HelloSpellCheckerActivity.java revision 47b8def1e3ea4d77ff6e988c37f67b663d9c33d9 
1/*
2 * Copyright (C) 2011 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.example.android.hellospellchecker;
18
19import android.app.Activity;
20import android.content.Context;
21import android.os.Bundle;
22import android.util.Log;
23import android.view.textservice.SpellCheckerSession;
24import android.view.textservice.SuggestionsInfo;
25import android.view.textservice.TextInfo;
26import android.view.textservice.TextServicesManager;
27import android.view.textservice.SpellCheckerSession.SpellCheckerSessionListener;
28import android.widget.TextView;
29import java.lang.StringBuilder;
30
31public class HelloSpellCheckerActivity extends Activity implements SpellCheckerSessionListener {
32    private static final String TAG = HelloSpellCheckerActivity.class.getSimpleName();
33    private TextView mMainView;
34    private SpellCheckerSession mScs;
35    /** Called when the activity is first created. */
36    @Override
37    public void onCreate(Bundle savedInstanceState) {
38        super.onCreate(savedInstanceState);
39        setContentView(R.layout.main);
40        mMainView = (TextView)findViewById(R.id.main);
41    }
42
43    @Override
44    public void onResume() {
45        super.onResume();
46        final TextServicesManager tsm = (TextServicesManager) getSystemService(
47                Context.TEXT_SERVICES_MANAGER_SERVICE);
48        mScs = tsm.newSpellCheckerSession(null, null, this, true);
49        if (mScs != null) {
50            // Instantiate TextInfo for each query
51            // TextInfo can be passed a sequence number and a cookie number to identify the result
52            mScs.getSuggestions(new TextInfo("tgis"), 3);
53            mScs.getSuggestions(new TextInfo("hllo"), 3);
54            mScs.getSuggestions(new TextInfo("helloworld"), 3);
55        } else {
56            Log.e(TAG, "Couldn't obtain the spell checker service.");
57        }
58    }
59
60    @Override
61    public void onPause() {
62        super.onPause();
63        if (mScs != null) {
64            mScs.close();
65        }
66    }
67
68    @Override
69    public void onGetSuggestions(final SuggestionsInfo[] arg0) {
70        final StringBuilder sb = new StringBuilder();
71        for (int i = 0; i < arg0.length; ++i) {
72            // Returned suggestions are contained in SuggestionsInfo
73            final int len = arg0[i].getSuggestionsCount();
74            sb.append('\n');
75            for (int j = 0; j < len; ++j) {
76                sb.append("," + arg0[i].getSuggestionAt(j));
77            }
78            sb.append(" (" + len + ")");
79        }
80        runOnUiThread(new Runnable() {
81            @Override
82            public void run() {
83                mMainView.append(sb.toString());
84            }
85        });
86    }
87}
88