| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * 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 com.android.ex.camera2.portability.util; |
| |
| import com.android.ex.camera2.portability.debug.Log; |
| |
| import java.lang.reflect.Method; |
| |
| /** |
| * Mirrors hidden class {@link android.os.SystemProperties} (available since API Level 1). |
| */ |
| public final class SystemProperties { |
| private static final Log.Tag TAG = new Log.Tag("SysProps"); |
| |
| /** |
| * Gets system properties set by <code>adb shell setprop <em>key</em> <em>value</em></code> |
| * |
| * @param key the property key. |
| * @param defaultValue the value to return if the property is undefined or empty (this parameter |
| * may be {@code null}). |
| * @return the system property value or the default value. |
| */ |
| public static String get(String key, String defaultValue) { |
| try { |
| final Class<?> systemProperties = Class.forName("android.os.SystemProperties"); |
| final Method get = systemProperties.getMethod("get", String.class, String.class); |
| return (String) get.invoke(null, key, defaultValue); |
| } catch (Exception e) { |
| // This should never happen |
| Log.e(TAG, "Exception while getting system property: ", e); |
| return defaultValue; |
| } |
| } |
| |
| private SystemProperties() { |
| } |
| } |