如何从sd卡android获取所有音频文件
我想写一个类,从整个sd卡中获取所有mp3文件。但实际上,它只能直接将音频文件放在sd卡上。所以它不会通过子文件夹进行搜索。我想使用Mediastore,但我不会将它放到arraylist中。也许你能帮我,非常感谢,很抱歉,你犯了一个错误;)文茨如何从sd卡android获取所有音频文件,android,eclipse,audio,path,mediastore,Android,Eclipse,Audio,Path,Mediastore,我想写一个类,从整个sd卡中获取所有mp3文件。但实际上,它只能直接将音频文件放在sd卡上。所以它不会通过子文件夹进行搜索。我想使用Mediastore,但我不会将它放到arraylist中。也许你能帮我,非常感谢,很抱歉,你犯了一个错误;)文茨 导入java.io.File; 导入java.io.FilenameFilter; 导入java.util.ArrayList; 导入java.util.HashMap; 导入de.me.musicplayer.SongsManager.FileExt
导入java.io.File;
导入java.io.FilenameFilter;
导入java.util.ArrayList;
导入java.util.HashMap;
导入de.me.musicplayer.SongsManager.FileExtensionFilter;
导入android.database.Cursor;
导入android.net.Uri;
导入android.provider.MediaStore;
公共类歌曲管理器{
最终字符串媒体路径=新字符串(“/sdcard/”);
private ArrayList songsList=new ArrayList();
//建造师
公共歌曲管理器(){
}
/**
*从SD卡读取所有mp3文件的功能
*并将详细信息存储在ArrayList中
* */
公共阵列列表getPlayList(){
文件主目录=新文件(媒体路径);
if(home.listFiles(新文件扩展筛选器()).length>0){
对于(文件:home.listFiles(新的FileExtensionFilter())){
HashMap宋=新HashMap();
song.put(“songTitle”,file.getName().substring(0,(file.getName().length()-4));
put(“songPath”,file.getPath());
//将每首歌曲添加到歌曲列表
歌曲列表。添加(歌曲);
}
}
//返回歌曲列表数组
返回歌曲列表;
}
/**
*类来筛选扩展名为.mp3的文件
* */
类FileExtensionFilter实现FilenameFilter{
公共布尔接受(文件目录,字符串名称){
return(name.endsWith(“.mp3”)| name.endsWith(“.mp3”);
}
}
}
final String MEDIA\u PATH=Environment.getExternalStorageDirectory()
.getPath()+“/”;
private ArrayList songsList=new ArrayList();
私有字符串mp3Pattern=“.mp3”;
//建造师
公共歌曲管理器(){
}
/**
*函数读取所有mp3文件并将详细信息存储在
*ArrayList
* */
公共阵列列表getPlayList(){
System.out.println(媒体路径);
如果(媒体路径!=null){
文件主目录=新文件(媒体路径);
File[]listFiles=home.listFiles();
if(listFiles!=null&&listFiles.length>0){
用于(文件:listFiles){
System.out.println(file.getAbsolutePath());
if(file.isDirectory()){
董事会(档案);
}否则{
addSongToList(文件);
}
}
}
}
//返回歌曲列表数组
返回歌曲列表;
}
专用void扫描目录(文件目录){
if(目录!=null){
File[]listFiles=directory.listFiles();
if(listFiles!=null&&listFiles.length>0){
用于(文件:listFiles){
if(file.isDirectory()){
董事会(档案);
}否则{
addSongToList(文件);
}
}
}
}
}
私有void addSongToList(文件歌曲){
if(song.getName().endsWith(mp3Pattern)){
HashMap songMap=新HashMap();
songMap.put(“songTitle”,
song.getName().substring(0,(song.getName().length()-4));
songMap.put(“songPath”,song.getPath());
//将每首歌曲添加到歌曲列表
歌曲列表。添加(歌曲地图);
}
}
此代码将为您提供哈希映射的数组列表,其中包含歌曲标题以及歌曲绝对路径
public ArrayList<HashMap<String, String>> getAudioList() {
ArrayList<HashMap<String, String>> mSongsList = new ArrayList<HashMap<String, String>>();
Cursor mCursor = getContentResolver().query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Audio.Media.DISPLAY_NAME,
MediaStore.Audio.Media.DATA }, null, null, null);
int count = mCursor.getCount();
System.out.println("total no of songs are=" + count);
HashMap<String, String> songMap;
while (mCursor.moveToNext()) {
songMap = new HashMap<String, String>();
songMap.put("songTitle",mCursor.getString(mCursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME)));
songMap.put("songPath", mCursor.getString(mCursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA)));
mSongsList.add(songMap);
}
mCursor.close();
return mSongsList;
}
public ArrayList getAudioList(){
ArrayList mSongsList=新的ArrayList();
游标mCursor=getContentResolver().query(
MediaStore.Audio.Media.EXTERNAL\u CONTENT\u URI,
新字符串[]{MediaStore.Audio.Media.DISPLAY_NAME,
MediaStore.Audio.Media.DATA},null,null,null);
int count=mCursor.getCount();
System.out.println(“歌曲总数=”+count);
HashMap-songMap;
while(mCursor.moveToNext()){
songMap=新的HashMap();
songMap.put(“songTitle”),mCursor.getString(mCursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME));
songMap.put(“songPath”),mCursor.getString(mCursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA));
mSongsList.add(歌曲地图);
}
mCursor.close();
返回mSongsList;
}
您还可以使用ContentResolver类获取
我这样做过,效果很好
public void getSongListFromStorage() {
//retrieve song info
ContentResolver musicResolver = getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor musicCursor = musicResolver.query(musicUri, null, null, null, null);
if (musicCursor != null && musicCursor.moveToFirst()) {
//get columns
int titleColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.TITLE);
int idColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media._ID);
int artistColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.ARTIST);
//add songs to list
do {
long thisId = musicCursor.getLong(idColumn);
String thisTitle = musicCursor.getString(titleColumn);
String thisArtist = musicCursor.getString(artistColumn);
songList.add(new Song(thisId, thisTitle, thisArtist));
} while (musicCursor.moveToNext());
}
}
请参阅此链接。。在hashmap上完美地获得所有歌曲列表和arraylist列表,谢谢兄弟..Njoy。。。!!!!非常棒的代码,可以找到任何扩展为“.xlsx”的文件列表。
private void getallaudio()
{
String[] STAR = { "*" };
controller.audioWrapper.clear();
Cursor audioCursor = ((Activity) cntx).managedQuery(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, STAR, null, null, null);
if (audioCursor != null)
{
if (audioCursor.moveToFirst())
{
do
{
String path = audioCursor.getString(audioCursor.getColumnIndex(MediaStore.Audio.Media.DATA));
audioWrapper.add(new MediaWrapper(new File(path).getName(), path, "Audio",false));
// Log.i("Audio Path",path);
}while (audioCursor.moveToNext());
}
// audioCursor.close();
}
}
public ArrayList<HashMap<String, String>> getAudioList() {
ArrayList<HashMap<String, String>> mSongsList = new ArrayList<HashMap<String, String>>();
Cursor mCursor = getContentResolver().query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
new String[] { MediaStore.Audio.Media.DISPLAY_NAME,
MediaStore.Audio.Media.DATA }, null, null, null);
int count = mCursor.getCount();
System.out.println("total no of songs are=" + count);
HashMap<String, String> songMap;
while (mCursor.moveToNext()) {
songMap = new HashMap<String, String>();
songMap.put("songTitle",mCursor.getString(mCursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME)));
songMap.put("songPath", mCursor.getString(mCursor
.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA)));
mSongsList.add(songMap);
}
mCursor.close();
return mSongsList;
}
public void getSongListFromStorage() {
//retrieve song info
ContentResolver musicResolver = getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor musicCursor = musicResolver.query(musicUri, null, null, null, null);
if (musicCursor != null && musicCursor.moveToFirst()) {
//get columns
int titleColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.TITLE);
int idColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media._ID);
int artistColumn = musicCursor.getColumnIndex
(android.provider.MediaStore.Audio.Media.ARTIST);
//add songs to list
do {
long thisId = musicCursor.getLong(idColumn);
String thisTitle = musicCursor.getString(titleColumn);
String thisArtist = musicCursor.getString(artistColumn);
songList.add(new Song(thisId, thisTitle, thisArtist));
} while (musicCursor.moveToNext());
}
}