Listview复用出现问题

[raychongzi]

listview每个item里面有个下载进度条，比如第一个item点了下载，此时进入了下载，然后我划上去再划回来，第一个item又变回没下载的状态了，我也试过给position监听，可是还是如此，请问怎么解决

public View getView(final int position, View convertView, ViewGroup parent) {
		// TODO Auto-generated method stub
		final ViewHolder viewHolder;
		final Item item = list.get(position);
		if (convertView == null) {
			convertView = inflater.inflate(R.layout.item_songslistview, null);
			viewHolder = new ViewHolder();
			viewHolder.nameTextView = (TextView) convertView
					.findViewById(R.id.txt_name);
			
			viewHolder.ImageView = (RoundedRectangleImageView) convertView
					.findViewById(R.id.img_logo);
			viewHolder.DownloadBtn = (Button) convertView.findViewById(R.id.DownloadBtn);
			viewHolder.DownloadFinishBtn = (Button) convertView.findViewById(R.id.DownloadFinishBtn);
			viewHolder.DownloadPauseBtn = (Button) convertView.findViewById(R.id.DownloadPauseBtn);
			viewHolder.DownloadingBtn = (RoundProgressBar)convertView.findViewById(R.id.DownloadingBtn);
			convertView.setTag(viewHolder);
		} else {
			viewHolder = (ViewHolder) convertView.getTag();
		}
		Picasso.with(context).load(item.getLogo()).into(viewHolder.ImageView);
		
		viewHolder.DownloadBtn.setOnClickListener(new downloadClicklis(position,convertView));
		viewHolder.DownloadPauseBtn.setOnClickListener(new downloadPauseClicklis(position,convertView));
		
		return convertView;
	}
class downloadClicklis implements OnClickListener {
		 
        private int position;
        View convertview;
        public downloadClicklis(int pos,View cv) {
            position = pos;
            convertview=cv;
        }
 
        @Override
        public void onClick(View v) {
        	final SongItem item = list.get(position);
        	ViewHolder viewHolder = (ViewHolder) convertview.getTag();
        	Toast.makeText(context, position+"", Toast.LENGTH_SHORT).show();
			// TODO Auto-generated method stub
			//仅在wifi下载功能提醒
			boolean downloadWifi = TuxiaobeiApplication.tuxiaobeiSetting.isDownloadWifi();
			if(Helper.isNetworkAvailable(context)){					
				if(downloadWifi && Helper.is3G(context)){
					//正在使用3G网络，没有设置无wifi使用流量下载漫画时，则提醒
			    	final AlertDialog downloadWifiDialog = new AlertDialog.Builder(context).create();
			    	downloadWifiDialog.show();
			    	downloadWifiDialog.setCanceledOnTouchOutside(false);
					Window window = downloadWifiDialog.getWindow();
					window.setContentView(R.layout.download_wifi_dialog);
					RelativeLayout cancelLayout = (RelativeLayout) window.findViewById(R.id.id_cancel_ly);
					RelativeLayout closeLayout = (RelativeLayout) window.findViewById(R.id.id_close_ly);
					cancelLayout.setOnClickListener(new View.OnClickListener() {
						@Override
						public void onClick(View v) {
							// TODO Auto-generated method stub
							downloadWifiDialog.dismiss();
						}			
					});
					closeLayout.setOnClickListener(new View.OnClickListener() {

						@Override
						public void onClick(View v) {
							// TODO Auto-generated method stub
							downloadWifiDialog.dismiss();
						        Application.Setting.setDownloadWifi(false);
						}
						
					});
					return;
				}
				
				DownloadItem downloadItem = mDatabaseManager.getDownloadItem(item.getId());
				if(downloadItem != null && downloadItem.getStatus() == DownloadState.STATE_PAUSE){
					Toast.makeText(context, item.geturl(), Toast.LENGTH_SHORT).show();
					downloadItem.setDownloadUrl(item.geturl());
					downloadPauseAndResume(downloadItem,position);
				}else{
					download(item,position);
				}
				Helper.hideView(viewHolder.DownloadBtn);
				Helper.showView(viewHolder.DownloadPauseBtn);
			}else{
				//showLongToast(R.string.network_noconnect);
				Helper.showNoNetworkDialog(context);
			}					
        }
    }

[jklwan]

Item中保存下载状态，下载进度，getview时重新设置下载状态和进度。

[寒冰大神]

list.get(position) 中 保存下载状态，下载进度，