1 files changed, 79 insertions, 0 deletions
diff --git a/common/src/com/android/tv/common/util/SystemPropertiesProxy.java b/common/src/com/android/tv/common/util/SystemPropertiesProxy.java
new file mode 100644
index 00000000..a3ffd0fa
--- /dev/null
+++ b/common/src/com/android/tv/common/util/SystemPropertiesProxy.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2015 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.tv.common.util;
+
+import android.util.Log;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+/**
+ * Proxy class that gives an access to a hidden API {@link android.os.SystemProperties#getBoolean}.
+ */
+public class SystemPropertiesProxy {
+    private static final String TAG = "SystemPropertiesProxy";
+
+    private SystemPropertiesProxy() {}
+
+    public static boolean getBoolean(String key, boolean def) throws IllegalArgumentException {
+        try {
+            Class SystemPropertiesClass = Class.forName("android.os.SystemProperties");
+            Method getBooleanMethod =
+                    SystemPropertiesClass.getDeclaredMethod(
+                            "getBoolean", String.class, boolean.class);
+            getBooleanMethod.setAccessible(true);
+            return (boolean) getBooleanMethod.invoke(SystemPropertiesClass, key, def);
+        } catch (InvocationTargetException
+                | IllegalAccessException
+                | NoSuchMethodException
+                | ClassNotFoundException e) {
+            Log.e(TAG, "Failed to invoke SystemProperties.getBoolean()", e);
+        }
+        return def;
+    }
+
+    public static int getInt(String key, int def) throws IllegalArgumentException {
+        try {
+            Class SystemPropertiesClass = Class.forName("android.os.SystemProperties");
+            Method getIntMethod =
+                    SystemPropertiesClass.getDeclaredMethod("getInt", String.class, int.class);
+            getIntMethod.setAccessible(true);
+            return (int) getIntMethod.invoke(SystemPropertiesClass, key, def);
+        } catch (InvocationTargetException
+                | IllegalAccessException
+                | NoSuchMethodException
+                | ClassNotFoundException e) {
+            Log.e(TAG, "Failed to invoke SystemProperties.getInt()", e);
+        }
+        return def;
+    }
+
+    public static String getString(String key, String def) throws IllegalArgumentException {
+        try {
+            Class SystemPropertiesClass = Class.forName("android.os.SystemProperties");
+            Method getIntMethod =
+                    SystemPropertiesClass.getDeclaredMethod("get", String.class, String.class);
+            getIntMethod.setAccessible(true);
+            return (String) getIntMethod.invoke(SystemPropertiesClass, key, def);
+        } catch (InvocationTargetException
+                | IllegalAccessException
+                | NoSuchMethodException
+                | ClassNotFoundException e) {
+            Log.e(TAG, "Failed to invoke SystemProperties.get()", e);
+        }
+        return def;
+    }
+}