1/* 2 * Copyright (C) 2011 The Android Open Source Project 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 17package android.view; 18 19import android.content.pm.ActivityInfo; 20import android.os.SystemClock; 21import android.test.ActivityInstrumentationTestCase2; 22 23public class ViewAttachTest extends 24 ActivityInstrumentationTestCase2<ViewAttachTestActivity> { 25 26 public ViewAttachTest() { 27 super(ViewAttachTestActivity.class); 28 } 29 30 /** 31 * Make sure that onAttachedToWindow and onDetachedToWindow is called in the 32 * correct order. The ViewAttachTestActivity contains a view that will throw 33 * a RuntimeException if onDetachedToWindow and onAttachedToWindow are 34 * called in the wrong order. 35 * 36 * 1. Initiate the activity 2. Perform a series of orientation changes to 37 * the activity (this will force the View hierarchy to be rebuilt, 38 * generating onAttachedToWindow and onDetachedToWindow) 39 * 40 * Expected result: No RuntimeException is thrown from the TestView in 41 * ViewFlipperTestActivity. 42 * 43 * @throws Throwable 44 */ 45 public void testAttached() throws Throwable { 46 final ViewAttachTestActivity activity = getActivity(); 47 for (int i = 0; i < 20; i++) { 48 activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); 49 SystemClock.sleep(250); 50 activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); 51 SystemClock.sleep(250); 52 } 53 } 54} 55