How To Get Audio Files From The Internal Storage In Android
In this blog post we will use MediaStore.Audio class to reterive our audio files from android device.
MediaStore.Audio is works like a container. It contains all the audio files from internal and external storage.
We will follow some basic steps to retrieve audio files-
Get all the audio file from MediaStore.
Add all the retrieved files in a List.
Display the List.
1- Get Audio Files
We will use MediaStore.Audio file to retrieve the audio files from storage(internal or external).
First we have to spacify what are the contents we are going to retrieve, for that we will create an array of projections we need.
Here is the code flick for that-
String proj = {MediaStore.Audio.Media._ID,
MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media.ARTIST,
MediaStore.Audio.Media.DURATION,
MediaStore.Audio.Media.DATA,
MediaStore.Audio.Media.ALBUM,
MediaStore.Audio.Media.ALBUM_ID
};
Ok, we know what content we need, now set the projection and make a query for data, for that purpose we will use Cursor interface.
Cursor is very useful when you are retrieving some data from storage. It provides read-write access tothe result set return by a query.
Here is the code flick for that-
Cursor audioCursor = context.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, proj, selection, null, sortOrder);
2- Add result-set into a List
We have all the data access using above query . Now add that data into a list.
Here is the code flick for that-
if (audioCursor != null) {
if (audioCursor.moveToFirst()) {
do {
int audioTitle = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE);
int audioartist = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST);
int audioduration = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION);
int audiodata = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
int audioalbum = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM);
int audioalbumid = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM_ID);
int song_id = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media._ID);
Songfileinfo info = new Songfileinfo();
info.setFile_uri(audioCursor.getString(audiodata));
info.setTitle(audioCursor.getString(audioTitle));
info.setDuration((audioCursor.getString(audioduration)));
info.setArtist(audioCursor.getString(audioartist));
info.setAlbum(audioCursor.getString(audioalbum));
info.setId(audioCursor.getLong(song_id));
info.setAlbum_art((ContentUris.withAppendedId(albumArtUri, audioCursor.getLong(audioalbumid))).toString());
songList.add(info);
} while (audioCursor.moveToNext());
}
}
To get the album art we need to add
final Uri albumArtUri = Uri.parse(“content://media/external/audio/albumart”);
Here is the complete code of the class
public class Songdata {
private ArrayList songList = new ArrayList();
final Uri albumArtUri = Uri.parse(“content://media/external/audio/albumart”);
public ArrayList getPlayList(Context context) {
{
try {
String proj = {MediaStore.Audio.Media._ID,
MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media.ARTIST,
MediaStore.Audio.Media.DURATION,
MediaStore.Audio.Media.DATA,
MediaStore.Audio.Media.ALBUM,
MediaStore.Audio.Media.ALBUM_ID
};
Cursor audioCursor = context.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, proj, selection, selectionArgs, null);
if (audioCursor != null) {
if (audioCursor.moveToFirst()) {
do {
int audioTitle = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE);
int audioartist = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST);
int audioduration = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION);
int audiodata = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA);
int audioalbum = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM);
int audioalbumid = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM_ID);
int song_id = audioCursor.getColumnIndexOrThrow(MediaStore.Audio.Media._ID);
Songfileinfo info = new Songfileinfo();
info.setFile_uri(audioCursor.getString(audiodata));
info.setTitle(audioCursor.getString(audioTitle));
info.setDuration((audioCursor.getString(audioduration)));
info.setArtist(audioCursor.getString(audioartist));
info.setAlbum(audioCursor.getString(audioalbum));
info.setId(audioCursor.getLong(song_id));
info.setAlbum_art((ContentUris.withAppendedId(albumArtUri, audioCursor.getLong(audioalbumid))).toString());
songList.add(info);
} while (audioCursor.moveToNext());
}
}
assert audioCursor != null;
audioCursor.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return songList;
}
}
Here is the songfileinfo class
public class Songfileinfo {
private String title, album, artist, file_uri;
private String album_art, duration;
public long id = 0;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public Songfileinfo(Parcel in) {
title = in.readString();
album = in.readString();
artist = in.readString();
file_uri = in.readString();
album_art = in.readString();
id = in.readLong();
}
public String getDuration() {
return duration;
}
public void setDuration(String duration) {
this.duration = duration;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getAlbum() {
return album;
}
public void setAlbum(String album) {
this.album = album;
}
public String getArtist() {
return artist;
}
public void setArtist(String artist) {
this.artist = artist;
}
public String getFile_uri() {
return file_uri;
}
public void setFile_uri(String file_uri) {
this.file_uri = file_uri;
}
public String getAlbum_art() {
return album_art;
}
public void setAlbum_art(String album_art) {
this.album_art = album_art;
}
}
3- Display List
Now its the time to display all the data into a View. For that we have to create a ListView in the layout and then create an Adapter to bridg between View and program part.
Here is the code flick for that-
ListView listView = (ListView) findViewById(R.id.list);
ArrayAdapter arrayAdapter = new CustomeAdapter(this, audioList);
listView.setAdapter(arrayAdapter);
Here is how to call the class
public class MainActivity extends AppCompatActivity {
private ArrayList audioList = new ArrayList();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
External();
ListView listView = (ListView) findViewById(R.id.list);
ArrayAdapter arrayAdapter = new CustomeAdapter(this, audioList);
listView.setAdapter(arrayAdapter);
}
public void External() {
Songdata load = new Songdata();
this.audioList = load.getPlayList(this);
}
}
Here is the custom adapter
public class CustomAdapter extends ArrayAdapter {
private final Typeface typeface;
public Customadapter(Context context, int custom_album_child, ArrayList albumarr) {
super(context, custom_album_child, albumarr);
typeface = Typeface.createFromAsset(context.getAssets(), “font.ttf”);
}
@NonNull
@Override
public View getView(int position, View convertView, @NonNull ViewGroup parent) {
View view = convertView;
LayoutInflater layoutInflater = LayoutInflater.from(getContext());
if (convertView == null) {
view = layoutInflater.inflate(R.layout.custom_album_child, parent, false);
}
Songfileinfo songfileinfo = (Songfileinfo) getItem(position);
TextView textView = (TextView)view.findViewById(R.id.textView12);
TextView textView1 = (TextView)view.findViewById(R.id.albumchild_sub);
TextView textView2 = (TextView)view.findViewById(R.id.albumchild_sub1);
if (songfileinfo != null) {
textView.setText(songfileinfo.getTitle());
textView.setTypeface(typeface);
}
if (songfileinfo != null) {
textView1.setText(songfileinfo.getArtist());
textView1.setTypeface(typeface);
}
long timer = 0;
if (songfileinfo != null) {
timer = Long.parseLong(songfileinfo.getDuration());
textView2.setText(“”+milliSecondsToTimer(timer));
textView2.setTypeface(typeface);
}
return view;
}
public String milliSecondsToTimer(long milliseconds) {
String finalTimerString = “”;
String secondsString = “”;
// Convert total duration into time
int hours = (int) (milliseconds / (1000 * 60 * 60));
int minutes = (int) (milliseconds % (1000 * 60 * 60)) / (1000 * 60);
int seconds = (int) ((milliseconds % (1000 * 60 * 60)) % (1000 * 60) / 1000);
// Add hours if there
if (hours > 0) {
finalTimerString = hours + “:”;
}
// Prepending 0 to seconds if it is one digit
if (seconds < 10) {
secondsString = “0” + seconds;
} else {
secondsString = “” + seconds;
}
finalTimerString = finalTimerString + minutes + “:” + secondsString;
// return timer string
return finalTimerString;
}
}
