java - Saving hash map into SharedPreferences -


this question has answer here:

how can save , hashmap in android using below format in sharedpreference

hashmap<string, list<string>> mchildmap = new hashmap<>();

the easiest way use google's gson save hashmap json. create wrapper class hashmap the getter , setter methods. refer below answer.

https://stackoverflow.com/a/11931812/5425930


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