android音樂播放器(2)

自定義Notify發送通知，並進行更新，顯示播放進度；自定義menu菜單，設置響應事件

//更新通知
 private void updateNotify(){
  Runnable r=new Runnable() {
   @Override
   public void run() {
    if(isStop){
     return;
    }
    SongInfo songInfo=mSongInfos.get(mCurrentIndex);
    //設置專輯信息
    mNotify.contentView.setTextViewText(R.id.notify_album_name, mAlbumName);
    mNotify.contentView.setTextViewText(R.id.notify_song_name, songInfo.getSongName());
    //獲取歌曲長度
    String duration=CommonUtil.convertTime(songInfo.getDuration());
    //獲取當前播放時間
    String currentTime=CommonUtil.convertTime(mMediaPlayer.getCurrentPosition()/1000);
    mNotify.contentView.setTextViewText(R.id.notify_current_time,currentTime);
    mNotify.contentView.setTextViewText(R.id.notify_duration, duration);

    mManager.notify(R.layout.play_notify,mNotify);
    mHandler.postDelayed(this, 1000);
   }
  };
  mHandler.postDelayed(r, 1000);
 }
 //通知
 public void showNotify(){
  mNotify = new Notification(R.drawable.no_cd,"正在播放",System.currentTimeMillis());
  //
  mNotify.flags|=Notification.FLAG_ONGOING_EVENT;
  //佈局，getPackage()上下文方法
  mNotify.contentView=new RemoteViews(getPackageName(),R.layout.play_notify);
  //通知的圖片不用實時刷新，不然在31秒處會出現異常
  mNotify.contentView.setImageViewBitmap(R.id.notify_album_icon, mAlbumBitmap);
  //
  Intent intent=new Intent(this,PlayActivity1.class);
  mNotify.contentIntent=PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
  mManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
  //發送通知
  startForeground(R.layout.play_notify, mNotify);
 }

---

// 自定義菜單
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {

  View parent = findViewById(R.id.home);
  Log.d("mPopupWindow", parent.toString());
  if (mPopupWindow.isShowing()) {
   mPopupWindow.dismiss();
  } else {
   mPopupWindow.showAtLocation(parent, Gravity.BOTTOM, 0, 0);
  }
  return false;
 }
@Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
  if (keyCode == KeyEvent.KEYCODE_BACK) {
   if (mPopupWindow.isShowing()) {
    mPopupWindow.dismiss();
    return true;
   }
  }
  return super.onKeyDown(keyCode, event);
 }