개발자 질문/답변 게시판이 새로운 공간으로 이전되었습니다.

안드로이드 개발 질문/답변 (글 수 45,052)

mp3 앨범이미지 얻기 질문드립니다

AGLast

https://www.androidpub.com/android_dev_qna/2402575

2012.12.19 01:04:57

4716

앱개발 질문

간단한 mp3 예제를 작성하고 있습니다. 엄~청.. 야매로 만들고 있는데도 막히는 부분이 엄청 많네요 ㅠㅠ

현재 막히는 부분이

1. 쓰레드로 시크바 이동 + 현재 시간 표기 (파란색 부분으로 표시)

2. 리스트에서 선택한 mp3파일의 파일명으로 sd카드에 있는 mp3파일의 앨범이미지 제목등 따오기 (빨간색 부분으로 표시)

두 가지 문제 입니다. 2번질문 즉 앨범이미지 따오는게 더 급한문제인 것 같네요 어플 강종 되서 진행이 되지않아서..

제가볼땐 sellist 아이템 클릭 할 때 이미지등 설정하는건데 arraylist 사이즈가 0이라고 떠버리니 어디 문제인지 도통 모르겠습니다.. 도와주세요 ㅠㅠ

package com.example.mp3player02;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FilenameFilter;

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

import android.app.ListActivity;

import android.content.res.Resources;

import android.content.ContentResolver;

import android.content.ContentUris;

import android.content.Context;

import android.database.Cursor;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.graphics.drawable.BitmapDrawable;

import android.graphics.drawable.Drawable;

import android.media.AudioManager;

import android.media.MediaPlayer;

import android.media.MediaPlayer.OnCompletionListener;

import android.media.MediaPlayer.OnPreparedListener;

import android.net.Uri;

import android.os.Bundle;

import android.os.ParcelFileDescriptor;

import android.provider.MediaStore;

import android.provider.MediaStore.Audio.AudioColumns;

import android.provider.MediaStore.MediaColumns;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ImageView;

import android.widget.ListView;

import android.widget.ProgressBar;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

import android.widget.TabHost;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends ListActivity implements Runnable{

public String searname;// ROOT 占쏙옙罐占�

private static final String MEDIA_PATH = new String("/sdcard/");

SeekBar sbmusic;

TextView tvtitle;

TextView tvartist;

static ImageView albumimage;

TextView tvnow;

TextView tvend;

SeekBar sbvol;

EditText edit;// 占쏙옙占쏙옙占쌌니댐옙.

ListView searchlist;

ListView sellist;

Bitmap albumart;

public List<String> search;

private List<String> songs = new ArrayList<String>();

List<String> positions = new ArrayList<String>();

ArrayList<String> musicIDList = new ArrayList<String>(5);

ArrayList<String> albumIdList = new ArrayList<String>(5);

ArrayList<String> musicTitleList = new ArrayList<String>(5);

ArrayList<String> musicDataList = new ArrayList<String>(5);

private MediaPlayer mp = new MediaPlayer();

private int currentPosition = 0; // 占쏙옙占쏙옙占�占쏙옙占쏙옙 占쏙옙치占쌉니댐옙.

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

TabHost tabhost = (TabHost) findViewById(R.id.tabhost);

tabhost.setup();

TabHost.TabSpec spec;

spec = tabhost.newTabSpec("tab1");

spec.setContent(R.id.tab1);

spec.setIndicator("tab1");

tabhost.addTab(spec);

spec = tabhost.newTabSpec("tab2");

spec.setContent(R.id.tab2);

spec.setIndicator("tab2");

tabhost.addTab(spec);

spec = tabhost.newTabSpec("tab3");

spec.setContent(R.id.tab3);

spec.setIndicator("search");

tabhost.addTab(spec);

spec = tabhost.newTabSpec("tab4");

spec.setContent(R.id.tab4);

spec.setIndicator("play");

tabhost.addTab(spec);

tabhost.setCurrentTab(0);

updateSongList();

Button sear = (Button) findViewById(R.id.sear);

final EditText seartext = (EditText) findViewById(R.id.seartext);

searchlist = (ListView) findViewById(R.id.searlist);

sellist = (ListView) findViewById(R.id.selectlist);

sear.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

searname = seartext.getText().toString();

searupdateSongList();

}

});

// SD카占쏙옙觀占쏙옙占�占쏙옙占쏙옙 占쏙옙占쏙옙占�占쌀뤄옙占쏙옙占쏙옙 占쏙옙占쏙옙占쏙옙 占쌌니댐옙.

searchlist.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView<?> parent, View view,

int position, long id) {

currentPosition = position;

TextView tv1 = (TextView) parent.getChildAt(position)

.findViewById(R.id.sear_song_item_layout);

refresh(tv1.getText().toString());

}

});

sellist.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView<?> parent, View view,

int position, long id) {

Toast.makeText(MainActivity.this, "" + songs.size(), Toast.LENGTH_SHORT).show();

currentPosition = position;

String filen = sellist.getItemAtPosition(position).toString();

for(int i=0; i<songs.size(); ++i) {

if(musicDataList.get(i).toString() != null && filen.equals(musicDataList.get(i).toString())) {

getArtworkQuick(MainActivity.this, Integer.parseInt(albumIdList.get(i).toString()), 100, 100);

}

playSong(MEDIA_PATH +positions.get(position));

}

private void playSong(String songPath) {

final AudioManager audio = (AudioManager)getSystemService(AUDIO_SERVICE);

tvtitle = (TextView)findViewById(R.id.textView1);

tvartist = (TextView)findViewById(R.id.textView2);

albumimage = (ImageView)findViewById(R.id.imageView1);

tvnow = (TextView)findViewById(R.id.nowseekview);

tvend = (TextView)findViewById(R.id.endseekview);

sbvol = (SeekBar)findViewById(R.id.seekvolumn);

sbmusic = (SeekBar)findViewById(R.id.seekBar1);

int sMax = audio.getStreamMaxVolume(AudioManager.STREAM_MUSIC);

int svol = audio.getStreamVolume(AudioManager.STREAM_MUSIC);

sbvol.setMax(sMax);

sbvol.setProgress(svol);

sbmusic.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

public void onStopTrackingTouch(SeekBar seekbar) {

}

public void onProgressChanged(SeekBar seekbar, int progress, boolean fromuser) {

mp.seekTo(progress);

sbmusic.setProgress(progress);

int min = progress / 60000;

int sec = (progress % 60000) / 1000;

tvnow.setText(min + " : " + sec );

}

public void onStartTrackingTouch(SeekBar arg0) {

}

});

sbvol.setOnSeekBarChangeListener(

new OnSeekBarChangeListener() {

public void onStopTrackingTouch(SeekBar seekbar) {

}

public void onProgressChanged(SeekBar seekbar, int progress, boolean fromuser) {

audio.setStreamVolume(AudioManager.STREAM_MUSIC, progress, 0);

}

public void onStartTrackingTouch(SeekBar arg0) {

}

});

try {

String [] musicinfo = {MediaStore.Audio.Media._ID,

MediaStore.Audio.Media.ALBUM_ID,

MediaStore.Audio.Media.DATA,

MediaStore.Audio.Media.TITLE };

Cursor mcursor = managedQuery(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, musicinfo, null, null, null);

if(mcursor != null && mcursor.moveToFirst()) {

String musicID;

String albumID;

String musictitle;

String musicdata;

int musicIdcol = mcursor.getColumnIndex(MediaStore.Audio.Media._ID);

int albumIdcol = mcursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID);

int musictitlecol = mcursor.getColumnIndex(MediaStore.Audio.Media.TITLE);

int musicdatacol = mcursor.getColumnIndex(MediaStore.Audio.Media.DATA);

do {

musicID = mcursor.getString(musicIdcol);

albumID = mcursor.getString(albumIdcol);

musictitle = mcursor.getString(musictitlecol);

musicdata = mcursor.getString(musicdatacol);

musicIDList.add(musicID);

albumIdList.add(albumID);

musicTitleList.add(musictitle);

musicDataList.add(musicdata);

}while(mcursor.moveToNext());

}

mp.reset();

mp.setDataSource(songPath);

mp.setAudioStreamType(AudioManager.STREAM_MUSIC);

mp.setOnCompletionListener(new OnCompletionListener() {

public void onCompletion(MediaPlayer arg0) {

nextSong();

}

});

mp.prepare();

new Thread(MainActivity.this).start();

sbmusic.setVisibility(ProgressBar.VISIBLE);

sbmusic.setProgress(0);

sbmusic.setMax(mp.getDuration());

int mmax = sbmusic.getMax();

int min = mmax / 60000;

int sec = (mmax % 60000) / 1000;

tvend.setText(min + " : " + sec);

mp.setOnPreparedListener(new OnPreparedListener() {

public void onPrepared(MediaPlayer mp) {

mp.start();

}

});

// 한 곡의 재생이 끝나면 다음 곡을 재생하도록 합니다.

} catch (IOException e) {

}

private void nextSong() {

if (++currentPosition >= positions.size()) {

// 마지막 곡이 끝나면, 재생할 곡을 초기화합니다.

currentPosition = 0;

} else {

// 다음 곡을 재생합니다.

playSong(MEDIA_PATH + positions.get(currentPosition));

}

});

}

public void updateSongList() {

//Music [] music = new Music[10];

File home = new File(MEDIA_PATH);

if (home.listFiles(new Mp3Filter()).length > 0) {

for (File file : home.listFiles(new Mp3Filter())) {

songs.add(file.getName());

}

ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,

R.layout.song_item, songs);

setListAdapter(adapter);

}

public void searupdateSongList() {

File home = new File(MEDIA_PATH);

search = new ArrayList<String>();

if (home.listFiles(new SearchFilter()).length > 0) {

for (File file : home.listFiles(new SearchFilter())) {

search.add(file.getName());

}

ArrayAdapter<String> arrayAdapter1 = new ArrayAdapter<String>(

getApplicationContext(), R.layout.sear_song_item, search);

searchlist.setAdapter(arrayAdapter1);

}

// List 占쏙옙占쏙옙占쏙옙占쏙옙 클占쏙옙占쏙옙占쏙옙 占쏙옙占쏙옙 event占쏙옙 처占쏙옙占쌌니댐옙.

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

currentPosition = position;

TextView tv = (TextView) l.getChildAt(position).findViewById(

R.id.song_item_layout);

refresh(tv.getText().toString());

}

void refresh(String str) {

positions.add(str);

ListView sellist = (ListView) findViewById(R.id.selectlist);

ArrayAdapter<String> arrada = new ArrayAdapter<String>(

getApplicationContext(), R.layout.select_item, positions);

sellist.setAdapter(arrada);

}

class SearchFilter implements FilenameFilter {

public boolean accept(File dir, String name) {

return (name.endsWith(searname + ".mp3"));

}

@Override

public void run() {

int current=0;

try {

Thread.sleep(500);

if(mp.isPlaying()) {

current = mp.getCurrentPosition();

sbmusic.setProgress(current);

int mmax = sbmusic.getMax();

int min = mmax / 60000;

int sec = (mmax % 60000) / 1000;

tvnow.setText(min + " : " + sec);

}

}catch(InterruptedException e) {

e.printStackTrace();

}

private void setView(SeekBar _sb, TextView _tv) {

tvnow = _tv;

sbmusic = _sb;

}

protected void onDestroy() {

if(mp != null) {

mp.release();

}

super.onDestroy();

}

private static final BitmapFactory.Options sBitmapOptionsCache = new BitmapFactory.Options();

private static final Uri sArtworkUri = Uri.parse("content://media/external/audio/albumart");

private void getArtworkQuick(Context context, int album_id, int w, int h) {

w -= 2;

h -= 2;

ContentResolver res = context.getContentResolver();

Uri uri = ContentUris.withAppendedId(sArtworkUri, album_id);

ImageView albumart = (ImageView)findViewById(R.id.imageView1);

albumart.setImageURI(uri);

/*if (uri != null) {

ParcelFileDescriptor fd = null;

try {

fd = res.openFileDescriptor(uri, "r");

int sampleSize = 1;

sBitmapOptionsCache.inJustDecodeBounds = true;

BitmapFactory.decodeFileDescriptor(

fd.getFileDescriptor(), null, sBitmapOptionsCache);

int nextWidth = sBitmapOptionsCache.outWidth >> 1;

int nextHeight = sBitmapOptionsCache.outHeight >> 1;

while (nextWidth>w && nextHeight>h) {

sampleSize <<= 1;

nextWidth >>= 1;

nextHeight >>= 1;

}

sBitmapOptionsCache.inSampleSize = sampleSize;

sBitmapOptionsCache.inJustDecodeBounds = false;

Bitmap b = BitmapFactory.decodeFileDescriptor(

fd.getFileDescriptor(), null, sBitmapOptionsCache);

if (b != null) {

// finally rescale to exactly the size we need

if (sBitmapOptionsCache.outWidth != w || sBitmapOptionsCache.outHeight != h) {

Bitmap tmp = Bitmap.createScaledBitmap(b, w, h, true);

b.recycle();

b = tmp;

}

return b;

} catch (FileNotFoundException e) {

} finally {

try {

if (fd != null)

fd.close();

} catch (IOException e) {

}

return null;*/

}

class Mp3Filter implements FilenameFilter {

public boolean accept(File dir, String name) {

return (name.endsWith(".mp3"));

}

class Music {

String artist;

String name;

String image;

public Music(String _artist, String _name, String _image) {

artist = _artist;

name = _name;

image = _image;

}

public String getArtist(){

return artist;

}

public String getName() {

return name;

}

public String getImage() {

return image;

}

로그캣입니다!

12-18 15:39:24.640: E/AndroidRuntime(11504): FATAL EXCEPTION: main

12-18 15:39:24.640: E/AndroidRuntime(11504): java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0

12-18 15:39:24.640: E/AndroidRuntime(11504): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)

12-18 15:39:24.640: E/AndroidRuntime(11504): at java.util.ArrayList.get(ArrayList.java:304)

12-18 15:39:24.640: E/AndroidRuntime(11504): at com.example.mp3player02.MainActivity$3.onItemClick(MainActivity.java:137)

12-18 15:39:24.640: E/AndroidRuntime(11504): at android.widget.AdapterView.performItemClick(AdapterView.java:292)

12-18 15:39:24.640: E/AndroidRuntime(11504): at android.widget.AbsListView.performItemClick(AbsListView.java:1058)

12-18 15:39:24.640: E/AndroidRuntime(11504): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2514)

12-18 15:39:24.640: E/AndroidRuntime(11504): at android.widget.AbsListView.onTouchEvent(AbsListView.java:3180)

12-18 15:39:24.640: E/AndroidRuntime(11504): at android.view.View.dispatchTouchEvent(View.java:5486)

12-18 15:39:24.640: E/AndroidRuntime(11504): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1953)

12-18 15:39:24.640: E/AndroidRuntime(11504): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1714)

12-18 15:39:24.640: E/AndroidRuntime(11504): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:1959)