我正在开发基于位置的项目,我使用以下代码
我正在为该项目使用 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 ");
}
此代码在我的 Galaxy Tab 上运行良好,甚至在 HTC 上也运行良好
但是当我使用 Nexus 时,它返回位置的空值。 我是否需要更改我的 API 级别,或者 Galaxy Nexus 有任何具体要求吗 预先感谢您:)
最佳答案
请遵循代码行..
Step1: into your oncreate
LocationListener 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
}
关于android - getLastknownLocation() 在 nexus 上返回 null 值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10681369/