Android Open Source - 5th Play List Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

?package com.zhanglin.practice;
/*from   w ww . j  av a 2  s .c o m*/
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Intent;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class PlayListActivity extends Activity
{
  private ListView mListView;
  private MyAdapter mMyAdapter;
  
  private String[] _titles;
  private String[] _path; // ????????
  private String[] _artists;
  private String[] _album;
  private long[] _duration;
  private Cursor c;
  private AlertDialog ad=null;
  private AlertDialog.Builder builder=null;

  @Override
  protected void onCreate(Bundle savedInstanceState)
  {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.playlist);
  }
  @Override
  protected void onStart()
  {
    // TODO Auto-generated method stub
    super.onStart();
    setListData();
    setupViews();
  }

  public void setupViews()
  {
    mMyAdapter=new MyAdapter();
    mListView=(ListView)findViewById(R.id.listview_playlist);
    mListView.setAdapter(mMyAdapter);
    mListView.setOnItemClickListener(new OnItemClickListener()
    {

      @Override
      public void onItemClick(AdapterView<?> arg0,View arg1,int arg2,long arg3)
      {
        // TODO Auto-generated method stub
        for(int i=0;i<c.getCount();i++)
        {
          PublicList.list(_path[i],_titles[i],_artists[i],_album[i],_duration[i],i);
        }
        if(PublicList.currentItem==(int)arg3&&PlayerServices.myMediaPlayer.isPlaying()==true)
        {
          Intent intent=new Intent(PlayListActivity.this,PlayingActivity.class);
          startActivity(intent);
        }
        else 
        {
          PublicList.currentItem=(int)arg3;
          PlayerServices.playMusic(PublicList.path[PublicList.currentItem]);
          Intent intent=new Intent(PlayListActivity.this,PlayingActivity.class);
          startActivity(intent);
        }  
      }
    });
  }
  // ?????????,???getCount?getView??
  private class MyAdapter extends BaseAdapter
  {
    @Override
    public int getCount()
    {
      return c.getCount();
    }

    @Override
    public Object getItem(int arg0)
    {
      return arg0;
    }

    @Override
    public long getItemId(int position)
    {
      return position;
    }

    @Override
    public View getView(int position,View convertView,ViewGroup parent)
    {
      convertView=LayoutInflater.from(getApplicationContext()).inflate(R.layout.musicitem,null);

      TextView mTextView=(TextView)convertView.findViewById(R.id.musicitem_textView);
      ImageView imageView=(ImageView)convertView.findViewById(R.id.musicitem_imageView);
      TextView duration=(TextView)convertView.findViewById(R.id.musicitem_duration);
      TextView artTextView=(TextView)convertView.findViewById(R.id.musicitem_textView2);
      artTextView.setText(_artists[position]);
      mTextView.setText(_titles[position]);
      formatTime totime=new formatTime();
      duration.setText(totime.formatTime(_duration[position]));
      if(PlayerServices.myMediaPlayer.isPlaying()==true)
      {
        if(_titles[position].equalsIgnoreCase(PublicList.title[PublicList.currentItem]))
        {
          imageView.setImageResource(R.drawable.isplaying);
        }
      }
      mTextView.setTextColor(Color.WHITE);
      return convertView;
    }

  }
  private void setListData()
  {
    DataBase dataBase=new DataBase(PlayListActivity.this,"Player_db");
    SQLiteDatabase db=dataBase.getWritableDatabase();
    c=db.query("music",null,null,null,null,null,null);
    if(c==null||c.getCount()==0)
    {
      builder=new AlertDialog.Builder(this);
      builder.setMessage("??????...").setPositiveButton("??",null);
      ad=builder.create();
      ad.show();
    }
    c.moveToFirst();
    _titles=new String[c.getCount()];
    _artists=new String[c.getCount()];
    _path=new String[c.getCount()];
    _duration=new long[c.getCount()];
    _album=new String[c.getCount()];
    for(int i=0;i<c.getCount();i++)
    {
      _path[i]=c.getString(c.getColumnIndex("path"));
      _titles[i]=c.getString(c.getColumnIndex("title"));
      _artists[i]=c.getString(c.getColumnIndex("artist"));
      _album[i]=c.getString(c.getColumnIndex("album"));
      _duration[i]=c.getLong(c.getColumnIndex("duration"));
      c.moveToNext();
    }
  }
  @Override
  public boolean onCreateOptionsMenu(Menu menu)
  {
    // TODO Auto-generated method stub
    // mainMenu=menu;
    menu.add(0,1,Menu.NONE,"?????");
    menu.add(0,2,Menu.NONE,"????");
    menu.add(0,3,Menu.NONE,"??");
    menu.add(0,4,Menu.NONE,"??");
    // return super.onCreateOptionsMenu(menu);
    return true;
  }
  @Override
  public boolean onOptionsItemSelected(MenuItem item)
  {
    // TODO Auto-generated method stub
    switch(item.getItemId())
    {
    case 1:
      Toast.makeText(PlayListActivity.this,"???????????",Toast.LENGTH_LONG).show();
      break;
    case 2:
      Intent playing=new Intent();
      playing.setClass(PlayListActivity.this,PlayingActivity.class);
      startActivity(playing);
      break;
    case 3:
      Intent aboutIntent=new Intent(PlayListActivity.this,About.class);
      startActivity(aboutIntent);
      break;
    case 4:
      finish();
      break;
    default:
      break;
    }
    return true;
  }
}

Java Source Code List

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