java - Saving hash map into SharedPreferences -

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• saving hash map shared preferences 6 answers

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