Question

I have an array list of hash map and in this array list of hashmap i am adding items when activity created by downloading data from a webservice. and i am passing it to adapter of listview and want to save it and restore among multiple visits to the activity so that it doesnt download data each time when activity is resumed. I have an idea of onsavedInstanceState and onRestoreInstanceState , but i do not know how can we save and store arraylist of hashmaps.

Any one can help. Many thanks in advance……

Answer 1

Make one Constant.java file and Declare hashmap arraylist in this file, Please see below code for more information, it will solve your problem.

public class Constants {
    public static ArrayList<HashMap<String, String>> mResults = new 
                        ArrayList<HashMap<String, String>>();
}