android-adapterview

Background GridView is a class that extends AdapterView , which means it shows cells in a grid-style efficiently, recycling old views to be shown as new ones when the user scrolls it. The problem Sometimes, you would want to get a special UI, which resembles the Windows Phone Tiles UI, having cells of different sizes on top of each other. Something like this: AABB AACC AADD AADD each letter represents a part of its cell, so cell A is 2x4 , cell B and cell C take 2x1 each , and cell D is 2x2 . It could be even more than that, where cell D finished a bit above what i've shown, and right beneath

Is it possible to know whether a Spinner is open or closed? It would even be better if there was some sort of onOpenListener for Spinners. I've tried using an OnItemSelectedListener like this: spinnerType.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { executeSomething(); } @Override public void onNothingSelected(AdapterView<?> parent) { Log.d("nothing" , "selected"); } }); I can know that the window will close if something is selected (in executeSomething()). But I don't get

I am trying to understand the ListView concept and how it works and I'm trying to create my own adapter which extends BaseAdapter . For ArrayAdapter for instance, there is the notifyDataSetChanged() method which should be called after you've updated the array list which holds all your data, in order to refresh the ListView . But I am creating my own subclass of BaseAdapter . That method is not available to me, or is it? How do i implement this method? Basically, what does that method do exactly, maybe I'll understand then. In case of the ArrayAdapter i'm guessing it looks at what position the