Music App

music_list.java

package com.example.android.truvp;

import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.media.Image;
import android.media.ImageReader;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.VideoView;

import java.io.File;
import java.util.ArrayList;

public class music_list extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_music_list);

        String currTitle ;
        String currentArtist;
        String currentDuration;

        //declare array for the list of music to display
        ArrayList<Music> musicList = new ArrayList<>();

        ContentResolver contentResolver = getContentResolver();
        Uri videoUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
        Cursor videoCursor = contentResolver.query(videoUri,null,null,null);
        if(videoCursor == null || videoCursor.moveToNext())
        {
            int videotitle = videoCursor.getColumnIndex(MediaStore.Video.Media.MINI_THUMB_MAGIC);
            int videoArtist = videoCursor.getColumnIndex(MediaStore.Video.Media.DATA);
            int videoDuration = videoCursor.getColumnIndex(MediaStore.Video.Media.DURATION);

            while(videoCursor.moveToNext()){
                currTitle = videoCursor.getString(videotitle);
                currentArtist = videoCursor.getString(videoArtist);
                currentDuration= videoCursor.getString(videoDuration);

                musicList.add(new Music(currTitle,currentArtist, currentDuration));
            }
            videoCursor.close();
        }

        MusicAdapter adapter = new MusicAdapter(this,musicList);

        //GridView gridview = (GridView)findViewById(R.id.gridview);
        ListView listView = (ListView)findViewById(R.id.list);
        //gridview.setAdapter(adapter);
        listView.setAdapter(adapter);



    }

}