Shulou(Shulou.com)06/03 Report--

This article mainly introduces how to read all the music in the memory of the mobile phone by Android, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.

To read the music information in the phone's memory, you need to do the following steps:

1) create a XML file, store the obtained information, and use the ListView control

2) create a new XML file to lay out the item objects in LIstView

3) you need to create a Music class to store the main information of the Music you need to obtain.

4) you need to create a help class to get the music information on the phone, and pass the information through a collection class.

5) create a custom adapter to load each child Item of ListView

6) load the data and return to the user interface

The main code implementation is as follows:

1. Helper module

Public ArrayList getMusic (Context context) {arrayList = new ArrayList (); resolver = context.getContentResolver (); cursor = resolver.query (MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, null, MediaStore.Audio.Media.DEFAULT_SORT_ORDER); if (cursor! = null) {while (cursor.moveToNext ()) {musicInfo = new MusicInfo (); musicInfo.setSinger_Name (cursor.getString (cursor. GetColumnIndex (MediaStore.Audio.Media.ARTIST) / / singer name musicInfo.setSong_Name (cursor.getString (cursor. GetColumnIndex (MediaStore.Audio.Media.TITLE); / / song name musicInfo.setSong_size (FormatChange.formatSize (cursor.getInt (cursor. GetColumnIndex (MediaStore.Audio.Media.SIZE); / / size of the song musicInfo.setSong_ time (FormatChange.toTime (cursor. GetColumnIndexOrThrow (MediaStore.Audio.Media.DURATION) / / Song time musicInfo.setUrl (cursor.getString (cursor .getColumnIndex (MediaStore.Audio.Media.DATA)); arrayList.add (musicInfo);}} cursor.close (); return arrayList;}

I do it in a normal way, or I can use a static implementation.

II. Adapter module

Private ArrayList arrayList; private Context context; private TextView music_singer,music_name,music_size; private MusicInfo musicInfo; public Music_adapter (Context context,ArrayList arrayList) {this.context=context; this.arrayList=arrayList;} @ Override public int getCount () {return arrayList.size ();} @ Override public Object getItem (int position) {return arrayList.get (position);} @ Override public long getItemId (int id) {return id } @ Override public View getView (int position, View view, ViewGroup arg2) {if (view==null) {view=LayoutInflater.from (context) .comparate (R.layout.musicFormlNull);} music_name= (TextView) view.findViewById (R.id.music_name); music_singer= (TextView) view.findViewById (R.id.music_singer); music_size= (TextView) view.findViewById (R.id.music_size); musicInfo= (MusicInfo) arrayList.get (position) Music_name.setText (musicInfo.getSong_Name ()); music_singer.setText (musicInfo.getSinger_Name () + "|" + musicInfo.getSong_time ()); music_size.setText (musicInfo.getSong_size ()); / / you must convert return view to string type here. } Thank you for reading this article carefully. I hope the article "how to read all the music in the memory of your mobile phone" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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