Okay, great, you are right, james..
there is something wrong on the getView implementation, still not sure
why, but my problem is solved by, something like this:
@Override
public View getView(int position, View convertView, ViewGroup
parent) {
ViewHolder viewHolder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, null);
viewHolder = new ViewHolder();
viewHolder.myView = (MyView)
convertView.findViewById(R.id.myview);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.myView.setText(objects[position]);
return convertView;
}
changed to:
@Override
public View getView(int position, View convertView, ViewGroup
parent) {
ViewHolder viewHolder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, null);
viewHolder = new ViewHolder();
viewHolder.myView = (MyView)
convertView.findViewById(R.id.myview);
viewHolder.myView.setText(objects[position]);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
return convertView;
}
On Sep 7, 2:03 pm, jamesc <[email protected]> wrote:
> Hi
>
> 1) I'm still not sure why you're doing the measuring yourself (as I'd
> use a layout xml file to declare the list item's View, and then
> inflate it/set the values in the adapter's getView() call.
> 2) I'm guessing that since you are using an adapter and the view
> holder, that there's an issue with how your getView() method is
> implemented (or perhaps another implementation of an adapter method).
> That is, as you know the view holder allows object reuse; that doesn't
> mean to say that the object that you're re-using has the correct
> values in it. It's only there to avoid the expensive inflation/
> construction; after that point you're expected to set the values in
> that object (for the list item) as per the data in the array/list/
> structure that is backing the adapter.
>
> On Sep 7, 3:55 am, "rious.delie" <[email protected]> wrote:
>
> > thank you,
>
> > 1) yes, it is anitemon alistview, i populate some numbers of it on
> > alistview.
> > 2) i need to set the height of theviewon runtime, because the height
> > of theviewis the variable of width (height = f(width)),
> > it is just as simple as the TextView, which can determine how many
> > lines needed to show the text based on a function of display width,
> > each font width, and the text to be displayed.
> > Yes, i have implemented an adapter (an extends of ArrayAdapter) and
> > have used ViewHolder (static class ViewHolder()),
>
> > my point is, why bitmap1changesorderrandomlywhilebitmap2 stays
> > where it should be,
>
> > something like this:
>
> > alistview=
>
> > view1 = bitmap1 = "hai i am bitmap1 in view1"
> > bitmap2 = "hai i am bitmap2 in view1"
>
> > view2 = bitmap1 = "hai i am bitmap1 in view2"
> > bitmap2 = "hai i am bitmap2 in view2"
>
> > view3 = bitmap1 = "hai i am bitmap1 in view3"
> > bitmap2 = "hai i am bitmap2 in view3"
>
> > view4 = bitmap1 = "hai i am bitmap1 in view4"
> > bitmap2 = "hai i am bitmap2 in view4"
>
> > view5 = bitmap1 = "hai i am bitmap1 in view5"
> > bitmap2 = "hai i am bitmap2 in view5"
>
> > i scroll fastly, then theorderof bitmap1changes:
>
> > view1 = bitmap1 = "hai i am bitmap1 in view4"
> > bitmap2 = "hai i am bitmap2 in view1"
>
> > view2 = bitmap1 = "hai i am bitmap1 in view5"
> > bitmap2 = "hai i am bitmap2 in view2"
>
> > view3 = bitmap1 = "hai i am bitmap1 in view2"
> > bitmap2 = "hai i am bitmap2 in view3"
>
> > view4 = bitmap1 = "hai i am bitmap1 in view1"
> > bitmap2 = "hai i am bitmap2 in view4"
>
> > view5 = bitmap1 = "hai i am bitmap1 in view3"
> > bitmap2 = "hai i am bitmap2 in view5"
>
> > moreover, theorderrandomchangesappearwhilei scroll thelistview
> > fastly, if i gently scroll it slowly the problem is not occured, it
> > seems that the problem is not on the code, (is it a bug on android
> > platform?)
>
> > On Sep 6, 2:17 pm, jamesc <[email protected]> wrote:
>
> > > OK. I've had a quick look.
>
> > > 1) I take it that yourView(MyView) is theitemin theListView?
> > > 2) Why are you doing the measuring (and implementing onDraw())? I
> > > would have thought that you should be using a layout to declare the
> > >ListViewitemand then backing that with a BaseAdapter implementation
> > > (where you should look at using the "viewholder" pattern to allow re-
> > > use of inflated objects.
>
> > > On Sep 6, 5:15 am, "rious.delie" <[email protected]> wrote:
>
> > > > somebody please...
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