Here you can find the source of adapterContains(ArrayAdapter
public static boolean adapterContains(ArrayAdapter<String> adapter, String month)
//package com.java2s; /*/*from w w w.jav a 2s . c o m*/ * This file is part of Lollipop Budget. * Lollipop Budget is free software: you can redistribute it and/or modify * it under the terms of version 3 of the GNU General Public License as published by * the Free Software Foundation * Lollipop Budget is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with Lollipop Budget. If not, see <http://www.gnu.org/licenses/>. */ import android.widget.ArrayAdapter; public class Main { public static boolean adapterContains(ArrayAdapter<String> adapter, String month) { int count = adapter.getCount(); for (int i = 0; i < count; i++) if (month.contentEquals(adapter.getItem(i))) return true; return false; } }