Hello Mark ;)

hello, Guy!

how can I help you today?

battling with the CursorAdapter

what do i put as an int in the flags

um, could you be a bit more specific? :-)

pass whatever flags you need, or 0 if you do not need any

the only non-deprecated flag is FLAG_REGISTER_CONTENT_OBSERVER

and that is only relevant if you are using a ContentProvider as your data source and are not using a Loader

when do I need to use a loader?

sorry

the Loader framework, for asynchronous queries (particularly of content providers), is covered in the book

thanks

the adapter is show the first few lines in the listview and spinner and then repeating them. only after I pull down the spinner does it refresh and show the whole list

if you have another question, go ahead -- quiet chat room today

thanks

Hi Mark

Guy: I am sorry, but I did not understand your last comment. Let me take a question from Brett, and I will be back with you shortly.

Brett: hi -- do you have a question?

Yes Sir

OK. is my adapter correct https://github.com/gywst/CurrencyExchange/blob/...

I'm putting the finishing touches on an app that makes use of your Large-Screen Tablet tactic of using a single activity with a fragment for each screen

which works very well by the way!

At first, all of my fragment (screen) transactions where using "add", but I was hoping to visually make the previous screen slide out, so I changed the transactions to "replace"

So I'm wondering does Android really treat the replaced fragments any differently after this change? I noticed that destroy still isn't called on the replaced fragment.

replace() is a remove() and an add(), under the covers, AFAIK

I was surprised that the replaced fragment still maintains it's state after popping the backstack

(and returning to it)

I am adding most screens to the backstack BTW for reverse navigation

I do not recall having tried replace() *and* addToBackStack()

I certainly do not remember the specifics about the expected behavior

Yeah, the only reason I tried it was to get the nice slide out animation on the "replaced" screen

sorry that I could not be of greater help on this one

no worries, just thought I'd bounce it off ya

OK

Guy: with respect to your adapter, I do not think you need to call bindView() yourself in newView(), as that should be done for you

you might also consider caching the result of the cursor.getColumnIndex() lookup calls, as those will not change for the life of the Cursor

and I would probably set up a static HashMap<String, Integer> rather than use the big if-elseif chain for mapping the currency to its icon(?)

beyond those, nothing leaps out at me as being specifically a problem with your adapter, at least from a quick inspection

the icons are stored locally

well, yes, they are resources

still, I would use something a bit more declarative, rather than have the big if-elseif chain

but that's just a personal style issue, as much as anything

OK. although I never used a hashmap, I'll check your book. Thanks :-)

if you have another question, feel free to chime in

checking out the HashMap

is there a reason why the listview and the spinner show results twice and when I pull down the spinner it get right list of results?

I have no idea what Spinner you are referring to

for that matter, I have no idea what ListView you are referring to

the spinner and the listivew is here https://github.com/gywst/CurrencyExchange/blob/...

you cannot use the same Cursor for two different purposes at once

two spinners? or the listview and the two spinners

well, either

a Cursor has internal state that can cause problems if multiple parties are trying to use the Cursor at the same time

so I should use an arrayadaper instead?

converting your database results into a model ArrayList and using an ArrayAdapter is one possibility

the app parses a xml from the internet and keeps it in the sqlite db.

are you really using the database for anything other than retrieving all currencies?

if not, I would consider just holding onto the XML

downloading the xml once, and reading it again and again till it expires

where and how do I store the XML?

as a file

using standard Java file I/O

probably in internal storage (e.g., getFilesDir())

and use the same xmlparser I built to readit?

presumably

:-)

now I have to rewrite most of the app :-)

Thanks.

"The management question, therefore, is not whether to build a pilot system and throw it away. You will do that. […] Hence plan to throw one away; you will, anyhow."

:-)

I finished a very intensive mobile course a few months back Java, Android, Objective C and HTML5

5 months 3 times a week.

not enough

Thank. that was helpful. see you soon :-)

you're welcome!