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Nullpointerexception custom Adapter at getview no inflater


Change you code by this,

 private class MyAdapter extends
ArrayAdapter<String> {

            public MyAdapter(Context context,
String[] strings) {
                super(context, -1, -1, strings);
            }

            @Override
            public View getView(int position, View
convertView, ViewGroup parent) {       //trying to
reuse a recycled view
                ViewHolder holder;
    if(convertView == null){
                holder = new ViewHolder();
                LayoutInflater mInflater =
(LayoutInflater) 
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                convertView =
mInflater.inflate(R.layout.yourlayout, null);

    LinearLayout linear = (LinearLayout)
convertView.findViewById(R.id.lnlayout);
    linear.setLayoutParams(new
AbsListView.LayoutParams(
                       
AbsListView.LayoutParams.WRAP_CONTENT,
                       
AbsListView.LayoutParams.WRAP_CONTENT));
    holder.tv = (TextView)
convertView.findViewById(R.id.lnlayout);
    holder.rbg = (RadioGroup)
convertView.findViewById(R.id.lnlayout);
    convertView.setTag(holder);

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



               linear.setId(50);

                holder.tv.setId(100);


                holder.rbg.setId(200);
               
holder.rbg.setOrientation(LinearLayout.HORIZONTAL);

               
holder.rbg.setOnCheckedChangeListener(new
OnCheckedChangeListener() {

                    public void
onCheckedChanged(RadioGroup group, int checkedId)
{


                    }
                });
                //Make the list Items containing
radiobuttons en textviews.
                for (int i = 0; i < 5; i++) {
                            holder.rName = new
RadioButton (Bouwonderdeel.this);
                           
holder.rbg.addView(holder.rName);
                }  

                }
                else{
                    holder = (ViewHolder)
v.getTag();
                }

                 linear.addView(holder.rbg);
                 linear.addView(holder.tv);
                
holder.tv.setText(super.getItem(position));

                return convertView;

            }
        } 
hope it will help you

Categories : Java

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