } catch (Exception e) {
  87                                 Util.debug("Task: error stopping service", e);
  88                         }
  89                 }
  90         }
  91
  92         /* Public methods */
  93         public boolean isRunning()
  94         {
  95                 return this.thread != null;
  96         }
  97
  98         /* Runnable methods */
  99         @Override
 100         public void run()
 101         {
 102                 Util.debug("Task: thread run");
 103
 104                 // Run nav algorithm
 105                 while (this.active) {
 106                         // Read sensor data
 107                         this.tellMain(POSITION, 0);
 108                 }
 109
 110                 Util.debug("Task: thread exit");
 111         }
 112
 113         /* Service Methods */
 114         @Override
 115         public void onCreate()
 116         {
 117                 Util.debug("Task: onCreate");
 118                 super.onCreate();
 119         }
 120
 121         @Override
 122         public void onDestroy()
 123         {
 124                 Util.debug("Task: onDestroy");
 125                 this.handle(DISCONNECT, null);
 126         }
 127
 128         @Override
 129         public int onStartCommand(Intent intent, int flags, int startId)
 130         {
 131                 Util.debug("Task: onStartCommand");
 132                 int       rval = super.onStartCommand(intent, flags, startId);
 133                 int       cmd  = intent.getExtras().getInt("Command");
 134                 Messenger mgr  = (Messenger)intent.getExtras().get("Messenger");
 135                 this.handle(cmd, mgr);
 136                 return rval;
 137         }
 138
 139         @Override
 140         public IBinder onBind(Intent intent)
 141         {
 142                 Util.debug("Task: onBind");
 143                 return null;
 144         }
 145 }