android - Play mp3 with continues from some mp3, pause and stop? -



i have mp3 files inside android internal folder.
i want add feature continues, play, pause, , stop code run under still less able work well, there 1 can give solution

play_murotal class

    public play_murotal(context context, listview listview, string nama_surat, long id_surat) {         this.context = context;         this.nama_surat = nama_surat;         this.listview = listview;         this.id_surat = id_surat;     }      public mediaplayer play_murotal_ayat() {          final string dir_file = context.getfilesdir() + "/" + nama_surat;         file root = new file(dir_file);         final file[] files = root.listfiles();          // delay time play mp3         handler handler = new handler();         final list<integer> listdurasi = new arraylist<integer>();          (int = 0; < files.length; a++) {             final string nama_file = files[a].getname();              // durasi total             int durasi = get_duration_murotal(dir_file + "/" + nama_file);             listdurasi.add(durasi);             int durasitotal = 0;             (int b = 0; b < listdurasi.size(); b++) {                 if (b == 0) {                     durasitotal = 0;                 } else {                     durasitotal += listdurasi.get(b);                 }             }              final int finala = a;             handler.postdelayed(new runnable() {                 @requiresapi(api = build.version_codes.kitkat)                 @override                 public void run() {                     listview.setselection(finala - 1);                     play(dir_file,nama_file);                 }             }, durasitotal);         }             return mplayer;     }      public void play(string dir_file, string nama_file){         this.mplayer = mediaplayer.create(context, uri.parse(dir_file + "/" + nama_file));         this.mplayer.start();     }     public void pause(){         mplayer.pause();     }


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