1 files changed, 51 insertions, 0 deletions
diff --git a/camera2/portability/src/com/android/ex/camera2/portability/util/SystemProperties.java b/camera2/portability/src/com/android/ex/camera2/portability/util/SystemProperties.java
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+++ b/camera2/portability/src/com/android/ex/camera2/portability/util/SystemProperties.java
@@ -0,0 +1,51 @@
+/*
+ * 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() {
+    }
+}