Android How to - Get your location

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The following code shows how to Get your location.

Example

Register permission

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.java2s.myapplication3.app" >
    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="java2s.com"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.java2s.myapplication3.app.MainActivity"
            android:label="java2s.com" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

Main Layout xml file

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
</LinearLayout>

Main activity Java code

package com.java2s.myapplication3.app;
/* w  ww  .  j av a 2  s .  co m*/
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.widget.TextView;

public class MainActivity extends Activity {

    private LocationManager mManager;
    private Location mCurrentLocation;

    private TextView mLocationView;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mLocationView = new TextView(this);
        setContentView(mLocationView);
        mManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    }
    @Override
    public void onResume() {
        super.onResume();
        if(!mManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setTitle("Location Manager");
            builder.setMessage("We would like to use your location, "
                    + "but GPS is currently disabled.\n"
                    + "Would you like to change these settings now?");
            builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    //Launch settings, allowing user to make a change
                    Intent i = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                    startActivity(i);
                }
            });
            builder.setNegativeButton("No", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    //No location service, no Activity
                    finish();
                }
            });
            builder.create().show();
        }

        mCurrentLocation = mManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        updateDisplay();

        int minTime = 5000;
        float minDistance = 0;
        mManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, minTime, minDistance, mListener);
    }

    @Override
    public void onPause() {
        super.onPause();
        mManager.removeUpdates(mListener);
    }

    private void updateDisplay() {
        if(mCurrentLocation == null) {
            mLocationView.setText("Determining Your Location...");
        } else {
            mLocationView.setText(String.format("Your Location:\n%.2f, %.2f",
                    mCurrentLocation.getLatitude(),
                    mCurrentLocation.getLongitude()));
        }
    }

    private LocationListener mListener = new LocationListener() {
        @Override
        public void onLocationChanged(Location location) {
            mCurrentLocation = location;
            updateDisplay();
        }

        @Override
        public void onProviderDisabled(String provider) { }

        @Override
        public void onProviderEnabled(String provider) { }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) { }

    };
}

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