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.messaging.sms;
17 
18 import java.lang.reflect.InvocationTargetException;
19 import java.lang.reflect.Method;
20 
21 /**
22  * Hacky way to call the hidden SystemProperties class API
23  */
24 class SystemProperties {
25     private static Method sSystemPropertiesGetMethod = null;
26 
get(final String name)27     public static String get(final String name) {
28         if (sSystemPropertiesGetMethod == null) {
29             try {
30                 final Class systemPropertiesClass = Class.forName("android.os.SystemProperties");
31                 if (systemPropertiesClass != null) {
32                     sSystemPropertiesGetMethod =
33                             systemPropertiesClass.getMethod("get", String.class);
34                 }
35             } catch (final ClassNotFoundException e) {
36                 // Nothing to do
37             } catch (final NoSuchMethodException e) {
38                 // Nothing to do
39             }
40         }
41         if (sSystemPropertiesGetMethod != null) {
42             try {
43                 return (String) sSystemPropertiesGetMethod.invoke(null, name);
44             } catch (final IllegalArgumentException e) {
45                 // Nothing to do
46             } catch (final IllegalAccessException e) {
47                 // Nothing to do
48             } catch (final InvocationTargetException e) {
49                 // Nothing to do
50             }
51         }
52         return null;
53     }
54 }
55