CODEWITHSUNDEEP
androidandroid-listview
Janusz Hain
Janusz Hain

Reputation: 617

Coloring specific item is ListView

So, for example I have some ListView lv.

In each item in lv I got TextView tv.

Now I want to search each tv in lv and if I find tv with text I wanted to find, then I want to color this specific item.

I tried that: android - listview get item view by position and then color an item, but it crashed. Sorry, I deleted the code (was trying several methods).

Any idea how to do it? Thx for help ;)

Edit: I know I can use custom adapter etc. But I want to avoid creating new adapters due to optimization.

List View: 1, 2, 3

User clicks button to find 2

TextView with 2 has to change background to red

I wanted to create some loop to go through variables, if found change color of an item and break the loop.

Upvotes: 0

Views: 92

Answers (3)

Kristy Welsh
Kristy Welsh

Reputation: 8392

You need to use an adapter to feed into the list view. It can be an array, or a MatrixCursor created from a sqlite call. Once you have that, and assuming your item list xml file has a LinearLayout with a TextView in it: 

    View parentThis = (LinearLayout)inflater.inflate(R.layout.your_layout, container, false);
    ListView listView = (ListView)parentThis.findViewById(R.id.your_list_view);
    listView.setAdapter(getListViewAdapter()); //set up your array or matrix cursor
    listView.setOnItemClickListener(new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

            LinearLayout layout = (LinearLayout) view;
            TextView textView = (TextView) layout.findViewById(R.id.YourTextView);

        }
    });

Upvotes: 0

Eric Castelo Branco Mesquita
Eric Castelo Branco Mesquita

Reputation: 106

You can create a custom adapter them check if the TextViw has the text you want.

public class ProgramasListAdapter extends ArrayAdapter<YourModel> {

    public CustomAdapter(Context context,List<YourModel> objects) {
        super(context, 0, objects);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        YourModel object = getItem(position);

        ViewHolder holder;
        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.item_list, null);
            holder = new ViewHolder();
            holder.textView = (TextView) convertView.findViewById(R.id.textview);
            holder.layout = (LinearLayout) convertView.findViewById(R.id.layout);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.textView.setText(object.getText());
        if (object.getText().equals("your_text"))
            holder.layout.setBackground(...);

        return convertView;
    }

    static class ViewHolder {
        TextView textView;
        LinearLayout layout;
    }
}

Then set the adapter to your ListView:

mAdapter = new CustomAdapter(context, myModelArray);
listView.setAdapter(mAdapter);

Upvotes: 1

Adam Fręśko
Adam Fręśko

Reputation: 1064

You need to set items with type and then based on that color.

Override two fallowing methods in your adapter.

@Override
public int getItemViewType(int position) {
// Define a way to determine which layout to use, here it's just evens and   odds.
return position % 2;
 }

  @Override
public int getViewTypeCount() {
return 2; // Count of different layouts
}

then in getview method use getItemViewType() and set color

Upvotes: 0

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