<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

public class MainActivity extends FragmentActivity {...// Global constants/** Define a request code to send to Google Play services* This code is returned in Activity.onActivityResult*/private final static intCONNECTION_FAILURE_RESOLUTION_REQUEST = 9000;...// Define a DialogFragment that displays the error dialogpublic static class ErrorDialogFragment extends DialogFragment {// Global field to contain the error dialogprivate Dialog mDialog;// Default constructor. Sets the dialog field to nullpublic ErrorDialogFragment() {super();mDialog = null;}// Set the dialog to displaypublic void setDialog(Dialog dialog) {mDialog = dialog;}// Return a Dialog to the DialogFragment.
        @Overridepublic Dialog onCreateDialog(Bundle savedInstanceState) {return mDialog;}}.../** Handle results returned to the FragmentActivity* by Google Play services*/@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {// Decide what to do based on the original request codeswitch (requestCode) {...case CONNECTION_FAILURE_RESOLUTION_REQUEST :/** If the result code is Activity.RESULT_OK, try* to connect again*/switch (resultCode) {case Activity.RESULT_OK :/** Try the request again*/...break;}...}...}...private boolean servicesConnected() {// Check that Google Play services is availableint resultCode =GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);// If Google Play services is availableif (ConnectionResult.SUCCESS == resultCode) {// In debug mode, log the statusLog.d("Location Updates","Google Play services is available.");// Continuereturn true;// Google Play services was not available for some reason} else {// Get the error codeint errorCode = connectionResult.getErrorCode();// Get the error dialog from Google Play servicesDialog errorDialog = GooglePlayServicesUtil.getErrorDialog(errorCode,this,CONNECTION_FAILURE_RESOLUTION_REQUEST);// If Google Play services can provide an error dialogif (errorDialog != null) {// Create a new DialogFragment for the error dialogErrorDialogFragment errorFragment =new ErrorDialogFragment();// Set the dialog in the DialogFragment
                errorFragment.setDialog(errorDialog);// Show the error dialog in the DialogFragment
                errorFragment.show(getSupportFragmentManager(),"Location Updates");}}}...
}

public class MainActivity extends FragmentActivity implementsGooglePlayServicesClient.ConnectionCallbacks,GooglePlayServicesClient.OnConnectionFailedListener {.../** Called by Location Services when the request to connect the* client finishes successfully. At this point, you can* request the current location or start periodic updates*/@Overridepublic void onConnected(Bundle dataBundle) {// Display the connection statusToast.makeText(this, "Connected", Toast.LENGTH_SHORT).show();}.../** Called by Location Services if the connection to the* location client drops because of an error.*/@Overridepublic void onDisconnected() {// Display the connection statusToast.makeText(this, "Disconnected. Please re-connect.",Toast.LENGTH_SHORT).show();}.../** Called by Location Services if the attempt to* Location Services fails.*/@Overridepublic void onConnectionFailed(ConnectionResult connectionResult) {/** Google Play services can resolve some errors it detects.* If the error has a resolution, try sending an Intent to* start a Google Play services activity that can resolve* error.*/if (connectionResult.hasResolution()) {try {// Start an Activity that tries to resolve the error
                connectionResult.startResolutionForResult(this,CONNECTION_FAILURE_RESOLUTION_REQUEST);/** Thrown if Google Play services canceled the original* PendingIntent*/} catch (IntentSender.SendIntentException e) {// Log the error
                e.printStackTrace();}} else {/** If no resolution is available, display a dialog to the* user with the error.*/showErrorDialog(connectionResult.getErrorCode());}}...
}

public class MainActivity extends FragmentActivity implementsGooglePlayServicesClient.ConnectionCallbacks,GooglePlayServicesClient.OnConnectionFailedListener,LocationListener {...// Define the callback method that receives location updates
    @Overridepublic void onLocationChanged(Location location) {// Report to the UI that the location was updatedString msg = "Updated Location: " +Double.toString(location.getLatitude()) + "," +Double.toString(location.getLongitude());Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();}...
}

public class MainActivity extends FragmentActivity implementsGooglePlayServicesClient.ConnectionCallbacks,GooglePlayServicesClient.OnConnectionFailedListener,LocationListener {...// Global constants
    ...// Milliseconds per secondprivate static final int MILLISECONDS_PER_SECOND = 1000;// Update frequency in secondspublic static final int UPDATE_INTERVAL_IN_SECONDS = 5;// Update frequency in millisecondsprivate static final long UPDATE_INTERVAL =MILLISECONDS_PER_SECOND * UPDATE_INTERVAL_IN_SECONDS;// The fastest update frequency, in secondsprivate static final int FASTEST_INTERVAL_IN_SECONDS = 1;// A fast frequency ceiling in millisecondsprivate static final long FASTEST_INTERVAL =MILLISECONDS_PER_SECOND * FASTEST_INTERVAL_IN_SECONDS;...// Define an object that holds accuracy and frequency parameters
    LocationRequest mLocationRequest;...@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// Create the LocationRequest objectmLocationRequest = LocationRequest.create();// Use high accuracy
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);// Set the update interval to 5 seconds
        mLocationRequest.setInterval(UPDATE_INTERVAL);// Set the fastest update interval to 1 second
        mLocationRequest.setFastestInterval(FASTEST_INTERVAL);...}...
}

public class MainActivity extends FragmentActivity implementsGooglePlayServicesClient.ConnectionCallbacks,GooglePlayServicesClient.OnConnectionFailedListener,LocationListener {...// Global variables
    ...LocationClient mLocationClient;boolean mUpdatesRequested;...@Overrideprotected void onCreate(Bundle savedInstanceState) {...// Open the shared preferencesmPrefs = getSharedPreferences("SharedPreferences",Context.MODE_PRIVATE);// Get a SharedPreferences editormEditor = mPrefs.edit();/** Create a new location client, using the enclosing class to* handle callbacks.*/mLocationClient = new LocationClient(this, this, this);// Start with updates turned offmUpdatesRequested = false;...}...@Overrideprotected void onPause() {// Save the current setting for updatesmEditor.putBoolean("KEY_UPDATES_ON", mUpdatesRequested);mEditor.commit();super.onPause();}...@Overrideprotected void onStart() {...mLocationClient.connect();}...@Overrideprotected void onResume() {/** Get any previous setting for location updates* Gets "false" if an error occurs*/if (mPrefs.contains("KEY_UPDATES_ON")) {mUpdatesRequested =mPrefs.getBoolean("KEY_UPDATES_ON", false);// Otherwise, turn off location updates} else {mEditor.putBoolean("KEY_UPDATES_ON", false);mEditor.commit();}}.../** Called by Location Services when the request to connect the* client finishes successfully. At this point, you can* request the current location or start periodic updates*/@Overridepublic void onConnected(Bundle dataBundle) {// Display the connection statusToast.makeText(this, "Connected", Toast.LENGTH_SHORT).show();// If already requested, start periodic updatesif (mUpdatesRequested) {mLocationClient.requestLocationUpdates(mLocationRequest, this);}}...
}

public class MainActivity extends FragmentActivity implementsGooglePlayServicesClient.ConnectionCallbacks,GooglePlayServicesClient.OnConnectionFailedListener,LocationListener {.../** Called when the Activity is no longer visible at all.* Stop updates and disconnect.*/@Overrideprotected void onStop() {// If the client is connectedif (mLocationClient.isConnected()) {/** Remove location updates for a listener.* The current Activity is the listener, so* the argument is "this".*/removeLocationUpdates(this);}/** After disconnect() is called, the client is* considered "dead".*/mLocationClient.disconnect();super.onStop();}...
}