Support EditorInfo#hintLocales in compat library.

This CL updates LatinIME's compatibility library so that we can access
EditorInfo#hintLocales without directly depending on unreleased SDK.

Bug: 22859862
Change-Id: I4ba7d294bc314002c3abf8842f097a4249783364

1 files changed, 34 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/compat/LocaleListCompatUtils.java b/java/src/com/android/inputmethod/compat/LocaleListCompatUtils.java
new file mode 100644
index 000000000..01030aedd
--- /dev/null
+++ b/java/src/com/android/inputmethod/compat/LocaleListCompatUtils.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2016 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 java.lang.reflect.Method;
+import java.util.Locale;
+
+public final class LocaleListCompatUtils {
+    private static final Class CLASS_LocaleList = CompatUtils.getClass("android.util.LocaleList");
+    private static final Method METHOD_getPrimary =
+            CompatUtils.getMethod(CLASS_LocaleList, "getPrimary");
+
+    private LocaleListCompatUtils() {
+        // This utility class is not publicly instantiable.
+    }
+
+    public static Locale getPrimary(final Object localeList) {
+        return (Locale) CompatUtils.invoke(localeList, null, METHOD_getPrimary);
+    }
+}