How Can make Toast.makeText in Google map ?

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i make Google map that can have cross all airports in Egypt by shortest path with Neighborliness algorithm but i want to make Toast.makeText tell me Order of airports or the all airports cross by order

code :

public class Sixth extends Activity {
GoogleMap googleMap;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.sixth);
createMapView();
TSPNearestNeighbour TSP = new TSPNearestNeighbour();
int[] shortest = new int[21];
String[] placeNames = {"Cairo International Airport","Alexandria International Airport","Borg El Arab Airport",
"Marsa Matrouh Airport","Sharm el-Sheikh International Airport","Taba International Airport","El Kharga Airport",
"Assiut Airport","Luxor International Airport","Aswan International Airport","El Arish International Airport",
"St. Catherine International Airport","Sharq Al-Owainat Airport","Abu Simbel Airport","Sohag International Airport",
"Port Said Airport","El Tor Airport","Dakhla Oasis Airport","Marsa Alam International Airport","Cairo West Air Base","Almaza Air Force Base"};
String[] placeNamesSnippet = {"Cairo International Airport1","Alexandria International Airport2","Borg El Arab Airport3", "Marsa Matrouh Airport4","Sharm el-Sheikh International Airport5","Taba International Airport6","El Kharga Airport7", "Assiut Airport8","Luxor International Airport9","Aswan International Airport10","El Arish International Airport11", "St. Catherine International Airport12","Sharq Al-Owainat Airport13","Abu Simbel Airport14","Sohag International Airport15", "Port Said Airport16","El Tor Airport17","Dakhla Oasis Airport18","Marsa Alam International Airpor19t","Cairo West Air Bas20e","Almaza Air Force Base21"};
Double[] placeLatitude = {30.111370, 31.192553, 30.917138,31.324435,27.978620,29.590988,27.188222,27.047695, 25.670264,
23.960397,31.076449,28.684537,22.580600,22.375813,26.331926,31.281150,28.208842,25.688581,25.558141,
30.116704,30.095975};
Double[] placeLongitude = {31.413910, 29.953141,29.693375, 27.222200,34.393354,34.778946 , 33.800840, 31.013473 , 32.704063,
32.821163,33.832256,34.062882, 28.720754, 31.611667,31.728437,32.242223,33.645257,28.972356,34.582821,
30.916667,31.362748};

Double[][] Matrix = new Double[21][21];

googleMap.setMyLocationEnabled(true);
googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(placeLatitude[0], placeLongitude[0]), 13));
for(int i = 0 ; i<21;i++)
{
googleMap.addMarker(new MarkerOptions()
.snippet(placeNamesSnippet[i])
.position(new LatLng(placeLatitude[i], placeLongitude[i]))
.title(placeNames[i]));
}

for(int i=0;i<21;i++)
{
for(int j=0;j<21;j++)
{
Matrix[i][j] = distance(placeLatitude[i],placeLongitude[i],placeLatitude[j],placeLongitude[j],'K');
}
}

shortest = TSP.tsp(Matrix);


for(int i=0; i < 20 ; i++)
{

googleMap.addPolyline(new PolylineOptions().geodesic(true)
.add(new LatLng(placeLatitude[shortest[i]],placeLongitude[shortest[i]]))
.add(new LatLng(placeLatitude[shortest[i+1]],placeLongitude[shortest[i+1]]))
);
}

}

private void createMapView(){
/**
* Catch the null pointer exception that
* may be thrown when initialising the map
*/
try {
if(null == googleMap){
googleMap = ((MapFragment) getFragmentManager().findFragmentById(
R.id.mapView)).getMap();
/**
* If the map is still null after attempted initialisation,
* show an error to the user
*/
if(null == googleMap) {
Toast.makeText(getApplicationContext(),
"Error creating map", Toast.LENGTH_SHORT).show();
}
}
} catch (NullPointerException exception){
Log.e("mapApp", exception.toString());
}
}
private double rad2deg(double rad) {
return (rad * 180 / Math.PI);
}
private double deg2rad(double deg) {
return (deg * Math.PI / 180.0);
}
private double distance(double lat1, double lon1, double lat2, double lon2, char unit)
{
double theta = lon1 - lon2;
double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(deg2rad(theta));
dist = Math.acos(dist);
dist = rad2deg(dist);
dist = dist * 60 * 1.1515;
if (unit == 'K') {
dist = dist * 1.609344;
} else if (unit == 'N') {
dist = dist * 0.8684;
}
return (dist);
}
public class TSPNearestNeighbour
{
private int numberOfNodes;
private Stack<integer> stack;

public TSPNearestNeighbour()
{
stack = new Stack<integer>();
}

public int[] tsp(Double adjacencyMatrix[][])
{
numberOfNodes = adjacencyMatrix[0].length ;
int[] result = new int[adjacencyMatrix[0].length];
int resultCounter = 1;
int[] visited = new int[numberOfNodes];
visited[0] = 1;
stack.push(0);
int element, dst = 0, i;
Double min = Double.MAX_VALUE;
boolean minFlag = false;
result[0] = 0;

//System.out.print(1 + "\t");

while (!stack.isEmpty())
{
element = stack.peek();
i = 0;
min = Double.MAX_VALUE;
while (i < numberOfNodes)
{
if (adjacencyMatrix[element][i] > 1 && visited[i] == 0)
{
if (min > adjacencyMatrix[element][i])
{
min = adjacencyMatrix[element][i];
dst = i;
minFlag = true;
}
}
i++;
}
if (minFlag)
{
visited[dst] = 1;
stack.push(dst);
result[resultCounter] = dst;
resultCounter++;
//System.out.print(dst + "\t");
minFlag = false;
continue;
}
stack.pop();
}
return result;
}

}