1 /*
2  * Copyright (C) 2015 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.compatibility.common.deviceinfo;
17 
18 import android.os.UserManager;
19 
20 import com.android.compatibility.common.util.DeviceInfoStore;
21 
22 import java.lang.reflect.Field;
23 import java.lang.reflect.InvocationTargetException;
24 import java.lang.reflect.Method;
25 
26 /**
27  * User device info collector.
28  */
29 public final class UserDeviceInfo extends DeviceInfo {
30 
31     @Override
collectDeviceInfo(DeviceInfoStore store)32     protected void collectDeviceInfo(DeviceInfoStore store) throws Exception {
33         store.addResult("max_supported_users", getMaxSupportedUsers());
34     }
35 
getMaxSupportedUsers()36     private int getMaxSupportedUsers() {
37         try {
38             Method method = UserManager.class.getMethod("getMaxSupportedUsers");
39             return (Integer) method.invoke(null);
40         } catch (ClassCastException |
41                 NoSuchMethodException |
42                 InvocationTargetException |
43                 IllegalAccessException e) {}
44         return -1;
45     }
46 }
47