Android Service检查Wifi状态并用notification通知

今天一到公司被接到一个新需求说要做一个监测Wifi连接状况的功能，纳闷要这功能何为的时候，突然领悟到公司那弱弱的wifi。常常连不上不说，还会一直假连。感情是他们昨天下班后，拿这个软件测试，局域网连不上，数据库数据拿不到，导致程序直接崩溃了。

介于这个情况，我首先把请求服务的host错误给catch掉，提示“网络连接异常”，然后再来慢慢研究wifi，好歹在午睡后做出了雏形。废话不多数，贴上代码:

public class CheckWifi extends Service {
private boolean quit = false;
private WifiManager wifiM;

@Override
public IBinder onBind(Intent arg0) {
return null;
}

@Override
public void onCreate() {
super.onCreate();
Context context = getApplicationContext();
final NotificationManager notificationManager = (NotificationManager) context
.getSystemService(NOTIFICATION_SERVICE);
int icon = R.drawable.stat_notify_chat; //图标随便用了个，美工没空T T
CharSequence cs = "Wifi连接中断";
long when = System.currentTimeMillis();
final Notification notification = new Notification(icon, cs, when);
CharSequence contentTitle = "CRM系统提示";
CharSequence contentText = "Wifi连接已中断,请检查网络";
Intent notificationIntent = new Intent();
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
notificationIntent, 0);
notification.setLatestEventInfo(context, contentTitle, contentText,
contentIntent);
new Thread() {
@Override
public void run() {
Looper.prepare();
while (!quit) {
try {
Thread.sleep(1000*60*5);    //每5分钟检查一次
} catch (InterruptedException e) {
e.printStackTrace();
}
wifiM = (WifiManager) getSystemService(WIFI_SERVICE);
WifiInfo wifiInfo = wifiM.getConnectionInfo();
int ipAddress = wifiInfo == null ? 0 : wifiInfo.getIpAddress();
if (wifiM.isWifiEnabled() && ipAddress != 0) {

} else {
notificationManager.notify(1, notification);
}
}
}
}.start();
}
}

记得在AndroidManifest.xml配置Service

<service android:name=.CheckWifi">
<intent-filter>
<action android:name="com.fix.service.CHECKWIFI"/>
</intent-filter>
</service>

然后在Activity启动Service

Intent intent = new Intent();
intent.setAction("com.fix.service.CHECKWIFI");
startService(intent);