/* * 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() { } }