Java tutorial
/* * Copyright (C) 2008 The Android Open Source Project * * 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. */ package android.annotation; import java.lang.annotation.Target; import java.lang.annotation.ElementType; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; /** * Indicates a class is a widget usable by application developers to create UI. * <p> * This must be used in cases where: * <ul> * <li>The widget is not in the package <code>android.widget</code></li> * <li>The widget extends <code>android.view.ViewGroup</code></li> * </ul> * @hide */ @Target({ ElementType.TYPE }) @Retention(RetentionPolicy.SOURCE) public @interface Widget { }