You are not looking at it from the right perspective... I promise that if
you do it the way that I explained it will work.
The listview is nothing more than a visual representation of your data
model. The fact that one item in this list needs to be displayed
differently from the rest is something that should be part of the data
model.
The adapter's job is to take your data and adapt it to a visual
representation. The getView() method is not called for selection. The
getView() method on the adapter is called by the listview every single time
it needs to get that visual representation of your data.
So, again, here are the steps to take to get this working... I have added a
few things for clarity:
1. Subclass an adapter class of your choosing (I usually like to use
BaseAdapter, but I have also subclassed ArrayAdapter before).
2. Have the adapter keep track of the position of the last clicked
item. I would probably do this by having a member variable on the adapter,
and a getter and setter to change it. That way, in your onItemClick()
method you can set that value on your adapter, *and then call
notifyDataSetChanged() on your adapter. This will cause the listview to
refresh itself and call getView() for all the items it needs to display.*
3. When you implement getView() on your adapter, check if the current
position is the position of the last clicked item and handle it
appropriately. *The way I would do what you are trying to accomplish is
as follows:*
1. *If the position passed in to getView() is the same as the member
variable that keeps track of the last clicked item, then set the "gone"
part of your view to View.VISIBLE*
2. *If the position passed in to getView() is NOT the same as the
member variable, then set the "gone" part of your view to View.GONE
*
4. If you do this right, you most likely won't have to deal with all of
the code to manually resize an item in the list...
Thanks,
Justin Anderson
MagouyaWare Developer
http://sites.google.com/site/magouyaware
On Wed, Jul 11, 2012 at 10:10 AM, Tolriq <[email protected]> wrote:
> Thanks for answer.
>
> Changing the view is not the problem it's more telling the listview that
> the item have changed.
>
> I already have a custom Cursor adapter but the getview is not called for
> click only for select.
>
> The need is to get sure that the listview scroll enough for the entire row
> to be visible.
>
> Whatever way I'll do the listview would not have the correct information
> at the moment i send therequestChildRectangleOnScreen to assure visiblity
> of row :(
>
> Tolriq.
>
>
> Le mercredi 11 juillet 2012 17:27:21 UTC+2, MagouyaWare a écrit :
>
>> I'm not sure I understand exactly what you are trying to do... But from
>> the code you posted, it looks like you are wanting to change the view of
>> the last clicked item somehow. This should really be handled by the
>> getView() method of your adapter. You would need to write a custom adapter
>> to do this but that is the correct way to handle something like this.
>>
>> Here are some high level steps to help you get started:
>>
>> 1. Subclass an adapter class of your choosing (I usually like to use
>> BaseAdapter, but I have also subclassed ArrayAdapter before)
>> 2. Have the adapter keep track of the position of the last clicked
>> item. I would probably do this by having a member variable on the
>> adapter,
>> and a getter and setter to change it. That way, in your onItemClick()
>> method you can set that value on your adapter
>> 3. When you implement getView() on your adapter, check if the current
>> position is the position of the last clicked item and handle it
>> appropriately.
>> 4. If you do this right, you most likely won't have to deal with all
>> of the code to manually resize an item in the list...
>>
>> Hope that helps...
>>
>> Thanks,
>> Justin Anderson
>> MagouyaWare Developer
>> http://sites.google.com/site/**magouyaware<http://sites.google.com/site/magouyaware>
>>
>>
>> On Wed, Jul 11, 2012 at 6:42 AM, Tolriq <[email protected]> wrote:
>>
>>> Hello,
>>>
>>> I'm currently facing a problem and the solution I use does not satisfy
>>> me.
>>> I'm pretty sure there's a correct way to handle this case so I ask here
>>> :)
>>>
>>> My problem is simple I have a listview with items that have a gone part
>>> that I show on the last clicked item.
>>> This part works well, I also want the clicked item to be fully visible
>>> and here's comes trouble.
>>>
>>> With non expanding item it's easy to do with
>>> requestChildRectangleOnScreen but in my case I can't find a way for the
>>> list to be aware of the new size of the item so it will only scroll the
>>> item to show the expanded part.
>>> The solution I use is if the requestChildRectangleOnScreen was in effect
>>> or if item is last or before last item then scroll by the size of the
>>> expanded item (that i get via measure).
>>>
>>> This works but not perfect since sometimes I scroll the list (when i
>>> before last item) when it would not have been needed :(
>>>
>>> The code used :
>>>
>>> public void onItemClick(AdapterView<?> arg0, View arg1, int
>>>> i, long l) {
>>>> // TODO Auto-generated method stub
>>>> if (curView != null) {
>>>> try {
>>>> curView.setVisibility(View.**GONE);
>>>> } catch (Exception e) {
>>>> }
>>>> }
>>>>
>>>> ListView listView = (ListView)
>>>> findViewById(R.id.mediaslist_**list);
>>>>
>>>> curView = ((RelativeLayout) arg1.getTag(R.id.movieslist_
>>>> **item_details));
>>>> curView.setVisibility(View.**VISIBLE);
>>>> int widthMeasureSpec = MeasureSpec.makeMeasureSpec(0,
>>>> MeasureSpec.UNSPECIFIED);
>>>> int heightMeasureSpec = MeasureSpec.makeMeasureSpec(0,
>>>> MeasureSpec.UNSPECIFIED);
>>>> curView.measure(**widthMeasureSpec, heightMeasureSpec);
>>>>
>>>> if (listView.**requestChildRectangleOnScreen(**arg1,
>>>> new Rect(0, 0, arg1.getRight(),
>>>> arg1.getHeight()), false)
>>>> || listView.**getLastVisiblePosition() <= (i +
>>>> 1)) {
>>>> listView.smoothScrollBy(**curView.getMeasuredHeight(),
>>>> 150);
>>>> }
>>>> }
>>>>
>>>
>>> If someone have the correct way to handle this case thanks for answering
>>> :)
>>>
>>> Regards,
>>> Tolriq.
>>>
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>>
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