UserDictionaryCompatUtils.java revision 03a1c442aeddbd511be92e11465b6206d2ca976c 
1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.inputmethod.compat;
18
19import android.content.Context;
20import android.provider.UserDictionary.Words;
21
22import java.lang.reflect.Method;
23import java.util.Locale;
24
25public final class UserDictionaryCompatUtils {
26    // UserDictionary.Words#addWord(Context, String, int, String, Locale) was introduced
27    // in API level 16 (Build.VERSION_CODES.JELLY_BEAN).
28    private static final Method METHOD_addWord = CompatUtils.getMethod(Words.class, "addWord",
29            Context.class, String.class, int.class, String.class, Locale.class);
30
31    @SuppressWarnings("deprecation")
32    public static void addWord(final Context context, final String word,
33            final int freq, final String shortcut, final Locale locale) {
34        if (hasNewerAddWord()) {
35            CompatUtils.invoke(Words.class, null, METHOD_addWord, context, word, freq, shortcut,
36                    locale);
37        } else {
38            // Fall back to the pre-JellyBean method.
39            final int localeType;
40            if (null == locale) {
41                localeType = Words.LOCALE_TYPE_ALL;
42            } else {
43                final Locale currentLocale = context.getResources().getConfiguration().locale;
44                if (locale.equals(currentLocale)) {
45                    localeType = Words.LOCALE_TYPE_CURRENT;
46                } else {
47                    localeType = Words.LOCALE_TYPE_ALL;
48                }
49            }
50            Words.addWord(context, word, freq, localeType);
51        }
52    }
53
54    public static final boolean hasNewerAddWord() {
55        return null != METHOD_addWord;
56    }
57}
58