Hello,
This is a two part post. First part, if it is a bug, where do I
report bugs? Second part, is the behavior I'm observing.
1. GridView has method to set its internal Adapter.
2. Derive a new adapter from BaseAdapter, override method getView
(int,View,ViewGroup)
3. In getView method, put code to instantiate a View grid element
that is displayed on the grid.
Use the samples that are part of the android SDK, ie
if (convertView == null) {
// create the view
} else {
// cast the view element
}
return the View;
4. Create a local array in the Adapter so you can save a pointer to
each one of the elements you created in the getView method mentioned
above for later use.
5. Notice through a debugger, GridView goes through 1 -> N, (+1)
elements during initialization.
For example, if I have 5 elements in the array of the Adapter, the
getView method will be called as such:
getView(0,...) where 0 is the position, null 2nd arg
getview(1,...)
getview(2,...)
getview(3,...)
getview(4,...)
getview(0,...) <-- one too many. Doesn't maintain pointer to this
View, 2nd arg still null
This would be ok, but GridView still maintains a pointer to the
original element (View) created the very first time for position
Zero. If I don't handle this correctly, I lose the pointer to the
first element, and so I can't manipulate the View. So I have a
special case to handle the fact I get an extra call with position 0
coming in and the second element being null.
I don't think this is normal behavior and it looks like GridView's
initialization loop is flawed. I don't know, please help me
understand if I'm wrong. In the meantime, I'll try to dig around the
source.
thanks in advance,
K
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