1 files changed, 39 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/research/ResearchSettings.java b/java/src/com/android/inputmethod/research/ResearchSettings.java
new file mode 100644
index 000000000..1f899ee4c
--- /dev/null
+++ b/java/src/com/android/inputmethod/research/ResearchSettings.java
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2013 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.inputmethod.research;
+
+import android.content.SharedPreferences;
+
+import java.util.UUID;
+
+public final class ResearchSettings {
+    public static final String PREF_RESEARCH_LOGGER_UUID = "pref_research_logger_uuid";
+
+    private ResearchSettings() {
+        // Intentional empty constructor for singleton.
+    }
+
+    public static String readResearchLoggerUuid(final SharedPreferences prefs) {
+        if (prefs.contains(PREF_RESEARCH_LOGGER_UUID)) {
+            return prefs.getString(PREF_RESEARCH_LOGGER_UUID, null);
+        }
+        // Generate a random string as uuid if not yet set
+        final String newUuid = UUID.randomUUID().toString();
+        prefs.edit().putString(PREF_RESEARCH_LOGGER_UUID, newUuid).apply();
+        return newUuid;
+    }
+}