参考http://blog.csdn.net/boystray/article/details/77840696
因为业务需要，当手机休眠待机时也需要获取定位信息。之前通过降低定位时间间隔的方式和增大距离，效果并不是太明显。在查找资料时，发现上诉优化要点，因此尝试其中一个方法。闹钟唤醒服务进行定位，并及时注销定位监听。
注册重复闹钟
Intent serviceIntent = new Intent(this, TrackerService.class);
PendingIntent mPendingIntent = PendingIntent.getService(this, 0, serviceIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.cancel(mPendingIntent);
alarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP,
System.currentTimeMillis(), 60 * 1000, mPendingIntent);
定位实现代码
public class TrackerService extends Service {
private WpaApp mApp;
private LocationManager mLocationManager;
@Override
public void onCreate() {
super.onCreate();
Log.i("定位","开始定位...");
mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 1000f,heartbeat);
new Thread(){
@Override
public void run() {
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
stopSelf();
}
}.start();
}
public TrackerService() {
}
@Override
public IBinder onBind(Intent intent) {
// TODO: Return the communication channel to the service.
throw new UnsupportedOperationException("Not yet implemented");
}
private LocationListener heartbeat = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
mApp.setLocation(location);
stopSelf();
return;
}
@Override
public void onStatusChanged(String s, int i, Bundle bundle) {
}
@Override
public void onProviderEnabled(String s) {
}
@Override
public void onProviderDisabled(String s) {
}
};
@Override
public void onDestroy() {
super.onDestroy();
mLocationManager.removeUpdates(heartbeat);
mLocationManager = null;
Log.i("定位","结束定位...");
}
}