Android MediaPlayer无法正确播放音频

Question

My app is playing 5 different songs from raw folder, I listed the songs using list-View and array adapter. the problem with my code is it works fine when I play any song then I play another song anywhere from list but when I want to play third song it won't play but the first two songs I played before is can be played and paused. I tried this problems in many different way but all in vain. below is the code i included.

package khan.panizai.adele21;


import java.util.List;


import android.app.ListActivity;

import android.media.MediaPlayer;

import android.os.Bundle;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

public class MusicActivity extends ListActivity {

    MediaPlayer s1,s2,s3,s4,s5;

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.music_layout);

        Log.d("Saoud123", "music activity is called");

        s1 = MediaPlayer.create(MusicActivity.this, R.raw.s1_rolling_in_the_deep);

        s2 = MediaPlayer.create(MusicActivity.this, R.raw.s2_turning_tabels);

        s3 = MediaPlayer.create(MusicActivity.this, R.raw.s3_dont_you_remember);

        s4 = MediaPlayer.create(MusicActivity.this, R.raw.s4_set_fire_to_the_rain);

        s5 = MediaPlayer.create(MusicActivity.this, R.raw.s5_someone_like_you);




        setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, 

                 getResources().getStringArray(R.array.songs_list)));


    }


    @Override

    protected void onListItemClick(ListView l, View v, int position, long id) {


        //get selected items
        String selectedValue = (String) getListAdapter().getItem(position);



        if(getListAdapter().getItem(position).equals("Rolling in the deep")){


            //stop other songs and play this
            if(s2.isPlaying()||s3.isPlaying()||s4.isPlaying()||s5.isPlaying()){
                s2.pause();s3.pause();s4.pause();s5.pause();

                s2.seekTo(0);s3.seekTo(0);s4.seekTo(0);s5.seekTo(0);
                }

                s1.start();

                s1.setLooping(true);    
        }


        else if(getListAdapter().getItem(position).equals("Turning tables")){

            //stop other songs and play this

            if(s1.isPlaying()||s3.isPlaying()||s4.isPlaying()||s5.isPlaying()){

                s1.pause();s3.pause();s4.pause();s5.pause();

                s1.seekTo(0);s3.seekTo(0);s4.seekTo(0);s5.seekTo(0);

                }

                s2.start();


                s2.setLooping(true);    
        }

else if(getListAdapter().getItem(position).equals("Dont you remember")){

            //stop other songs and play this

            if(s2.isPlaying()||s1.isPlaying()||s4.isPlaying()||s5.isPlaying()){

                s2.pause();s1.pause();s4.pause();s5.pause();

                s2.seekTo(0);s1.seekTo(0);s4.seekTo(0);s5.seekTo(0);

                }

                s3.start();


                s3.setLooping(true);    
        }

else if(getListAdapter().getItem(position).equals("Set fire to the rain")){

            //stop other songs and play this

            if(s2.isPlaying()||s3.isPlaying()||s1.isPlaying()||s5.isPlaying()){

                s2.pause();s3.pause();s1.pause();s5.pause();

                s2.seekTo(0);s3.seekTo(0);s1.seekTo(0);s5.seekTo(0);

                }

                s4.start();


                s4.setLooping(true);    
        }

        else if(getListAdapter().getItem(position).equals("Someone like you")){

            //stop other songs and play this

            if(s2.isPlaying()||s3.isPlaying()||s4.isPlaying()||s1.isPlaying()){

                s2.pause();s3.pause();s4.pause();s1.pause();

                s2.seekTo(0);s3.seekTo(0);s4.seekTo(0);s1.seekTo(0);

                }
                s5.start();



                s5.setLooping(true);    
        }


    }

    @Override

    public void onBackPressed() {
        if(s1.isPlaying()||s2.isPlaying()||s3.isPlaying()||s4.isPlaying()

                ||s5.isPlaying())

            s1.stop();s2.stop();s3.stop();s4.stop();s5.stop();

        super.onBackPressed();
    }

    @Override

    protected void onDestroy() {

        if(s1.isPlaying()||s2.isPlaying()||s3.isPlaying()||s4.isPlaying()
                ||s5.isPlaying())

            s1.release();s2.release();s3.release();s4.release();s5.release();

        super.onDestroy();
    }


}

here is the logcat error msgs

01-31 19:15:19.485: D/AbsListView(9369): setCacheColorHint current in default theme.

01-31 19:15:19.485: D/Saoud123(9369): music activity is called

01-31 19:15:19.487: D/MediaPlayer(9369): mPlayerID = 128

01-31 19:15:19.509: D/MediaPlayer(9369): mPlayerID = 129

01-31 19:15:19.554: D/MediaPlayer(9369): mPlayerID = 130

01-31 19:15:19.590: D/MediaPlayer(9369): mPlayerID = 131

01-31 19:15:19.626: D/MediaPlayer(9369): mPlayerID = 132

01-31 19:15:20.336: I/MediaPlayer(9369): Duration update (duration=229392)

01-31 19:15:20.506: I/MediaPlayer(9369): Duration update (duration=250200)

01-31 19:15:20.556: I/MediaPlayer(9369): Duration update (duration=243288)

01-31 19:15:20.656: I/MediaPlayer(9369): Duration update (duration=241776)

01-31 19:15:20.663: I/MediaPlayer(9369): Duration update (duration=287136)

01-31 19:15:51.687: E/MediaPlayer(9369): pause called in state 8

01-31 19:15:51.688: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:51.688: E/MediaPlayer(9369): pause called in state 8

01-31 19:15:51.688: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:51.692: E/MediaPlayer(9369): pause called in state 8

01-31 19:15:51.692: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:51.692: E/MediaPlayer(9369): Attempt to perform seekTo in wrong state: 

mPlayer=0x21a800, mCurrentState=0

01-31 19:15:51.692: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:51.692: E/MediaPlayer(9369): Attempt to perform seekTo in wrong state: 
mPlayer=0x2a4a10, mCurrentState=0

01-31 19:15:51.692: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:51.693: E/MediaPlayer(9369): Attempt to perform seekTo in wrong state: mPlayer=0x295ea0, mCurrentState=0

01-31 19:15:51.693: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:51.708: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:51.708: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:51.708: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:51.708: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:51.708: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:51.709: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:59.592: E/MediaPlayer(9369): pause called in state 0

01-31 19:15:59.592: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:59.592: E/MediaPlayer(9369): pause called in state 0

01-31 19:15:59.592: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:59.593: E/MediaPlayer(9369): Attempt to perform seekTo in wrong state: 

mPlayer=0x2a4a10, mCurrentState=0
01-31 19:15:59.594: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:59.594: E/MediaPlayer(9369): Attempt to perform seekTo in wrong state: 
mPlayer=0x295ea0, mCurrentState=0

01-31 19:15:59.594: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:59.594: E/MediaPlayer(9369): start called in state 0

01-31 19:15:59.594: E/MediaPlayer(9369): error (-38, 0)

01-31 19:15:59.598: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:59.598: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:59.598: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:59.598: E/MediaPlayer(9369): Error (-38,0)

01-31 19:15:59.598: E/MediaPlayer(9369): Error (-38,0)

Answer 1

Refer to my answer in this question : Problems with Media Player

Mostly you might need to check if each song is playing individually . and if it is, you should stop it. Problem might be in the way you have checked if any of the other media players are playing, and pausing all of them irrespective of which media player is stopped.

That is, you should check for one, and stop it if it is playing, one after the other like in that post I have linked.