I am trying to implement a spell checker service as described here called SampleSpellCheckerService but it seems the tutorial is incomplete and the source code for it does not seem to be available.
I am struggling with how to get a session from my spell checker service in the setSuggestionsFor() method of my activity, as highlighted here:
public class SpellCheckerSettingsActivity extends AppCompatActivity implements SpellCheckerSession.SpellCheckerSessionListener {
private static final String LOG_TAG = SpellCheckerSettingsActivity.class.getSimpleName();
private TextView textView = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_spell_checker_settings);
final EditText editText = (EditText)findViewById(R.id.editText);
textView = (TextView)findViewById(R.id.textView);
Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
fetchSuggestionsFor(editText.getText().toString());
}
});
startService(new Intent(this, SampleSpellCheckerService.class));
}
private void fetchSuggestionsFor(String input){
Log.d(LOG_TAG, "fetchSuggestionsFor(\"" + input + "\")");
/***************************************************
*
* This line is invalid. What do I replace it with?
*
***************************************************/
SpellCheckerSession session = SampleSpellCheckerService.getSession();
TextInfo[] textInfos = new TextInfo[]{ new TextInfo(input) };
int suggestionsLimit = 5;
session.getSentenceSuggestions(textInfos, suggestionsLimit);
}
@Override
public void onGetSuggestions(SuggestionsInfo[] results) {
Log.d(LOG_TAG, "onGetSuggestions(" + results + ")");
runOnUiThread(new Runnable() {
@Override
public void run() {
textView.setText("Suggestions obtained (TODO - get from results[])");
}
});
}
@Override
public void onGetSentenceSuggestions(SentenceSuggestionsInfo[] results) {
Log.d(LOG_TAG, "onGetSentenceSuggestions(" + results + ")");
if (results != null) {
final StringBuffer sb = new StringBuffer("");
for (SentenceSuggestionsInfo result : results) {
int n = result.getSuggestionsCount();
for (int i = 0; i < n; i++) {
int m = result.getSuggestionsInfoAt(i).getSuggestionsCount();
for (int k = 0; k < m; k++) {
sb.append(result.getSuggestionsInfoAt(i).getSuggestionAt(k))
.append("\n");
}
sb.append("\n");
}
}
runOnUiThread(new Runnable() {
@Override
public void run() {
textView.setText(sb.toString());
}
});
}
}
@Override
public void onDestroy() {
stopService(new Intent(this, SampleSpellCheckerService.class));
super.onDestroy();
}
}
So what is the correct way to get a session from SampleSpellCheckerService?
For completeness, here is my spell checker service class:
public class SampleSpellCheckerService extends SpellCheckerService {
public static final String LOG_TAG = SampleSpellCheckerService.class.getSimpleName();
public SampleSpellCheckerService() {
Log.d(LOG_TAG, "SampleSpellCheckerService");
}
@Override
public void onCreate() {
super.onCreate();
Log.d(LOG_TAG, "SampleSpellCheckerService.onCreate");
}
@Override
public Session createSession() {
Log.d(LOG_TAG, "createSession");
return new AndroidSpellCheckerSession();
}
private static class AndroidSpellCheckerSession extends SpellCheckerService.Session {
@Override
public void onCreate() {
Log.d(LOG_TAG, "AndroidSpellCheckerSession.onCreate");
}
@Override
public SentenceSuggestionsInfo[] onGetSentenceSuggestionsMultiple(TextInfo[] textInfos, int suggestionsLimit) {
Log.d(LOG_TAG, "onGetSentenceSuggestionsMultiple");
SentenceSuggestionsInfo[] suggestionsInfos = null;
//suggestionsInfo = new SuggestionsInfo();
//... // look up suggestions for TextInfo
return suggestionsInfos;
}
@Override
public SuggestionsInfo onGetSuggestions(TextInfo textInfo, int suggestionsLimit) {
Log.d(LOG_TAG, "onGetSuggestions");
SuggestionsInfo suggestionsInfo = null;
//suggestionsInfo = new SuggestionsInfo();
//... // look up suggestions for TextInfo
return suggestionsInfo;
}
@Override
public void onCancel() {
Log.d(LOG_TAG, "onCancel");
}
}
}
Here is my manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example">
<permission android:name="android.permission.BIND_TEXT_SERVICE" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<service
android:name="com.example.SampleSpellCheckerService"
android:label="@string/app_name"
android:enabled="true"
android:permission="android.permission.BIND_TEXT_SERVICE">
<intent-filter>
<action android:name="android.service.textservice.SpellCheckerService" />
</intent-filter>
<meta-data
android:name="android.view.textservice.scs"
android:resource="@xml/spellchecker" />
</service>
<activity android:name="com.example.SpellCheckerSettingsActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
And here is my spellchecker.xml:
<?xml version="1.0" encoding="utf-8"?>
<spell-checker
xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/spellchecker_name"
android:settingsActivity="com.example.SpellCheckerSettingsActivity">
<subtype
android:label="@string/subtype_generic"
android:subtypeLocale="en" />
/>
<subtype
android:label="@string/subtype_generic"
android:subtypeLocale="en_GB" />
/>
</spell-checker>
NB - I am testing with a Samsung device.
