CODEWITHSUNDEEP
javaandroidandroid-listview
Calimero
Calimero

Reputation: 1074

Android ListView Adapter - Hide Items

I have a android listView wich will filled like this:

final ListView userList = (ListView)root.findViewById(R.id.userList);
UserListAdapter adapter = new UserListAdapter(context, userItemList,
getActivity());
userList.setAdapter(adapter);

And the UserListAdapter looks like this:

if (convertView == null) {
    LayoutInflater mInflater = (LayoutInflater)
            context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    convertView = mInflater.inflate(R.layout.user_item_list, null);
}
final TextView txtButtonFollow = (TextView) convertView.findViewById(R.id.button);
if(user == "showed") {
    button.setVisibility(View.INVISIBLE);
}else {
    button.setVisibility(View.INVISIBLE);
}
return convertView;

For some reason all user buttons will be showed (first), but if i scroll the list up and down and "reenter" the user-item, the buttons are hided (this is what i need).

Does anyone had the same problem? Is it not possible to hide elements "on-scroll"? Do i have to setup two user_item_list (one with the button and the other one without the button)?

Edit: Here full getView():

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    UserItem userItem = userItems.get(position);
    RelativeLayout userListItemMain = (RelativeLayout)convertView.findViewById(R.id.userListItemMain);
    String isContact = userItem.getIsContact();

    if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater)
                context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    }

    final TextView txtButton = (TextView) convertView.findViewById(R.id.button);
    if(isContact) {
        txtButton .setVisibility(View.VISIBLE);
    }else{
        txtButton .setVisibility(View.INVISIBLE);
    }
    return convertView;
}

Upvotes: 0

Views: 865

Answers (1)

Raghunandan
Raghunandan

Reputation: 133560

You can change this

 UserListAdapter adapter = new UserListAdapter(context, userItemList,getActivity());

to

UserListAdapter adapter = new UserListAdapter(userItemList,getActivity());

getActivity() will give you context.

Change the adapter constructor accordingly

Use a ViewHolder Pattern

public static class ViewHolder
{
     TextView txtButton ;
}

In getView

  ViewHolder holder;
  if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater)
                context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        holder = new ViewHolder();
        convertView = mInflater.inflate(R.layout.user_item_list, null);
        holder.txtButton  = (TextView) convertView.findViewById(R.id.button); 
        convertView.setTag(holder) 
    } else {

         holder = (ViewHolder) convertView.getTag();
    } 
    UserItem userItem = userItems.get(position);
    String isContact = userItem.getIsContact();

    if(isContact.equals("showed")) {
    holder.txtButton .setVisibility(View.VISIBLE);
   }else{
     holder.txtButton .setVisibility(View.INVISIBLE);
   }

return convertView;

Your if statement

 if(isContact) { // makes no sense. isContact is not boolean

Upvotes: 3

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