1 /*
2  * Copyright (C) 2018 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 
17 package android.app.role.cts;
18 
19 import android.app.Activity;
20 import android.content.Intent;
21 import android.os.Bundle;
22 import android.util.Pair;
23 
24 import androidx.annotation.NonNull;
25 import androidx.annotation.Nullable;
26 
27 import java.util.concurrent.CountDownLatch;
28 import java.util.concurrent.TimeUnit;
29 
30 /**
31  * An Activity that can start another Activity and wait for its result.
32  */
33 public class WaitForResultActivity extends Activity {
34 
35     private static final int REQUEST_CODE_WAIT_FOR_RESULT = 1;
36 
37     private CountDownLatch mLatch;
38     private int mResultCode;
39     private Intent mData;
40 
41     @Override
onCreate(@ullable Bundle savedInstanceState)42     protected void onCreate(@Nullable Bundle savedInstanceState) {
43         super.onCreate(savedInstanceState);
44 
45         if (savedInstanceState != null) {
46             throw new RuntimeException(
47                     "Activity was recreated (perhaps due to a configuration change?) "
48                           + "and this activity doesn't currently know how to gracefully handle "
49                           + "configuration changes.");
50         }
51     }
52 
startActivityToWaitForResult(@onNull Intent intent)53     public void startActivityToWaitForResult(@NonNull Intent intent) {
54         mLatch = new CountDownLatch(1);
55         startActivityForResult(intent, REQUEST_CODE_WAIT_FOR_RESULT);
56     }
57 
58     @NonNull
waitForActivityResult(long timeoutMillis)59     public Pair<Integer, Intent> waitForActivityResult(long timeoutMillis)
60             throws InterruptedException {
61         mLatch.await(timeoutMillis, TimeUnit.MILLISECONDS);
62         return new Pair<>(mResultCode, mData);
63     }
64 
65     @Override
onActivityResult(int requestCode, int resultCode, @Nullable Intent data)66     protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
67         if (requestCode == REQUEST_CODE_WAIT_FOR_RESULT) {
68             mResultCode = resultCode;
69             mData = data;
70             mLatch.countDown();
71         } else {
72             super.onActivityResult(requestCode, resultCode, data);
73         }
74     }
75 }
76