ListView + ArrayList + AsyncTask

 

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  • What is a NullPointerException, and how do I fix it? 12 answers 
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    This probably means your first textview is not in this xml file

    servicio.xml

    does not have a textview with an id of titulo 

     holder.nombre = (TextView) convertView.findViewById(R.id.titulo);

    hence the nullpointer

    double check that you are calling the correct textview with the correct id in the correct xml

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