Listview style Each Row

问题

this is the code in my custom adapter (THE CODE IN BROWN COLOR) when initially list is build proper margin is applied to valid items when i scroll down and again scroll up all the rows in list shifts the margin left by 20 what i'm doing wrong please reply soon

@Override
    public View getView(final int position, View convertView, ViewGroup parent) {

        final ViewHolder holder;
        // getting data
        final ViewMovieDetailsModel_ViewComments movies = getItem(position);

        if (convertView == null) 
        {
            convertView = View.inflate(context, R.layout.comment_row, null);                
            holder = new ViewHolder();

            //getting handles

            holder.comments_linearLayout = (LinearLayout) convertView.findViewById(R.id.comments_linearLayout);
            holder.commenter_textView = (TextView) convertView.findViewById(R.id.comment_row_commenter);
            holder.commented_on_textView = (TextView) convertView.findViewById(R.id.comment_row_comment_time);
            holder.comment_text_textView = (TextView) convertView.findViewById(R.id.comment_row_comment_text);
            holder.reply_button = (Button) convertView.findViewById(R.id.comment_row_reply_button);

            convertView.setTag(holder);
        }
        else
        {
            holder = (ViewHolder)convertView.getTag();
        }

        if (movies != null) 
        {
            if (((movies.getParent_comment_id()).toString().equals("null")) && session.isLoggedIn()==true) {
                holder.reply_button.setVisibility(View.VISIBLE);
            }else{
                holder.reply_button.setVisibility(View.INVISIBLE);
            }


`if (!((movies.getParent_comment_id()).toString().equals("null"))) 
{

LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
                    params.setMargins(20, 0, 0, 0);
                    holder.comments_linearLayout.setLayoutParams(params);
}`


            holder.commenter_textView.setText(movies.getUsername_commentor());

            holder.commenter_textView.setTag(movies.getUser_id_commentor());

        return convertView;
    }

回答1:

because you are setting margins (the brown font) in 'if' statement:

if (movies != null)

just take it out of this if block (for example put it just before the return point)

Right now this code is probably not executed at the first view load, since the movie is null. When the getView is called second time, the movie is not null, and the marigin is set according to your 'brown' code.

if this is not the solution - maybe the inside if statement condition is not true (the one that is in first 'brown' row). so.. your own logic prevents the marigins to be set as you want :)

Please let me know if it helps.

回答2:

One way you could go about solving this problem is instead of using LayoutParams.setMargins(20, 0, 0, 0), you could create an empty TextView whose width is 20 dp by default and whose position will be to the left of your rows contents. It will be View.GONE by default, but when if (!((movies.getParent_comment_id()).toString().equals("null"))) happens, you can set that to View.VISIBLE

来源：https://stackoverflow.com/questions/17380439/listview-style-each-row