Unable to start activity:UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView

Question

I want to write a ListView in basic format but I get an error:

UnsupportedOperationException: addView(View, LayoutParams) is not supported in Ad         


        

Answer 1

what should i do???

Correct your code.

UnsupportedOperationException: addView(View, LayoutParams) is not supported in AdapterView

A subclass of AdapterView like a ListView can't have children manually added either in the layout file or added in code. So if you have this in one of your layouts:

<ListView // .. other attributes>
     <// other views <-- notice the children of the ListView tag
</ListView>

don't do it, as this will call the addView method of ListView, throwing the exception. Instead use:

<ListView // .. other attributes />
< // other views

You also can't use any of the addView methods of ListView in code like this:

listViewReference.addView(anotherView); // <-- don't do it

Also, if you use the LayoutInflater.inflate method in the code of the Activity or the adapter(its getView method), don't pass the ListView as the second parameter. For example, don't use:

convertView  = inflator.inflate(R.layout.child_rows, parent);

as in Tamilarasi Sivaraj's answer as that will throw the exception again. Instead use:

convertView  = inflator.inflate(R.layout.child_rows, parent, false);

Related to the exception you posted in the question, it appears you use the setText method with an int(one of the s or i arrays being an int array). The problem is that in this case TextView will think you're trying to set the text using a string resource like this R.string.astring. The int you pass is not a string resource so an exception will be thrown. If s or i is an int and you're trying to show it in the TextView use this instead:

tv.setText(String.valueOf(s[position])); // assuming s is the int array

Answer 2

Try this Like this:

public static class ViewHolder {
    public ImageView imageView;
    public TextView textView; 

    public View getView(int position, View convertView, ViewGroup parent) {
        try{
            ViewHolder holder;

            if (convertView == null)  {
                holder = new ViewHolder(); 
                LayoutInflater inflater = context1.getLayoutInflater();
                convertView = inflater.inflate(R.layout.your_layout, null,true);  

                holder.imageView = (ImageView) convertView.findViewById(R.id.imgview);

                holder.textView = (TextView) convertView.findViewById(R.id.txtview);

                convertView.setTag(holder);  
            } else {
                holder = (ViewHolder) convertView.getTag();  
            }

            holder.textView.setText("your text");
            holder.imageView.setImageResource("your image resource");
        } catch (Exception e) {
            System.out.println("Error: "+e);    
        }

        return convertView;
    }
}

Answer 3

Replace your layout in inflater

 @Override
public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub

    if (convertView == null) {

        LayoutInflater inflater = (LayoutInflater) LayoutInflater
                .from(contex);
        convertView = inflater.inflate(R.layout.your_layout, parent, false);

    }

    txtName = (TextView) convertView.findViewById(R.id.txtName);
    txtName.setText(""+ContactsArr.get(position).get("ContName"));
    txtPhoneNumber = (TextView) convertView.findViewById(R.id.txtContact);
    txtPhoneNumber.setText(""+ContactsArr.get(position).get("ContPhone"));

    return convertView;
}

Answer 4

If you're like me and totally skipped over the answer I needed in @Luksprog's answer because it's buried in it, try using adding the third parameter to the inflate method, also mentioned here:

inflater.inflate(R.layout.group_row, parent, false);

Don't use true instead of false or you will get the same error that brought you here, because it's trying to attach/add it to the parent, hence the addView is not supported in AdapterView error.