Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
// Licensed under the MIT license.

import android.content.Context;
import android.content.SharedPreferences;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

public class Main {
    public static void deletePersons(List<String> personIdsToDelete, String personGroupId, Context context) {
        SharedPreferences personIdNameMap = context.getSharedPreferences(personGroupId + "PersonIdNameMap",
                Context.MODE_PRIVATE);
        SharedPreferences.Editor personIdNameMapEditor = personIdNameMap.edit();
        for (String personId : personIdsToDelete) {
            personIdNameMapEditor.remove(personId);
        }
        personIdNameMapEditor.commit();

        Set<String> personIds = getAllPersonIds(personGroupId, context);
        Set<String> newPersonIds = new HashSet<>();
        for (String personId : personIds) {
            if (!personIdsToDelete.contains(personId)) {
                newPersonIds.add(personId);
            }
        }
        SharedPreferences personIdSet = context.getSharedPreferences(personGroupId + "PersonIdSet",
                Context.MODE_PRIVATE);
        SharedPreferences.Editor personIdSetEditor = personIdSet.edit();
        personIdSetEditor.putStringSet("PersonIdSet", newPersonIds);
        personIdSetEditor.commit();
    }

    public static Set<String> getAllPersonIds(String personGroupId, Context context) {
        SharedPreferences personIdSet = context.getSharedPreferences(personGroupId + "PersonIdSet",
                Context.MODE_PRIVATE);
        return personIdSet.getStringSet("PersonIdSet", new HashSet<String>());
    }
}