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POAndroid: Progress Dialog with AsyncTask
 

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  1. POAndroid: Progress Dialog with AsyncTask
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    <p>Since the game requires TTS, and need quite a long time to load, I would like to implement Progress Dialog (PD), as <strong>either</strong> in the following ways:</p> <h2>Implement AsyncTask in Game Index Page:</h2> <p>This will show the PD, but the PD is freezed, i.e. the looping circle inside the PD is not looping.</p> <pre><code> buttonC.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { new initialize_game().execute(); } }); private class initialize_game extends AsyncTask&lt;String,Integer,String&gt; { @Override protected void onPreExecute() { dialog= new ProgressDialog(Index_game.this); dialog.setIndeterminate(true); dialog.setCancelable(false); dialog.setMessage("Loading!\nPlease wait..."); dialog.show(); } @Override protected String doInBackground(String... params) { buttonC.setBackgroundColor(getResources().getColor(R.color.tran_black)); Intent intent = new Intent(Index_game.this, Game_star_intro.class); intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION); startActivityForResult(intent, 0); overridePendingTransition(0, 0); // 0 for no animation Index_game.this.finish(); return "Done!"; } protected void onPostExecute(String result) { super.onPostExecute(result); Log.i("result","" +result); if(result!=null) { dialog.dismiss(); } } } </code></pre> <h2>AsyncTask for TTS:</h2> <p>Once clicked from the Game Index Page, no PD is shown until the Game is loaded fully, and at that time then the PD pops up and off for a millisecond, i.e. even worse than that above.</p> <pre><code>private class MainFrameTask extends AsyncTask&lt;String,Integer,String&gt; implements OnInitListener, OnUtteranceCompletedListener { private Index_game_card_intro mainFrame = null; public MainFrameTask(Index_game_card_intro mainFrame) { this.mainFrame = mainFrame; } @Override protected void onCancelled() { stopProgressDialog(); super.onCancelled(); } @Override protected void onPreExecute() { startProgressDialog(); } @Override protected String doInBackground(String... params) { // setup TTS part 1.1 mTts = new TextToSpeech(Index_game_card_intro.this, this); // TextToSpeech.OnInitListener return "Done!"; } protected void onPostExecute(String result) { stopProgressDialog(); } // setup TTS part 2 @Override public void onUtteranceCompleted(String utteranceId) { Log.v(TAG, "Get completed message for the utteranceId " + utteranceId); lastUtterance = Integer.parseInt(utteranceId); } // setup TTS part 3 @Override public void onInit(int status) { if(status == TextToSpeech.SUCCESS) { int result = mTts.setLanguage(Locale.US); // &lt;====== set speech location mTts.setSpeechRate((float) 0.8); mTts.setPitch(1.0f); if(result == TextToSpeech.LANG_MISSING_DATA || result == TextToSpeech.LANG_NOT_SUPPORTED) { // button_header.setEnabled(false); } else { // button_header.setEnabled(true); mTts.setOnUtteranceCompletedListener(this); } } } } // setup TTS part 4 private void speakText() { lastUtterance++; if(lastUtterance &gt;= loveArray.length) { lastUtterance = 0; } Log.v(TAG, "the begin utterance is " + lastUtterance); for(int i = lastUtterance; i &lt; loveArray.length; i++) { params.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, String.valueOf(i)); mTts.speak(loveArray[i], TextToSpeech.QUEUE_ADD, params); mTts.playSilence(ttsilience, TextToSpeech.QUEUE_ADD, null); } } </code></pre> <h2>Question:</h2> <p>I found that the Progress Dialog does not show out when Button C in the game index is pressed. However, when the <code>Game_star_intro</code> is finally loaded, the progress dialog pops up for a very very short time and then gone.</p> <p>I would like to show the ProgressDialog when it is loading up the game, not after the game is loaded then the dialog pops for a millisecond. </p> <p>In this way, I have also tried to put the load TTS in <code>AsyncTask</code> inside <code>Game_star_intro</code>, yet the result is the same: the dialog just pops up for a millisecond.</p> <p>Actually how should the AsyncTask be coded?? I have followed some website like this <a href="http://karanbalkar.com/2012/10/tutorial-5-custom-progressdialog-with-asynctask/" rel="nofollow">http://karanbalkar.com/2012/10/tutorial-5-custom-progressdialog-with-asynctask/</a></p> <p>Thanks for your time!</p>
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    1. COHave you seen this link http://stackoverflow.com/questions/10493528/progress-dialog-with-asynctask?rq=1?
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