1 /* 2 * Copyright 2017, 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 package com.android.managedprovisioning.testcommon; 17 18 import android.app.Activity; 19 import android.support.annotation.WorkerThread; 20 import android.support.test.runner.lifecycle.ActivityLifecycleCallback; 21 import android.support.test.runner.lifecycle.ActivityLifecycleMonitor; 22 import android.support.test.runner.lifecycle.ActivityLifecycleMonitorRegistry; 23 import android.support.test.runner.lifecycle.Stage; 24 import java.util.concurrent.CountDownLatch; 25 import java.util.concurrent.TimeUnit; 26 27 public class ActivityLifecycleWaiter implements ActivityLifecycleCallback { 28 private final CountDownLatch mLatch = new CountDownLatch(1); 29 private final Activity mActivity; 30 private final Stage mStage; 31 32 public ActivityLifecycleWaiter(Activity activity, Stage stage) { 33 mActivity = activity; 34 mStage = stage; 35 ActivityLifecycleMonitorRegistry.getInstance().addLifecycleCallback(this); 36 } 37 38 @Override 39 public void onActivityLifecycleChanged(Activity activity, Stage stage) { 40 if (activity == mActivity && stage == mStage) { 41 mLatch.countDown(); 42 } 43 } 44 45 @WorkerThread 46 public void waitForStage() throws InterruptedException { 47 waitForStage(5000L); 48 } 49 50 @WorkerThread 51 public void waitForStage(long millis) throws InterruptedException { 52 try { 53 mLatch.await(millis, TimeUnit.MILLISECONDS); 54 } finally { 55 ActivityLifecycleMonitorRegistry.getInstance().removeLifecycleCallback(this); 56 } 57 } 58 } 59
