TestGPS 是gps模块进行定位。在室外能够搜索到卫星。 TestWifiLoacation：是network模式进行定位。 LocaionManager-master.zip 是集合个各种定位的功能。先进性gps定位，gps失败用network定位。

======================================= 有些设备定位总是失败。应为location = null，可以用下面的函数来得到location，但是算出来的经度维度不对

private Location getLastKnownLocation() { lm = (LocationManager)getApplicationContext().getSystemService(LOCATION_SERVICE); List providers = lm.getProviders(true); Location bestLocation = null; for (String provider : providers) { Location l = lm.getLastKnownLocation(provider); if (l == null) { continue; } if (bestLocation == null || l.getAccuracy() < bestLocation.getAccuracy()) { // Found best last known location: %s", l); bestLocation = l; } } return bestLocation; }