1 /* 2 * Copyright (C) 2013 DroidDriver committers 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package io.appium.droiddriver.finders; 18 19 /** 20 * Determines a true or false value for a given input. 21 * 22 * This is replicated from the open-source <a 23 * href="http://guava-libraries.googlecode.com">Guava libraries</a>. 24 * <p> 25 * Many apps use Guava. If a test apk also contains a copy of Guava, duplicated 26 * classes in app and test apks may cause error at run-time: 27 * "Class ref in pre-verified class resolved to unexpected implementation". To 28 * simplify the build and deployment set-up, DroidDriver copies the code of some 29 * Guava classes (often simplified) to this package such that it does not depend 30 * on Guava. 31 * </p> 32 */ 33 public interface Predicate<T> { 34 /** 35 * Returns the result of applying this predicate to {@code input}. 36 */ 37 boolean apply(T input); 38 39 /** 40 * {@inheritDoc} 41 * 42 * <p> 43 * It is recommended that this method return the description of this 44 * Predicate. 45 * </p> 46 */ 47 @Override 48 String toString(); 49 } 50
