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Re: Initializing from context passing

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From	Dirk Bruere at NeoPax <dirk.bruere@gmail.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: Initializing from context passing
Date	Sat, 23 Apr 2011 19:12:38 +0100
Organization	Dirk Bruere at Neopax
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On 23/04/2011 17:35, Daniele Futtorovic wrote:
> On 23/04/2011 17:39, Dirk Bruere at NeoPax allegedly wrote:
>> I have a Data class of the form:
>>
>> Data
>> (
>> public static ListView albumsLV;
>> public static ArrayAdapter<String> albumsTitleAdapter
>> public static ArrayList<String> albumsTitleArrayList = new
>> ArrayList<String>();
>>
>> Data(Context ctx)
>> {
>> albumsLV = (ListView )((Activity) ctx).findViewById(R.id.ListViewAlbums);
>>
>> albumsTitleAdapter = new ArrayAdapter<String>(ctx,
>> android.R.layout.simple_expandable_list_item_1,albumsTitleArrayList);
>> }
>>
>> }
>>
>> and in the main method{
>>
>> public void onCreate(Bundle savedInstanceState)
>> {
>> super.onCreate(savedInstanceState);
>> setContentView(R.layout.main);
>> Context currentContext = this;
>>
>> Data data = new Data(currentContext);
>>
>> }
>>
>> lvAlbum = (ListView)findViewById(R.id.ListViewAlbums);
>> lvAlbum.setAdapter(Data.albumsTitleAdapter);
>> }
>>
>> I never use Data data variable again.
>> Is that sufficient to initialize the static parameters in Data class?
>>
>
> Yeah, but it's crap. At least make it a static method e.g.
> Data.init(Context).

So do not do it in the constructor?

> And do use interface types rather than implementations, unless you
> specifically rely on a detail of the implementation (which is often a
> bad sign). That is, make it a List<T>, not an ArrayList<T>.
>


-- 
Dirk

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

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Thread

Initializing from context passing Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-23 16:39 +0100
  Re: Initializing from context passing Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-04-23 18:35 +0200
    Re: Initializing from context passing Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-23 19:12 +0100
      Re: Initializing from context passing Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2011-04-23 21:47 +0200
    Re: Initializing from context passing Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-23 20:34 +0100
      Re: Initializing from context passing Lew <noone@lewscanon.com> - 2011-04-23 18:35 -0400
        Re: Initializing from context passing Dirk Bruere at NeoPax <dirk.bruere@gmail.com> - 2011-04-24 01:17 +0100
          Re: Initializing from context passing Lew <noone@lewscanon.com> - 2011-04-23 20:32 -0400

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