Move SharedPreferencesCompat to com.android.inputmethod.compat

Change-Id: Ied336339b8eb3643f14517c251b07c09398f61fe

1 files changed, 53 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/compat/SharedPreferencesCompat.java b/java/src/com/android/inputmethod/compat/SharedPreferencesCompat.java
new file mode 100644
index 000000000..38736f3a1
--- /dev/null
+++ b/java/src/com/android/inputmethod/compat/SharedPreferencesCompat.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2010 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.compat;
+
+import android.content.SharedPreferences;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+/**
+ * Reflection utils to call SharedPreferences$Editor.apply when possible,
+ * falling back to commit when apply isn't available.
+ */
+public class SharedPreferencesCompat {
+    private static final Method sApplyMethod = findApplyMethod();
+
+    private static Method findApplyMethod() {
+        try {
+            return SharedPreferences.Editor.class.getMethod("apply");
+        } catch (NoSuchMethodException unused) {
+            // fall through
+        }
+        return null;
+    }
+
+    public static void apply(SharedPreferences.Editor editor) {
+        if (sApplyMethod != null) {
+            try {
+                sApplyMethod.invoke(editor);
+                return;
+            } catch (InvocationTargetException unused) {
+                // fall through
+            } catch (IllegalAccessException unused) {
+                // fall through
+            }
+        }
+        editor.commit();
+    }
+}