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/*
* Copyright (C) 2011 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.example.android.hellospellchecker;
import android.app.Activity;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import android.util.Log;
import android.view.textservice.SentenceSuggestionsInfo;
import android.view.textservice.SpellCheckerSession;
import android.view.textservice.SuggestionsInfo;
import android.view.textservice.TextInfo;
import android.view.textservice.TextServicesManager;
import android.view.textservice.SpellCheckerSession.SpellCheckerSessionListener;
import android.widget.TextView;
import java.lang.StringBuilder;
public class HelloSpellCheckerActivity extends Activity implements SpellCheckerSessionListener {
private static final String TAG = HelloSpellCheckerActivity.class.getSimpleName();
private static final int NOT_A_LENGTH = -1;
private TextView mMainView;
private SpellCheckerSession mScs;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mMainView = (TextView)findViewById(R.id.main);
}
private boolean isSentenceSpellCheckSupported() {
return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
}
@Override
public void onResume() {
super.onResume();
final TextServicesManager tsm = (TextServicesManager) getSystemService(
Context.TEXT_SERVICES_MANAGER_SERVICE);
mScs = tsm.newSpellCheckerSession(null, null, this, true);
if (mScs != null) {
// Instantiate TextInfo for each query
// TextInfo can be passed a sequence number and a cookie number to identify the result
if (isSentenceSpellCheckSupported()) {
// Note that getSentenceSuggestions works on JB or later.
Log.d(TAG, "Sentence spellchecking supported.");
mScs.getSentenceSuggestions(new TextInfo[] {new TextInfo("tgisis")}, 3);
mScs.getSentenceSuggestions(new TextInfo[] {new TextInfo(
"I wold like to here form you")}, 3);
mScs.getSentenceSuggestions(new TextInfo[] {new TextInfo("hell othere")}, 3);
} else {
// Note that getSuggestions() is a deprecated API.
// It is recommended for an application running on Jelly Bean or later
// to call getSentenceSuggestions() only.
mScs.getSuggestions(new TextInfo("tgis"), 3);
mScs.getSuggestions(new TextInfo("hllo"), 3);
mScs.getSuggestions(new TextInfo("helloworld"), 3);
}
} else {
Log.e(TAG, "Couldn't obtain the spell checker service.");
}
}
@Override
public void onPause() {
super.onPause();
if (mScs != null) {
mScs.close();
}
}
private void dumpSuggestionsInfoInternal(
final StringBuilder sb, final SuggestionsInfo si, final int length, final int offset) {
// Returned suggestions are contained in SuggestionsInfo
final int len = si.getSuggestionsCount();
sb.append('\n');
for (int j = 0; j < len; ++j) {
if (j != 0) {
sb.append(", ");
}
sb.append(si.getSuggestionAt(j));
}
sb.append(" (" + len + ")");
if (length != NOT_A_LENGTH) {
sb.append(" length = " + length + ", offset = " + offset);
}
}
/**
* Callback for {@link SpellCheckerSession#getSuggestions(TextInfo, int)}
* and {@link SpellCheckerSession#getSuggestions(TextInfo[], int, boolean)}
* @param results an array of {@link SuggestionsInfo}s.
* These results are suggestions for {@link TextInfo}s queried by
* {@link SpellCheckerSession#getSuggestions(TextInfo, int)} or
* {@link SpellCheckerSession#getSuggestions(TextInfo[], int, boolean)}
*/
@Override
public void onGetSuggestions(final SuggestionsInfo[] arg0) {
Log.d(TAG, "onGetSuggestions");
final StringBuilder sb = new StringBuilder();
for (int i = 0; i < arg0.length; ++i) {
dumpSuggestionsInfoInternal(sb, arg0[i], 0, NOT_A_LENGTH);
}
runOnUiThread(new Runnable() {
@Override
public void run() {
mMainView.append(sb.toString());
}
});
}
/**
* Callback for {@link SpellCheckerSession#getSentenceSuggestions(TextInfo[], int)}
* @param results an array of {@link SentenceSuggestionsInfo}s.
* These results are suggestions for {@link TextInfo}s
* queried by {@link SpellCheckerSession#getSentenceSuggestions(TextInfo[], int)}.
*/
@Override
public void onGetSentenceSuggestions(final SentenceSuggestionsInfo[] arg0) {
if (!isSentenceSpellCheckSupported()) {
Log.e(TAG, "Sentence spell check is not supported on this platform, "
+ "but accidentially called.");
return;
}
Log.d(TAG, "onGetSentenceSuggestions");
final StringBuilder sb = new StringBuilder();
for (int i = 0; i < arg0.length; ++i) {
final SentenceSuggestionsInfo ssi = arg0[i];
for (int j = 0; j < ssi.getSuggestionsCount(); ++j) {
dumpSuggestionsInfoInternal(
sb, ssi.getSuggestionsInfoAt(j), ssi.getOffsetAt(j), ssi.getLengthAt(j));
}
}
runOnUiThread(new Runnable() {
@Override
public void run() {
mMainView.append(sb.toString());
}
});
}
}
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