Android Google Maps to remove the last added polygon line -

added google maps android application. draw polygonlines using method given google.i need remove last drawn polygon line. tried following codes. polyline polyline;

arraylist<polyline> polylines = new arraylist<polyline>(); 

this code click event delete last drawn polygon line.

for (polyline line : polylines) {     if (polylines.get(polylines.size() - 1).equals(line)) {           line.remove();           polylines.remove(line);           }        } 

if put following code i.e

polyline.remove() 

this remove entire polygon lines.i need remove last added polygon line.please give me solution..

simply 1 line of code:

polylines.remove(polylines.size() - 1)