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Re: Java OOP tutorial (Was: ArrayAdapter)

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On 31/03/2011 12:52, Michal Kleczek wrote:
> Dirk Bruere at NeoPax wrote:
>
>>
>> public class controller extends Activity {
>>
>> /** Called when the activity is first created. */
>>       @Override
>>       public void onCreate(Bundle savedInstanceState) {
>>           super.onCreate(savedInstanceState);
>>           setContentView(R.layout.main);
>>
>>           Context currentContext = this;
>>           final BlinkAPI blinkAPI = new BlinkAPI(currentContext);
>>
>>
>>           lvVideo = (ListView)findViewById(R.id.ListViewVideo);
>>           radioTitleAdapter = new
>>
> ArrayAdapter<String>(this,android.R.layout.simple_expandable_list_item_1,BlinkAPI.videoArrayList);
>>           lvVideo.setAdapter(radioTitleAdapter);
>>           }
>>           ...
>>          }
>>
>> //*******************************************
>>          public class BlinkAPI {
>>
>> private static Context mContext;
>> static ListView albumsLV, videoLV, tracksLV, artistsLV, radioLV;
>>
>>
>> public BlinkAPI( Context ctx)
>> {
>> BlinkAPI.mContext = ctx;
>>
>> radioLV = (ListView )((Activity)
>> mContext).findViewById(R.id.ListViewRadio);
>>
>> }
>>
>> private static void updateRadioTitles( )    {
>>
>>               ...
>>               radioTitleAdapter.add(titleStr);		
> //PROBLEM
>>               radioTitleAdapter.notifyDataSetChanged(); //PROBLEM
>>       }
>>
>> How do I get at radioTitleAdapter?
>>
>
> There are so many issues with the code above that answering your direct
> question does not make sense IMHO (but surely someone is going to answer it
> and additionaly point out the issues).
> So in hope to be bright and suggest you to search Google for an OOP tutorial
> (possibly in Java) - I actually did:
> http://www.google.pl/search?q=java+object+oriented+programmin+tutorial
>
> And you know what - nothing really useful! A lot of material covering
> (somewhat like in an encyclopedia) what an object/class/instance
> variable/method is but nothing really _introductory_ that would illustrate
> "live objects communicating with each other to achieve a goal".
>
> Does anybody know of anything like this online?
>

The problem is accessing something located in:
public void onCreate(Bundle savedInstanceState)

I thought I could do it with context.
I can certainly access (say)a ListView defined in onCreate by including
videoLV = (ListView )((Activity) mContext).findViewById(R.id.ListViewVideo);

in public BlinkAPI( Context ctx){}

I do not know a corresponding way to get an adapter

-- 
Dirk

http://www.neopax.com/technomage/ - My new book - Magick and Technology

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ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 02:03 +0100
  Re: ArrayAdapter Roedy Green <see_website@mindprod.com.invalid> - 2011-03-30 19:25 -0700
    Re: ArrayAdapter Peter Duniho <NpOeStPeAdM@NnOwSlPiAnMk.com> - 2011-03-30 19:42 -0700
      Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 04:50 +0100
  Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-03-31 16:02 +1300
  Re: ArrayAdapter Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-03-31 06:57 -0300
    Re: ArrayAdapter Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-03-31 10:19 +0000
      Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 12:21 +0100
        Java OOP tutorial (Was: ArrayAdapter) Michal Kleczek <kleku75@gmail.com> - 2011-03-31 13:52 +0200
          Re: Java OOP tutorial (Was: ArrayAdapter) Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 13:16 +0100
          Re: Java OOP tutorial (Was: ArrayAdapter) "John B. Matthews" <nospam@nospam.invalid> - 2011-03-31 16:19 -0400
        Re: ArrayAdapter Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-03-31 14:47 +0100
          Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 15:32 +0100
            Re: ArrayAdapter Nigel Wade <nmw-news@ion.le.ac.uk> - 2011-03-31 15:42 +0100
              Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 16:35 +0100
                Re: ArrayAdapter markspace <-@.> - 2011-03-31 09:56 -0700
                Re: ArrayAdapter Patricia Shanahan <pats@acm.org> - 2011-03-31 10:09 -0700
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 21:26 +0100
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-03-31 21:29 +0100
                Re: ArrayAdapter Patricia Shanahan <pats@acm.org> - 2011-03-31 13:50 -0700
                Re: ArrayAdapter markspace <-@.> - 2011-03-31 15:27 -0700
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-01 00:42 +0100
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-01 00:38 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-01 13:08 +1300
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-01 01:10 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-01 13:45 +1300
        Re: ArrayAdapter Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2011-03-31 17:31 +0000
        Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-01 13:06 +1300
          Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-01 01:13 +0100
            Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-01 13:35 +1300
  Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-02 02:41 +0100
    Re: ArrayAdapter Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-04-02 04:19 +0200
      Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-02 03:55 +0100
        Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-02 17:12 +1300
          Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-02 05:18 +0100
            Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-02 19:58 +1300
              Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-02 14:48 +0100
                Re: ArrayAdapter Lew <noone@lewscanon.com> - 2011-04-02 10:48 -0400
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-03 10:50 +1200
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-03 01:41 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-03 12:53 +1200
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-03 02:52 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-03 19:56 +1200
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-03 17:07 +0100
                Re: ArrayAdapter Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-03 17:27 +0100
                Re: ArrayAdapter Lawrence D'Oliveiro <ldo@geek-central.gen.new_zealand> - 2011-04-04 10:19 +1200
                Re: ArrayAdapter Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2011-04-03 22:55 -0300

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