CODEWITHSUNDEEP
androidlistview
user1801745
user1801745

Reputation: 389

Keep listview colored while scrolling

My listview has a button per line. When clicked I change this line color. The problem is while scrolling it... return to default or other lines are colored.

The button listening is coded inside the adapter

public CustomAdapter(Context context, List<Map<String, String>> items, int resource, String[] from, int[] to) {
    super(context, items, resource, from, to);
}

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

    final View line = view;
    TextView txtid = (TextView) view.findViewById(R.id.txtid);
    TextView txtnumber = (TextView) view.findViewById(R.id.txtnumber);

    Button btn = (Button) view.findViewById(R.id.btncheck);
    btn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            if (txtnumber.getText().toString().equals(KEY-CODE)){
                line.setBackgroundColor(0x7F00FF00);
            }else {
                line.setBackgroundColor(0x7FFF0000);
            }
        }
    });        

    return view;
}

Upvotes: 0

Views: 42

Answers (1)

Abdennacer Lachiheb
Abdennacer Lachiheb

Reputation: 4888

I faced somthing like this once, you can save the state of the button using HashMap where the the boolean indicate the state of the button ( true if it was clicked and false otherwhise ), know inside getItemView check if current button is clicked or not from the HashMap.

A little bit of code :

inside getItemView first initialize each button to false (not clicked)

if(map.get(v.findViewById(R.id.button)) == null)  
      map.put(v.findViewById(R.id.button)),false);

and after clicking the button set the Boolean to true :

map.put(v.findViewById(R.id.button)),true);

and finally check if the Boolean is set to true or false and set the color.

Upvotes: 1

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