Thank you..finally found some way to go, perhaps not best one, but working :)
On Oct 1, 3:09 am, Streets Of Boston <[email protected]> wrote: > 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-Hidequotedtext - > > > > > - 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 -~----------~----~----~----~------~----~------~--~---
