How to Store Hashmap to android so that it will be reuse when application restart using shared preferences?

Question

I want to store hashmap to my android application that when restart ,it shows last saved values of hashmap.

HashMap HtKpi=new HashMap&l         


        

Answer 1

I have a solution. Same thing i had done in my application where i wanted to store the name of states as key and state abbreviation as value. For that declared an string array in "res/values/string.xml". Here is the code used to declare an array :

 
    yourKey1;yourValue1
    yourKey2;yourValue2
    yourKey3;yourValue3

And after this, where you want to instantiate your hashmap, do this :

HashMap map = new HashMap();
    Resources res = getResources();

    String[] stringArray = res.getStringArray(R.array.array_string);

    //R.array.array_string is the name of your array declared in string.xml
    if(stringArray == null || stringArray.length == 0) return;

    for(String string : stringArray) {
        String[] splittedString = string.split(";");
        if(splittedString.length > 0) {
            String key = splittedString[0];
            String value = splittedString[1];
            map.put(key, value);
        }
    }

Now you have your HaspMap instance ready for use. This is simple way of doing this which i prefer.