How to change the color background of ONE item of listView

Question

I want to change the color background of only one item of the listView, I currently have this:

final ArrayAdapter<String> adapter = new ArrayAdapter<String>(parentActivity, android.R.layout.simple_list_item_1, accountList) {


      @Override
     public View getView(int position, View convertView, ViewGroup parent) {
         View view = super.getView(position, convertView, parent);
              ViewGroup.LayoutParams params = view.getLayoutParams();
              view.setLayoutParams(params);

              TextView textview = (TextView) view;
              textview.setTextSize(15);
              textview.setGravity(Gravity.CENTER);
              textview.setTextColor(Color.WHITE);

              int p = 0;

               for (Accounts c : Register.getAccounts()) {
               if (c.getNumber().equals(accountNumber) && (position == p)){

                  view.setBackgroundResource(R.color.colorPrimaryDark);

               }
          p++;
        }

   return textview;
   }
};

listView.setAdapter(adapter);

Explanation: I have a list of associated accounts owned by a user, I need to change the background color of the account that is active at that moment, the problem is that:

view.setBackgroundResource(R.color.colorPrimaryDark);

Is setting more than one element of the listView, thank you.

Answer 1

i changed your code try this

        final ArrayAdapter<String> adapter = new ArrayAdapter<String>(parentActivity, android.R.layout.simple_list_item_1, accountList) {


        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View view = super.getView(position, convertView, parent);
            ViewGroup.LayoutParams params = view.getLayoutParams();
            view.setLayoutParams(params);

            TextView textview = (TextView) view;
            textview.setTextSize(15);
            textview.setGravity(Gravity.CENTER);
            textview.setTextColor(Color.WHITE);


                if (Register.getAccounts().get(position).getNumber().equals(accountNumber) ){

                    textview.setBackgroundResource(R.color.colorPrimaryDark);

                }else textview.setBackgroundResource(0);



            return textview;
        }
    };

    listView.setAdapter(adapter);

Answer 2

Try omitting p and it's condition.

final ArrayAdapter<String> adapter = new ArrayAdapter<String>(parentActivity, android.R.layout.simple_list_item_1, accountList) {


  @Override
 public View getView(int position, View convertView, ViewGroup parent) {
     View view = super.getView(position, convertView, parent);
          ViewGroup.LayoutParams params = view.getLayoutParams();
          view.setLayoutParams(params);

          TextView textview = (TextView) view;
          textview.setTextSize(15);
          textview.setGravity(Gravity.CENTER);
          textview.setTextColor(Color.WHITE);

           if (Register.getAccounts().get(position).equals(accountNumber)){

              view.setBackgroundResource(R.color.colorPrimaryDark);

           }

   return textview;
   }
};

listView.setAdapter(adapter);

Answer 3

You need to add a "else" branch in your condition

if (c.getNumber().equals(accountNumber)){
   view.setBackgroundResource(R.color.colorPrimaryDark);
} else {
  view.setBackgroundResource(R.color.white);
}