I think you can't use the '[ ]' operator on the JSONArray.... (if valArray2 is a JSONArray). [ ] only works in regular arrays.
Look at the JSONArray class and see what method is implemented in that class to return an JSON element at position 'x'. And you have to make sure that the value provided to the 'setText' method is a CharSequence (e.g. a String). If you're not familiar with Java, i strongly suggest you do become familiar with it :-). On Sep 30, 3:50 pm, vorcigernix <[email protected]> wrote: > Thanks. This moved my understanding of whole BaseAdapter (which is not > data adapter at all). Now I am frozen on some casting unknown to me > (probably). I created code: > > public View getView(int position, View convertView, ViewGroup > parent) { > // A ViewHolder keeps references to children views to > avoid unneccessary calls > // to findViewById() on each row. > ViewHolder holder; > > // When convertView is not null, we can reuse it directly, > there is no need > // to reinflate it. We only inflate a new View when the > convertView supplied > // by ListView is null. > if (convertView == null) { > convertView = mInflater.inflate > (R.layout.list_item_icon_text, null); > > // Creates a ViewHolder and store references to the > two children views > // we want to bind data to. > holder = new ViewHolder(); > holder.text = (TextView) convertView.findViewById > (R.id.text); > holder.text2 = (TextView) convertView.findViewById > (R.id.text2); > holder.icon = (ImageView) convertView.findViewById > (R.id.icon); > > convertView.setTag(holder); > } else { > // Get the ViewHolder back to get fast access to the > TextView > // and the ImageView. > holder = (ViewHolder) convertView.getTag(); > } > > // Bind the data efficiently with the holder. > > holder.text.setText(valArray2[position]); > holder.text2.setText(valArray2[position]); > holder.icon.setImageBitmap((position & 1) == 1 ? mIcon1 : > mIcon2); > ....... > > Which is basically list14 example from SDK. But, holder.text.setText > (valArray2[position]); returns error that Array is expected and mine > is JSONArray. How to cast my JSONArray to expected format? > > On Sep 30, 6:37 pm, Streets Of Boston <[email protected]> wrote: > > > > > Implement your subclass of BaseAdapter (e.g. JSONArrayAdapter). > > Implement/override the getCount(), getItem(int position), etc. to make > > your BaseAdapter a proper list-adapter around your jsonarray. > > > Implement the getView method; it provides the 'position' and > > 'contentView' parameters. > > - Use position and getItem(position) to obtain anjson-element from > > your jsonarray. > > - re-use contentView or create a brand-new one if it is null: > > - Assign text/images to the contentView (or its child-view) based > > on > > thejson-element you got. > > > Then assign an instance of your JSONArrayAdapter to your list- or grid- > > view. > > And viola. It should work :) > > > Take a look at the 'API Demo' in the Android SDK for examples. > > > On Sep 29, 3:45 pm, vorcigernix <[email protected]> wrote: > > > > Ok, I don't get a BaseAdapter logic, I assume because I am not used to > > > java. I found tons of examples on net (mostly for drawing pictures > > > etc) but it make no sense to me. For example, list4 from sdk do > > > something similar, but...where are they binding data? I see where data > > > is set to custom class, but what actually returns data from > > > BaseAdapter? GetView? > > > Thanks for any clarification > > > Adam > > > > On Sep 28, 8:15 pm, Mark Muphy <[email protected]> wrote: > > > > > vorcigernix wrote: > > > > > Hello, > > > > > I made my application from various examples and sources, so now I have > > > > > filled jsonarray and preparedlistview(with custom rows formatting). > > > > > Now I need to replace > > > > > > ListAdapter myAdapter =(new ArrayAdapter<String> > > > > > (this,R.layout.rowlayout, R.id.TextView01, values)); > > > > > > with myjsonarray based adapter. All I found is some technique to > > > > > iterate through alljsonrecords and construct string array. It sound > > > > > like perverse to me, is it really necessary? > > > > > Create your own adapter class from BaseAdapter, and you can traverse > > > > yourJSONhowever you want. > > > > > -- > > > > Mark Murphy (a Commons > > > > Guy)http://commonsware.com|http://twitter.com/commonsguy > > > > > Need Android talent? Ask on HADO!http://wiki.andmob.org/hado-Hidequoted > > > > text - > > > > - Show quoted text -- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
