[Abstract of my android app] My app monitors the server at fixed intervals (30 seconds).
[Results(Issue)]
- 18[h] 00[m] 00[s] server check ok.
- 18[h] 00[m] 30[s] server check ok.
18[h] 03[m] 14[s] server check ok. <= This is issue. My app should check the server at 18:01:00.
My app cannot connect the server at fixed intervals at Sony xperia.
[Expected results]
- 18[h] 00[m] 00[s] server check ok.
- 18[h] 00[m] 30[s] server check ok.
- 18[h] 01[m] 00[s] server check ok.
[About my program] My app recieves the Broadcast from AlarmManager at fixed intervals. BroadcastReceiver starts service. At service, my app connects to the server. The details of my app is below.
[Step1] : setRepeating by AlarmManager
private void setRepeating () {
AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
am.setRepeating(AlarmManager.RTC_WAKEUP,System.currentTimeMillis(),pollingIntervalmsec, pendingIntent);
}
[Step2] : Recieve Broadcast from AlarmManager and start Service
public class PollingAlarmBroadcastReceiver extends BroadcastReceiver {
private static final String WAKELOCK_TAG = "xxx.xxx.xxx.xxx.PollingAlarmBroadcastReceiver";
private static PowerManager.WakeLock wl;
@Override
public void onReceive(Context context, Intent arg1) {
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKELOCK_TAG);
wl.acquire();
Intent intent = new Intent(context, MonitoringService.class);
context.startService(intent);
}
private void doOperation(Context context) {
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKELOCK_TAG);
wl.acquire();
Intent intent = new Intent(context, MonitoringService.class);
context.startService(intent);
}
}
AndroidManifest.xml
<receiver
android:name="xxx.xxx.xxx.xxx.PollingAlarmBroadcastReceiver"
android:exported="false">
<intent-filter>
<action android:name="cxxx.xxx.xxx.xxx.PollingAlarm" />
</intent-filter>
</receiver>
[Step3] : At service, connect to the server.
HttpGet request = new HttpGet(url);
request.setHeaders(headers);
HttpParams params = new BasicHttpParams();
DefaultHttpClient httpClient = new DefaultHttpClient(params);
HttpResponse response = httpClient.execute(request);
[Step4] : release wakeup lock after connecting the server.
wl.release();
[Issue log] My app successfully receives the braodcast from AlarmManager and my service successfully starts too. But my program suspends at "httpClient.execute" for about 2 minutes with the logs below.
I/QCNEA(10674): |NIMS| getaddrinfo: hostname google.co.jp servname NULL numeric 4 appname I/QCNEJ(686): |CORE| CNE_NOTIFY_NSRM_BLOCKED_UID received
[Normal log]
I/QCNEA(10674): |NIMS| getaddrinfo: hostname google.co.jp servname NULL numeric 4 appname I/QCNEA(10674): |NIMS| getaddrinfo: hostname google.co.jp servname NULL numeric 0 appname I/QCNEA(278): |NIMS| getaddrinfo: hostname google.co.jp servname NULL numeric 0 appname I/QCNEA(10674): |NIMS| getaddrinfo: hostname 173.194.126.151 servname NULL numeric 4 appname I/QCNEA(10674): |NIMS| connect: for 43 saddr 00000000000000000000000000000000:52017 (28) daddr 10 0000000000000000ffff00007681007d:80
[Environment] Sony xperia SOL22, this is japanese model of Sony Xperia Z. Android 4.2.2. Network environment is mobile internet(LTE) only. Wifi switch is off.
[Issue analysis] My app works fine when my xperia device does not sleep. My app also works fine when I use Wifi only. I tried this app at Nexus7 too. It works fine. My xperia network device or software may continues to sleep even though my app acquires WakeLock from PowerManager.
[Question] How to fix this issue? Any ideas are very welcome.
