Java tutorial
//package com.java2s; /* * Copyright (C) 2012 University of Washington * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */ import android.content.Context; import android.content.SharedPreferences; public class Main { /** * This is the name of the shared preference to which collect util will save * the things it must retain. At the moment this is only the row id that is * being edited. The vast majority of state should not be saved here. */ private static final String SHARED_PREFERENCE_NAME = "CollectUtil_Preference"; /** * This is the table id of the tableId that will be receiving an add row. This * is necessary because javascript views can launch adds for tables other than * themselves, and this preference will store which table id the row should be * added to. */ private static final String PREFERENCE_KEY_TABLE_ID_ADD = "tableIdAdd"; /** * Retrieves the tableId that was stored during the call to * {@link CollectUtil#launchCollectToAddRow(Activity, Intent, String)} . * Removes the tableId so that future calls to the same method will return * null. * * @param context * @return the stored tableId, or null if no tableId was found. */ public static String retrieveAndRemoveTableIdForAddRow(Context context) { SharedPreferences sharedPreferences = context.getSharedPreferences(SHARED_PREFERENCE_NAME, Context.MODE_PRIVATE); String tableId = sharedPreferences.getString(PREFERENCE_KEY_TABLE_ID_ADD, null); sharedPreferences.edit().remove(PREFERENCE_KEY_TABLE_ID_ADD).commit(); return tableId; } }