проблемы с продолжительностью mp3 и показом изображения и текста

Question

Я пытаюсь отобразить изображение и текст в определенное время воспроизведения mp3, но когда я запускаю проигрыватель и хочу показать изображение вместе с текстом для каждого изображения, mp3 воспроизводится правильно с URL-адреса. и отображается текст, но изображения (найденные локально в приложении) имеют задержку в две секунды по отношению к законному тексту. Я выполняю эту задачу следующим образом;

public class WCourse extends Activity implements OnClickListener, OnTouchListener, OnCompletionListener, OnBufferingUpdateListener{

//mp3 player
private ImageButton buttonPlayPause;
private Button buttonTaketest;
private SeekBar seekBarProgress;
public EditText editTextSongURL;
public TextView subtitles;

//intent get the course title
public static TextView TextViewTopTitle;

//Slider
public int currentimageindex=0;
Timer timer;
    TimerTask task;
ImageView slidingimage;

//images ids
private int[] IMAGE_IDS = {
        R.drawable.c5_d1, R.drawable.c5_d2, R.drawable.c5_d3, R.drawable.c5_d4, R.drawable.c5_d5,
        R.drawable.c5_d6, R.drawable.c5_d7, R.drawable.c5_d8, R.drawable.c5_d9, R.drawable.c5_d10,
        R.drawable.c5_d11, R.drawable.c5_d12, R.drawable.c5_d13, R.drawable.c5_d14, R.drawable.c5_d15,
        R.drawable.c5_d16, R.drawable.c5_d17, R.drawable.c5_d18, R.drawable.c5_d19, R.drawable.c5_d20,
        R.drawable.c5_d21, R.drawable.c5_d22, R.drawable.c5_d23, R.drawable.c5_d24, R.drawable.c5_d25,
        R.drawable.c5_d26, R.drawable.c5_d27, R.drawable.c5_d28, R.drawable.c5_d29, R.drawable.c5_d30,
        R.drawable.c5_d31, R.drawable.c5_d32, R.drawable.c5_d33, R.drawable.c5_d34, R.drawable.c5_d35,
        R.drawable.c5_d36, R.drawable.c5_d37, R.drawable.c5_d38, R.drawable.c5_d39, R.drawable.c5_d40,
        R.drawable.c5_d41, R.drawable.c5_d42, R.drawable.c5_d43, R.drawable.c5_d44, R.drawable.c5_d45,
        R.drawable.c5_d46
    };      
private MediaPlayer mediaPlayer;
private int mediaFileLengthInMilliseconds; // this value contains the song duration in milliseconds. Look at getDuration() method in MediaPlayer class

private final Handler handler = new Handler();

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.watch_course);        
    //intent
    TextViewTopTitle = (TextView) findViewById(R.id.TextViewTopTitle);
    Bundle bundle = getIntent().getExtras();
    TextViewTopTitle.setText(bundle.getString("RESULT2")+" ");
    getText(bundle.getString("RESULT2"));        
    subtitles = (TextView) findViewById(R.id.subs);
    // handler of slider
    final Handler mHandler = new Handler();    
    initView();          
    // Create runnable for posting
    final Runnable mUpdateResults = new Runnable() {
        public void run() {
            AnimateandSlideShow();              
        }
    };                      
    Timer timer = new Timer();

    timer.scheduleAtFixedRate(new TimerTask() {
        public void run() {         
         mHandler.post(mUpdateResults);
    }
}, 0, 500); }



// Helper method to start the animation on the splash screen
         public void AnimateandSlideShow() {                
    //abc = mediaPlayer.getCurrentPosition();
    slidingimage = (ImageView)findViewById(R.id.ImageView3_Left);
    slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
    int abc = mediaPlayer.getCurrentPosition();
    if(abc > 0 && abc < 18000 ){
        currentimageindex=0;
        //slidingimage.getAnimation();
        subtitles.setText(this.getString(R.string.t1));
    }
    if(abc >= 18001 && abc < 26000){
        currentimageindex=1;
        subtitles.setText(this.getString(R.string.t2));
    }
    if(abc >= 24000 && abc < 32000){
        currentimageindex=2;
        subtitles.setText(this.getString(R.string.t3));
    }
    if(abc >= 30000 && abc < 37000){            
        currentimageindex=3;
        subtitles.setText(this.getString(R.string.t4));
    }
    if(abc >= 35000 && abc < 41000){
        currentimageindex=4;
        subtitles.setText(this.getString(R.string.t5));
    }
    if(abc >= 39000 && abc < 46000){
        currentimageindex=5;
        subtitles.setText(this.getString(R.string.t6));
    }
    if(abc >= 44000 && abc < 50000){
        currentimageindex=6;
        subtitles.setText(this.getString(R.string.t7));
    }            
}   
private void initView() {

    buttonTaketest = (Button)findViewById(R.id.taketest);
    buttonTaketest.setOnClickListener(this);
    buttonPlayPause = (ImageButton)findViewById(R.id.ButtonTestPlayPause);
    buttonPlayPause.setOnClickListener(this);

    seekBarProgress = (SeekBar)findViewById(R.id.SeekBarTestPlay);  
    seekBarProgress.setMax(99); // It means 100% .0-99
    seekBarProgress.setOnTouchListener(this);
    editTextSongURL = (EditText)findViewById(R.id.EditTextSongURL);
    editTextSongURL.setText(R.string.c5);

    mediaPlayer = new MediaPlayer();
    mediaPlayer.setOnBufferingUpdateListener(this);
    mediaPlayer.setOnCompletionListener(this);
}

/** Method which updates the SeekBar primary progress by current song playing position*/
private void primarySeekBarProgressUpdater() {
    seekBarProgress.setProgress((int)(((float)mediaPlayer.getCurrentPosition()/mediaFileLengthInMilliseconds)*100)); // This math construction give a percentage of "was playing"/"song length"
    if (mediaPlayer.isPlaying()) {
        Runnable notification = new Runnable() {
            public void run() {
                primarySeekBarProgressUpdater();
            }
        };
        handler.postDelayed(notification,1000);
    }
}

public void onClick(View v) {
    if(v.getId() == R.id.ButtonTestPlayPause){

        //ImageButton onClick event handler. Method which start/pause mediaplayer playing 
        try {
            mediaPlayer.setDataSource(editTextSongURL.getText().toString()); // setup song from http:// URL to mediaplayer data source
            mediaPlayer.prepare(); //  call this method after setup the datasource in setDataSource method. After calling prepare() the instance of MediaPlayer starts load data from URL to internal buffer.

            /**slidingimage = (ImageView)findViewById(R.id.ImageView3_Left);
            slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]); // setup song from http:// URL to mediaplayer data source
            currentimageindex++;
            slidingimage.getAnimation();*/                                  
        } catch (Exception e) {
            e.printStackTrace();
        }

        mediaFileLengthInMilliseconds = mediaPlayer.getDuration(); // gets the song length in milliseconds from URL                 
        if(!mediaPlayer.isPlaying()){
            mediaPlayer.start();
            buttonPlayPause.setImageResource(R.drawable.button_pause);                              
        }
        else {
            mediaPlayer.pause();                
            buttonPlayPause.setImageResource(R.drawable.button_play);
            //slidingimage.wait();

            //button on pause
        }           
        /**if(!slidingimage.isShown()){
            slidingimage.getAnimation();
            buttonPlayPause.setImageResource(R.drawable.button_pause); //button on playing


        }else {
            slidingimage.clearAnimation();              
            buttonPlayPause.setImageResource(R.drawable.button_play); //button on pause
        }*/

        primarySeekBarProgressUpdater();
    }
    if(v.getId() == R.id.taketest){
        //Go to WebView
        Intent i = new Intent("com.mariposatraining.courses.WebViewTest");
        startActivity(i);
    }
}

public boolean onTouch(View v, MotionEvent event) {
    if(v.getId() == R.id.SeekBarTestPlay){
        // Seekbar onTouch event handler. Method which seeks MediaPlayer to seekBar primary progress position
        if(mediaPlayer.isPlaying()){
            SeekBar sb = (SeekBar)v;
            int playPositionInMillisecconds = (mediaFileLengthInMilliseconds / 100) * sb.getProgress();
            mediaPlayer.seekTo(playPositionInMillisecconds);
        }
    }
    return false;
}

public void onCompletion(MediaPlayer mp) {
     // MediaPlayer onCompletion event handler. Method which calls then song playing is complete
    buttonPlayPause.setImageResource(R.drawable.button_play);
}

public void onBufferingUpdate(MediaPlayer mp, int percent) {
    // Method which updates the SeekBar secondary progress by current song loading from URL position
    seekBarProgress.setSecondaryProgress(percent);
}   

//get Course Text
    private void getText(String string) {


    Button backButton = (Button)this.findViewById(R.id.back2);
    backButton.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {           
        finish();         
      }       
    });    
}   

    @Override
    protected void onStop()
    {           
        super.onStop();
        mediaPlayer.stop();
        currentimageindex=0;    
        finish();

    }}

, которые фактически пытаются компенсировать показанное время для отображения изображений, но не работают! Любая идея, чтобы решить проблему временной задержки в две секунды?

Answer 1

хорошо, я решил это, с помощью этого кода, возможно, не идеально, но это решение для моего приложения:

slidingimage = (ImageView)findViewById(R.id.ImageView3_Left);
        slidingimage.setImageResource(IMAGE_IDS[currentimageindex%IMAGE_IDS.length]);
        int abc = mediaPlayer.getCurrentPosition();
        if(abc >= 0 && abc == 0 ){
            currentimageindex=0; //46 Test Value - Real Value 0
        }
        if(mediaPlayer.isPlaying() && abc > 1 && abc < 90100 ){
            currentimageindex=0;
            //slidingimage.getAnimation();
            subtitles.setText(this.getString(R.string.t1));

Очень просто, да. Надеюсь, это поможет другим ...