getLastknownLocation()在 nexus 返回null值
原问题来自于CSDN问答频道，更多解决方案见：http://ask.csdn.net/questions/1730
问题描述：
我使用下面的代码来开发一个基于位置定位的项目，这个项目我是用的是google api 8。
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this); currloc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); TextView t = (TextView)findViewById(R.id.textView1); try{ t.setText("Your current location is - "+currloc.getLatitude()+","+currloc.getLongitude()); }catch (Exception e) { // TODO: handle exception t.setText("cant find current location "); }
这段代码在galaxy tab上能正常运行，htc上也可以。
但是当我使用nexus的时候，location得到的是null。对于galaxy nexus来说，我是不是得改变api版本，或者说还有其他一些特殊需求吗？
解决方案：
仿照下面的代码：
Step1: into your oncreateLocationListener locationListener = new LocalLocationListener(); locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);Step2: into class body/**Listener on location change*/private class LocalLocationListener implements LocationListener{ public void onLocationChanged(Location location) { String text = "My current Location is: "+location.getLatitude()+", "+location.getLongitude(); GeoPoint geoPoint = new GeoPoint((int)(location.getLatitude()* 1E6), (int)(location.getLatitude() * 1E6)); mapController_.animateTo(geoPoint); Toast.makeText(LocalMap.this, text, Toast.LENGTH_SHORT).show(); Log.i("onLocationChanged", text); } public void onProviderDisabled(String provider) { // TODO Auto-generated method stub Toast.makeText(LocalMap.this, "GPS Disable", Toast.LENGTH_SHORT).show(); Log.i("onProviderDisabled", "GPS Disable"); } public void onProviderEnabled(String provider) { // TODO Auto-generated method stub Toast.makeText(LocalMap.this, "GPS Enable", Toast.LENGTH_SHORT).show(); Log.i("onProviderEnabled", "GPS Enable"); } public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub }