private void loadExercises(Integer lessonId) {
// retrieve sentences to practice from db for each exercise
try {
InputStream is = getAssets().open(DBHandler.DATABASE_NAME);
db = new DBHandler(PracticeActivity.this, is);
} catch (IOException e) {
e.printStackTrace();
}
if (db != null) {
exercises = db.findExercises(lessonId);
for (Exercise e : exercises) {
ArrayList<ScriptEntry> scripts = db.findScripts(e.get_id());
Collections.sort(scripts);
int i = 0;
for (ScriptEntry s : scripts) {
s.setScriptIndex(i);
i++;
}
e.setScriptEntries(scripts);
}
}
}
private void runScriptEntry() {
if (current.getShouldRunScript()) {
((Button) findViewById(R.id.btn_try_again)).setVisibility(View.GONE);
current.setShouldRunScript(
false); // prove to me again that I can execute everything ->go to the next exercise.
if (current.getCurrentScriptIndex()
< current.getCurrentExercise().getScriptEntries().size()) {
final ScriptEntry s = current.getCurrentScriptEntry();
if (s != null) {
runOnUiThread(
new Runnable() {
@Override
public void run() {
TextView child = new TextView(PracticeActivity.this);
child.setTextSize(20f);
LinearLayout parent = (LinearLayout) findViewById(R.id.contentFrame);
child.setText(s.getTextToShow());
LinearLayout.LayoutParams params =
new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
child.setLayoutParams(params);
ArrayList<TextView> items = new ArrayList<>();
items.add(child);
for (int i = parent.getChildCount() - 1; i >= 0; i--) {
TextView t = (TextView) parent.getChildAt(i);
parent.removeViewAt(i);
}
parent.addView(child);
}
});
// speak
Bundle b = new Bundle();
b.putString(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, s.get_id().toString());
switch (s.getFunctionId()) {
case 1: // The device is to speak (tts) the text_to_read (used to give instructions
// about the exercises)
TTS.setOnUtteranceProgressListener(
new UtteranceProgressListener() {
@Override
public void onStart(String utteranceId) {}
@Override
public void onDone(String utteranceId) {
if (current.getCurrentScriptEntry().getFunctionId() == 1) {
current.setShouldRunScript(true);
current.selectNextScript();
runScriptEntry();
}
}
@Override
public void onError(String utteranceId) {}
});
TTS.speak(s.getTextToRead(), TextToSpeech.QUEUE_FLUSH, null, s.get_id().toString());
break;
case 2:
// The device is to Read text(tts), Show sentence- tts, Listen to speech, Check
// against database info= stt. Listen and compare.
TTS.setOnUtteranceProgressListener(
new UtteranceProgressListener() {
@Override
public void onStart(String utteranceId) {
((Vibrator) getSystemService(VIBRATOR_SERVICE)).vibrate(10);
}
@Override
public void onDone(String utteranceId) {
promptSpeechInput(); // shows mic screen
// if voice recognition fails, ask again. no touching button
}
@Override
public void onError(String utteranceId) {}
});
TTS.speak(s.getTextToRead(), TextToSpeech.QUEUE_FLUSH, null, s.get_id().toString());
break;
case 3:
// only checks the speech -> do not provide any kind of model
// (neither spoken by the device nor on video)
// this method needs a little more time, for the sake of
// uability, to ask for the nest input. Users were getting confused about the sounds
// built in the Voice Recognition
new Handler()
.postDelayed(
new Runnable() {
@Override
public void run() {
promptSpeechInput();
}
},
TRANSITION_PAUSE);
break;
case 4:
// shows video and asks for audio input then checks audio
runOnUiThread(
new Runnable() {
@Override
public void run() {
final VideoView v = new VideoView(PracticeActivity.this);
final LinearLayout r = (LinearLayout) findViewById(R.id.videoFrame);
r.setVisibility(View.VISIBLE);
r.addView(v);
int videoResource =
getResources()
.getIdentifier("raw/" + s.getTextToRead(), null, getPackageName());
String path = "android.resource://" + getPackageName() + "/" + videoResource;
v.setVideoURI(Uri.parse(path));
v.setOnCompletionListener(
new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
r.removeView(v);
promptSpeechInput();
}
});
v.setOnPreparedListener(
new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
v.start();
}
});
}
});
break;
case 5: // only shows a video containing instructions. do not ask for audio back
runOnUiThread(
new Runnable() {
@Override
public void run() {
final VideoView v = new VideoView(PracticeActivity.this);
final LinearLayout r = (LinearLayout) findViewById(R.id.videoFrame);
r.setVisibility(View.VISIBLE);
r.addView(v);
int videoResource =
getResources()
.getIdentifier("raw/" + s.getTextToRead(), null, getPackageName());
String path = "android.resource://" + getPackageName() + "/" + videoResource;
v.setVideoURI(Uri.parse(path));
v.setOnCompletionListener(
new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
r.removeView(v);
current.setShouldRunScript(true);
current.selectNextScript();
runScriptEntry();
}
});
v.setOnPreparedListener(
new MediaPlayer.OnPreparedListener() {
@Override
public void onPrepared(MediaPlayer mp) {
v.start();
}
});
}
});
break;
}
}
} else { // exercise completed
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
if (exercises.size() > sharedPreferences.getInt("exercise_count", 0)) {
Intent i = new Intent(PracticeActivity.this, TransitionActivity.class);
startActivity(i);
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
current.setShouldRunScript(true);
} else {
Intent i = new Intent(PracticeActivity.this, LessonCompletedActivity.class);
startActivity(i);
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
}
finish();
}
}
}