Hi..All,
I need to disply current Position latitude and
logintude .. I tried but it will show Null pointer exception.. here
with i attached my code... please help me to solve this problem..
I run this application on android emulator
import android.app.Activity;
import android.app.Dialog;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.location.LocationProvider;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class Home extends Activity
{
private Button btn1;
private Button btn2;
private Button btn3;
private LocationListener myLocationListener;
private LocationManager myLocationManager;
public String latitude;
public String longitude;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.home);
myLocationManager =
(LocationManager)getSystemService(Context.LOCATION_SERVICE);
myLocationListener = new MyLocationListener();
myLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
1, 1, myLocationListener);
latitude=String.valueOf(myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER).getLatitude());
longitude =
String.valueOf(myLocationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER).getLongitude());
btn1= (Button)findViewById(R.id.btn1);
btn2= (Button)findViewById(R.id.btn2);
btn3= (Button)findViewById(R.id.btn3);
redbtn.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
Toast.makeText(getBaseContext(), "Latitude :" +
latitude.toString(), Toast.LENGTH_SHORT).show();
}
});
greenBtn.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(getBaseContext(), "Longitude:" +
longitude.toString(), Toast.LENGTH_SHORT).show();
}
});
cancelBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v)
{
// TODO Auto-generated method stub
Toast.makeText(Home.this, "NO gps",
Toast.LENGTH_SHORT).show();
}
});
}
public class MyLocationListener implements LocationListener
{
public void onLocationChanged(Location argLocation)
{
if(argLocation != null)
{
latitude =
String.valueOf(argLocation.getLatitude());
longitude =
String.valueOf(argLocation.getLongitude());
}
}
public void onProviderDisabled(String provider)
{
}
public void onProviderEnabled(String provider)
{
}
public void onStatusChanged(String provider, int status,
Bundle
arg2)
{
}
};
}
Thanks & Warm Regards,
gold
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