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?package com.zhanglin.practice; //w ww. j a v a 2 s. c o m import java.io.File; import android.app.Activity; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.database.Cursor; import android.os.Bundle; import android.provider.MediaStore; import android.util.Log; import android.view.ContextMenu; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ContextMenu.ContextMenuInfo; import android.view.View.OnCreateContextMenuListener; import android.widget.AdapterView; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.AdapterView.OnItemClickListener; import android.widget.LinearLayout.LayoutParams; public class alb extends Activity { private Cursor c; private int[] _ids; private String[] _titles; private String[] _path; // ???????? private String[] _artists; private String[] _album; private long[] _duration; private ListView listview; private int pos; private String albumName; private MusicListAdapter adapter; /* ?????????? */ private static final int PLAY_ITEM=Menu.FIRST; private static final int DELETE_ITEM=Menu.FIRST+1; @Override protected void onCreate(Bundle savedInstanceState) { Log.i("test","AlbumActivity"); super.onCreate(savedInstanceState); Intent intent=this.getIntent(); albumName=intent.getExtras().getString("albums"); listview=new ListView(this); listview.setOnItemClickListener(new ListItemClickListener()); listview.setOnCreateContextMenuListener(new ContextMenuListener()); LinearLayout list=new LinearLayout(this); list.setBackgroundResource(R.drawable.background); LinearLayout.LayoutParams params=new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT); list.addView(listview,params); setContentView(list); } @Override protected void onStart() { // TODO Auto-generated method stub super.onStart(); setListData(); } /* ???????? */ private void playMusic(int position) { Intent intent=new Intent(alb.this,PlayingActivity.class); intent.putExtra("_ids",_ids); intent.putExtra("_titles",_titles); intent.putExtra("position",position); startActivity(intent); finish(); } /* ???????????? */ private void deleteMusic(int position) { this.getContentResolver().delete(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,MediaStore.Audio.Media._ID+"="+_ids[position],null); } /* ?sdcard????????? */ private void deleteMusicFile(int position) { File file=new File(_path[pos]); file.delete(); } class ListItemClickListener implements OnItemClickListener { @Override public void onItemClick(AdapterView<?> arg0,View view,int position,long id) { // TODO Auto-generated method stub //playMusic(position); for(int i=0;i<c.getCount();i++) { PublicList.list(_path[i],_titles[i],_artists[i],_album[i],_duration[i],i); } if(PublicList.currentItem==position&&PlayerServices.myMediaPlayer.isPlaying()==true) { Intent intent=new Intent(alb.this,PlayingActivity.class); startActivity(intent); } else { PublicList.currentItem=position; PlayerServices.playMusic(PublicList.path[PublicList.currentItem]); Intent intent=new Intent(alb.this,PlayingActivity.class); startActivity(intent); } } } /* ???????????????? */ class ContextMenuListener implements OnCreateContextMenuListener { @Override public void onCreateContextMenu(ContextMenu menu,View view,ContextMenuInfo info) { menu.setHeaderTitle("???"); menu.add(0,PLAY_ITEM,0,"??"); menu.add(0,DELETE_ITEM,0,"??"); final AdapterView.AdapterContextMenuInfo menuInfo=(AdapterView.AdapterContextMenuInfo)info; pos=menuInfo.position; } } /* ??????????????????????? */ @Override public boolean onContextItemSelected(MenuItem item) { switch(item.getItemId()) { case PLAY_ITEM: // ???? playMusic(pos); break; case DELETE_ITEM: // ?????? AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setMessage("?????????????").setPositiveButton("?",new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog,int which) { deleteMusic(pos); // ????????? deleteMusicFile(pos); // ?sdcard?????? setListData(); // ????????????????? adapter.notifyDataSetChanged(); // ????UI } }).setNegativeButton("???",null); AlertDialog ad=builder.create(); ad.show(); break; } return true; } private void setListData() { c=this.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,new String[] { MediaStore.Audio.Media.TITLE, MediaStore.Audio.Media.DURATION, MediaStore.Audio.Media.ARTIST, MediaStore.Audio.Media._ID, MediaStore.Audio.Media.DISPLAY_NAME, MediaStore.Audio.Media.DATA, MediaStore.Audio.Media.ALBUM }, MediaStore.Audio.Media.ALBUM+"='"+albumName+"'",null,null); c.moveToFirst(); _ids=new int[c.getCount()]; _titles=new String[c.getCount()]; _path=new String[c.getCount()]; _album=new String[c.getCount()]; _duration=new long[c.getCount()]; _artists=new String[c.getCount()]; for(int i=0;i<c.getCount();i++) { _ids[i]=c.getInt(3); _titles[i]=c.getString(0); _path[i]=c.getString(5); _album[i]=c.getString(6); _duration[i]=c.getLong(1); _artists[i]=c.getString(2); c.moveToNext(); } adapter=new MusicListAdapter(this,c); listview.setAdapter(adapter); } @Override public boolean onCreateOptionsMenu(Menu menu) { // TODO Auto-generated method stub 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 true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // TODO Auto-generated method stub switch(item.getItemId()) { case 1: //Toast.makeText(MainActivity.this,"????",Toast.LENGTH_LONG).show(); Intent intent1=new Intent(alb.this,PlayListActivity.class); startActivity(intent1); break; case 2: Intent playing=new Intent(); playing.setClass(alb.this,PlayingActivity.class); startActivity(playing); break; case 3: //Toast.makeText(MainActivity.this,"??",Toast.LENGTH_LONG).show(); Intent intent2=new Intent(alb.this,About.class); startActivity(intent2); break; case 4: finish(); break; default: break; } return true; } }