Android位置管理器getbestlocation返回null

Question

我需要一些关于Android中的关于LocationManager的信息/帮助。我使用此代码根据他的位置获取用户的特定信息，但在某些情况下，我得到provider=null（我不确定何时，因为该例外已上传到我们的服务器，我无法再现它）。

下面是示例代码：

LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); 
Criteria crta = new Criteria(); 
crta.setAccuracy(Criteria.ACCURACY_FINE); 
crta.setAltitudeRequired(false); 
crta.setBearingRequired(false); 
crta.setCostAllowed(true); 
crta.setPowerRequirement(Criteria.POWER_LOW); 
String provider = locationManager.getBestProvider(crta, true); 
Log.d("","provider : "+provider); 
// String provider = LocationManager.GPS_PROVIDER; 
Location location = locationManager.getLastKnownLocation(provider); 
updateWithNewLocation(location); 
locationManager.requestLocationUpdates(provider, 1000, 0, locationListener); 

我怎么能当我的供应商为空，如果有一种方式来获得当前位置，并使用它？

在此先感谢！

Answer 1

试试这个代码并且不要忘记，你的供应商ATLEAST一个应该被启用

LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
Criteria crta = new Criteria(); 
crta.setAccuracy(Criteria.ACCURACY_FINE); 
crta.setAltitudeRequired(true); 
crta.setBearingRequired(true); 
crta.setCostAllowed(true); 
crta.setPowerRequirement(Criteria.POWER_LOW); 
String provider = locationManager.getBestProvider(crta, true); 
Log.d("","provider : "+provider); 
// String provider = LocationManager.GPS_PROVIDER; 
locationManager.requestLocationUpdates(provider, 1000, 0, locationListener); 
Location location = locationManager.getLastKnownLocation(provider); 
//updateWithNewLocation(location);