BaseAdapter: getView() problem

[june park]

Hello everyone,

I made a listview that has three textviews and a checkbox and put it into a BaseAdapter. What it has to do is if an item is at the 'unread' status, then make its textviews BOLD. However, I encountered two problems.

1. the top item is always BOLD no matter it is read or unread.
2. If I do scrolling, then items reloaded by scrolling start to be bold

I researched about it but couldn't find any good things for me. If anyone has an idea, would you please help me? Below is my getView().

public View getView(final int position, View convertView, ViewGroup parent) {
			View view = convertView;
			ViewHolder viewHolder;

			if(convertView == null){ // check if convertView exists
				// get and inflate layout
				view = layoutInflater.inflate(R.layout.row, null);
				
				viewHolder = new ViewHolder();
				viewHolder.tv1 = (TextView)view.findViewById(R.id.list_callerIDname);
				viewHolder.tv2 = (TextView)view.findViewById(R.id.list_callerIDnumber);
				viewHolder.tv3 = (TextView)view.findViewById(R.id.list_messageSentTime);
				viewHolder.cb = (CheckBox)view.findViewById(R.id.checkBox1);
								
				// get each CheckBox into cb_array for future use
				this.cb_array[position] = (CheckBox)view.findViewById(R.id.checkBox1);

				// use it as a tag
				view.setTag(viewHolder);
			}
			else{
				viewHolder = (ViewHolder)view.getTag();
			}

			viewHolder.tv1.setText(this.callerIDnames[position]);
			viewHolder.tv2.setText(this.callerIDnumbers[position]);
			viewHolder.tv3.setText(this.messageSentTimes[position]);
			
			// if message is unread, then make texts bold
			if (messageRead_list[position] == false){
				viewHolder.tv1.setTypeface(viewHolder.tv1.getTypeface(), Typeface.BOLD);
				viewHolder.tv2.setTypeface(viewHolder.tv2.getTypeface(), Typeface.BOLD);
				viewHolder.tv3.setTypeface(viewHolder.tv3.getTypeface(), Typeface.BOLD);
			}
			else{
				viewHolder.tv1.setTypeface(viewHolder.tv1.getTypeface(), Typeface.NORMAL);
				viewHolder.tv2.setTypeface(viewHolder.tv2.getTypeface(), Typeface.NORMAL);
				viewHolder.tv3.setTypeface(viewHolder.tv3.getTypeface(), Typeface.NORMAL);				
			}
		
			return view;
		}