1 /*
2  * Copyright (C) 2012 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 com.example.android.lifecycle.util;
18 
19 import android.os.Handler;
20 import android.widget.TextView;
21 
22 import java.util.List;
23 
24 public class Utils {
25 
26   private static StatusTracker mStatusTracker = StatusTracker.getInstance();
27 
28   /**
29    * Helper method to print out the lifecycle state of each Activity.  Note this has
30    * been wrapped in a Handler to delay the output due to overlaps in lifecycle state
31    * changes as one Activity launches another.
32    * @link http://developer.android.com/guide/topics/fundamentals/activities.html#CoordinatingActivities
33    * @param viewMethods TextView to list out the lifecycle methods called
34    * @param viewStatus TextView to list out the status of all Activity classes
35    */
printStatus(final TextView viewMethods, final TextView viewStatus)36   public static void printStatus(final TextView viewMethods, final TextView viewStatus) {
37       Handler handler = new Handler();
38       handler.postDelayed(new Runnable() {
39         public void run() {
40           // Get the stack of Activity lifecycle methods called and print to TextView
41           StringBuilder sbMethods = new StringBuilder();
42           List<String> listMethods = mStatusTracker.getMethodList();
43           for (String method : listMethods) {
44               sbMethods.insert(0, method + "\r\n");
45           }
46           if(viewMethods != null) {
47               viewMethods.setText(sbMethods.toString());
48           }
49 
50           // Get the status of all Activity classes and print to TextView
51           StringBuilder sbStatus = new StringBuilder();
52           for (String key : mStatusTracker.keySet()) {
53             sbStatus.insert(0,key + ": " + mStatusTracker.getStatus(key) + "\n");
54           }
55           if(viewStatus != null) {
56               viewStatus.setText(sbStatus.toString());
57           }
58         }
59       }, 750);
60     }
61 }
62 
63 
64 
65 
66