Android studio “ Attempt to invoke virtual method on a null object reference”

Question

when i create the custom view of each items of the list view, i get a null pointer exception and i dont know why, the layout id seems correct

import android.         


        

Answer 1

Try changing the relevant code inside your Adapter class to the following

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View itemView;
    if (convertView == null) {
       itemView = inflater.inflate(R.layout.item_view, parent, false); 
    } else {
       itemView = convertView;
    }
    ...
    ...
    return itemView;
}