How To Set The Visibilty Of Button In A Custom Listview?

I have a custom ListView with a button, so when I click on a button it should disappear and it is disappearing but when I scroll down and come back the button is again appearing an

Solution 1:

In ListView when an item goes out of screen, for efficiency ListView destroys the item and when scrolling back to that item it recreates it by calling getView() method of adapter so you have to keep an array having a boolean for the status of the button which is by default will be true as for visible and in getView() you just put a check by getting the boolean value of status from the boolean array that if true then item is visible else item is invisible. So when you disappear an item you have to set status of item also false. I assume this is the code in your getView() and you have already defined your array of boolean with same length as items of ListView and value of true with name "yourButtonStatusBooleanArray" then following modifications will work for you.

holder.checkbox = (Button) view.findViewById(R.id.checkBox1);

if(!yourButtonStatusBooleanArray[position])
{
 holder.checkbox.setVisibility(View.INVISIBLE);
}
holder.checkbox.setOnClickListener(newView.OnClickListener() {

@OverridepublicvoidonClick(View v) {
holder.checkbox.setVisibility(View.INVISIBLE);
yourButtonStatusBooleanArray[position]=false;

Solution 2:

Try adding holder.checkbox.setVisibility(View.VISIBLE);after the button declaration

Solution 3:

This is happening because of view recycling. What you need to do is maintain an array of say booleans and every time a button is clicked toggle the corresponding boolean. Then in your getview check the corresponding boolean array position and set the state of the button.

for more detail reffer this link

check box in listview not working properly

above example is for check box edit your code.

Solution 4:

You need to implement this method in your ListAdapter which is called every time your View of the row goes from off-screen to on-screen due to the user scrolling the list. The View passed to your getView method may actually be used to display data for a totally different row. This is because the objects are recycled - if you have data for 1,000 rows but only 8 views fit onscreen, the system creates 8 View objects for your rows, not 1,000.

If your class implements ListAdapter you can override the getView method as follows:

publicclassMyClassimplementsListAdapter {

@Overridepublic View getView(int position, View convertView, ViewGroup parent) {

ViewrowView= convertView;

//Create a view for this row if none exists yetif (rowView == null) {
  LayoutInflaterinflater= (LayoutInflater) _context
      .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  rowView = inflater.inflate(R.layout.YOUR_ROW_LAYOUT, parent, false);

//make the button go away if it should not be visibleif (buttonShouldBeNotVisible(convertView)) {  //Your code should determine this
    convertView.checkbox.setVisibility(View.INVISIBLE);  
    //Use View.GONE to make it take up no space
}
return convertView

} }

Solution 5:

You can do something like this :

public View getView(int position, View convertView, ViewGroup parent) {
        View vi = convertView;
        ViewHolder holder;
        if (convertView == null) {
            vi = inflater.inflate(R.layout.grid_adapter, null);
            holder = new ViewHolder();
            holder.checkbox = (Button) view.findViewById(R.id.checkBox1);
            holder.checkbox.setOnClickListener(new OnClickListener() {

                @Override
                publicvoidonClick(View arg0) {
                    if (arg0.getTag().equals("0")) {
                        arg0.setVisibility(View.INVISIBLE);
                        arg0.setTag("1");
                    }
                    notifyDataSetChanged();
                }
            });

            vi.setTag(holder);
        } else
            holder = (ViewHolder)vi.getTag();

        try {

            if (holder.checkbox.getTag().equals("1")) {
                holder.checkbox.setVisibility(View.INVISIBLE);
            } else {
                holder.checkbox.setVisibility(View.VISIBLE);
            }

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return vi;
    }