| // Copyright 2017 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package dev.cobalt.util; |
| |
| import static dev.cobalt.util.Log.TAG; |
| |
| import java.lang.reflect.Method; |
| |
| /** Utility class for accessing system properties via reflection. */ |
| public class SystemPropertiesHelper { |
| private static Method getStringMethod; |
| static { |
| try { |
| getStringMethod = ClassLoader.getSystemClassLoader() |
| .loadClass("android.os.SystemProperties") |
| .getMethod("get", String.class); |
| if (getStringMethod == null) { |
| Log.e(TAG, "Couldn't load system properties getString"); |
| } |
| } catch (Exception exception) { |
| Log.e(TAG, "Exception looking up system properties methods: ", exception); |
| } |
| } |
| |
| private SystemPropertiesHelper() {} |
| |
| public static String getString(String property) { |
| if (getStringMethod != null) { |
| try { |
| return (String) getStringMethod.invoke(null, new Object[] { property }); |
| } catch (Exception exception) { |
| Log.e(TAG, "Exception getting system property: ", exception); |
| } |
| } |
| return null; |
| } |
| } |