我有固定位置的问题。我使用getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
但总是返回 null,我已在您的AndroidManifest.xml
.
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
并在“设置”->“位置和安全”->“通过网络的位置”中启用。
TextView locationShow = (TextView) this.findViewById(R.id.location);
double latitude = 0.0, longitude = 0.0;
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
else {
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
if (location != null) {
Log.i("SuperMap", "Location changed : Lat: " + location.getLatitude() + " Lng: " +
location.getLongitude());
}
}
public void onProviderDisabled(String provider) {
}
public void onProviderEnabled(String provider) {
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0,
locationListener);
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
locationShow.setText("经度:" + latitude + "纬度:" + longitude);
我发现其他应用程序可以正确显示位置,所以我的代码可能有问题。