首先，分清楚 Service 和 IntentService。
之前做的一个笔记：
参考：
Service vs IntentService：
http://stackoverflow.com/questions/15524280/service-vs-intent-service
一篇对比了 Service、Thread、IntentService、AsyncTask 四者关系的文章：
http://techtej.blogspot.com.es/2011/03/android-thread-constructspart-4.html
安卓官方参考资料：
http://developer.android.com/training/run-background-service/create-service.html
开始
由于 IntentService 比较方便所以就直接使用 IntentService 了。
新建类，继承 IntentService。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | public class CallingService extends IntentService { public CallingService(String name) { super(name); // TODO Auto-generated constructor stub } @Override protected void onHandleIntent(Intent intent) { // TODO Auto-generated method stub //do work here System.out.println(" 成功启动 "); } } |
如果这样直接启动 Service 很容易会报 InstantiationException（就在这里卡了一会）
解决：
只要把构造函数改改就 OK 了
1 2 3 | public CallingService() { super("CallingService"); } |
启动 IntentService
1 2 | Intent intent=new Intent(this, CallingService.class); startService(intent); |
在这个 Service 实现一个内部类, 继承 IOCallback
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | class MySocketIO implements IOCallback {
// 构造函数
public MySocketIO(){
}
@Override
public void onDisconnect() {
// TODO Auto-generated method stub
}
@Override
public void onConnect() {
// TODO Auto-generated method stub
}
@Override
public void onMessage(String data, IOAcknowledge ack) {
System.out.println("Server said: " + data);
}
@Override
public void onMessage(JSONObject json, IOAcknowledge ack) {
// TODO Auto-generated method stub
}
@Override
public void on(String event, IOAcknowledge ack, Object... args) {
// TODO Auto-generated method stub
// 这里接收广播
}
@Override
public void onError(SocketIOException socketIOException) {
// TODO Auto-generated method stub
}
}
|
Notification 参考上一篇文章。
整个代码：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 | public class CallingService extends IntentService { private MySocketIO socket; long vT[]={300,100,300,100}; int id, no; public CallingService() { super("CallingService"); } public CallingService(String name) { super(name); } @Override public IBinder onBind(Intent intent) { Log.d("test", "onBind()"); return super.onBind(intent); } @Override public void onCreate() { Log.d("test", "onCreate()"); super.onCreate(); } @Override public void onDestroy() { Log.d("test", "onDestroy()"); super.onDestroy(); } @Override public void onStart(Intent intent, int startId) { Log.d("test", "onStart()"); super.onStart(intent, startId); } @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.d("test", "onStartCommand()"); return super.onStartCommand(intent, flags, startId); } @Override protected void onHandleIntent(Intent intent) { no = intent.getIntExtra("no", -1); id = intent.getIntExtra("id", -1); socket=new MySocketIO(Common.LOCALHOST, id); initNotification(no); } /** * * @param Myno 拿到的号数 * @param nowNo 现在叫的号数 */ @SuppressLint("NewApi") private void initNotification(int nowNo){ Intent resultIntent = new Intent(this, MainPager.class); TaskStackBuilder stackBuilder = TaskStackBuilder.create(this); stackBuilder.addNextIntent(resultIntent); PendingIntent resultPendingIntent = stackBuilder.getPendingIntent( 0, PendingIntent.FLAG_UPDATE_CURRENT ); NotificationCompat.Builder mBuilder = //Notification 的兼容类 new NotificationCompat.Builder(this) .setSmallIcon(R.drawable.ic_launcher) // 若没有设置 largeicon，此为左边的大 icon，设置了 largeicon，则为右下角的小 icon，无论怎样，都影响 Notifications area 显示的图标 .setContentTitle(" 您的号数："+no) // 标题 .setContentText(" 现叫号数："+nowNo) // 正文 .setOngoing(true) //true 使 notification 变为 ongoing，用户不能手动清除，类似 QQ,false 或者不设置则为普通的通知 .setContentIntent(resultPendingIntent); if(no==nowNo){ mBuilder.setVibrate(vT) ; // 震动 mBuilder.setDefaults(Notification.DEFAULT_SOUND);// 设置声音，此为默认声音 mBuilder.setAutoCancel(true);// 点击之后自动消失 } NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); mNotificationManager.notify(1000, mBuilder.build()); } class MySocketIO implements IOCallback { public SocketIO socket; /** * 企业 id */ private int flag; // 构造函数 public MySocketIO( String url,int flag) { this.flag=flag; socket = new SocketIO(); try { socket.connect(url, this); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override public void onDisconnect() { // TODO Auto-generated method stub } @Override public void onConnect() { // TODO Auto-generated method stub } @Override public void onMessage(String data, IOAcknowledge ack) { System.out.println("Server said: " + data); } @Override public void onMessage(JSONObject json, IOAcknowledge ack) { // TODO Auto-generated method stub } @Override public void on(String event, IOAcknowledge ack, Object... args) { // TODO Auto-generated method stub if(event.endsWith("nowNumber") ){ JSONObject object=null; if(args.length>0) { try { object=new JSONObject(args[0].toString()); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } int checkFlag = -1 ; try { checkFlag=object.getInt("id"); } catch (JSONException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } if(checkFlag==(flag)){ try { initNotification(object.getInt("no")); Log.v("test", object.getInt("no")+""); } catch (JSONException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } } @Override public void onError(SocketIOException socketIOException) { // TODO Auto-generated method stub } } } |
实现 SocketIO 和 Service 通信使用 Notification 通知。