howdy, Bruce!

how can I help you today?

From Omnibus 0.5: ((StaticFragmentsDemoActivity)getActivity()).showOther(v);

how does getActivity know which activity to return, if there is more than one?

a fragment instance is only hosted by one activity

And hello to you too.

just as a widget is only hosted by one activity

so, getActivity() returns the activity instance that is hosting this fragment instance

How is the activity showing that it is the host, by referencing the main.xml that contains the fragment?

an activity hosts a fragment either by using a layout with a <fragment> element, or by executing a FragmentTransaction that adds one

thank you

you're welcome!

One more...

howdy, Guille!

Hey Mark

When I run ActionBarDemo in 4.03, with the actionbarsherlock library (which works on everything else I've tried), I don't show the tool icons on the bottom, just the textview and edittext

press the MENU button

your emulator is probably set up to emulate a device that has a MENU button

which means the ... is suppressed

thanks

(BTW, howdy, Chris!)

Guille: do you have a question?

Hey. I'm back after like a 9 month break. I've forgotten everything :)

My question is probably horrible and hard to give an exact answer. I'm just looking for general direction. I'm working on a simple app that is going to have a user pressing a button, a REST call being made and the UI updated based on the results of the REST call. I have a mock up where where I create a helper class that sets up the http client and kicks off an AsyncTask to perform the REST call and updates the UI. I want to eventually get it where I can create some sort of helper object that lets me perform http puts, gets, etc on a url and provides me the results. Based on this, I wanted to see if you had a recommendation on what approach I should take. I'm aware of threads, AsyncTask, Handler and Binder.

(Guille: sorry, will get to you after Chris, I guess)

no problem :)

Chris: if your request needs to happen regardless of what the user does at the UI layer, have the request be processed by an IntentService, so it runs independently of your activities

otherwise, an AsyncTask is my preferred choice

Oh yeah I forgot about IntentService

I'll look into that. Thanks.

Guille: your turn now, honest

I have a question about a situation i had and want some validation on what i found. I was noticing that the Total size of my app was growing on my phone every time i updated a row in my database. What I noticed was that i wasn't closing the database connection on some occasions. would that make the total size of my app grow? closing the connection seems to have fixed it. btw, by size i mean the Total in MB not the Application or Data.

since nothing is cached in SQLiteDatabase (as far as we know), I would find that somewhat surprising

nope, but only because I dont know how to :)

oh, wait

are you referring to RAM or on-flash storage size?

it is possible, i am referring to the size that you see when you look the app on Settings -> Application -> <Application>

that would be on-flash storage

SQLite is transactional, so I would not expect holding a SQLiteDatabase open to keep any files around that would get cleaned up once you close it

however, that gets into SQLite's own implementation, and I'm far from expert on that

cool, oh well it seems to be working now, so i guess cross my fingers! :)

Bruce: do you have another question?

no thank you

OK, if anyone has a question, chime in

ok I have another one

go ahead

back to database stuff. this error has only happened once. unfortunately for me it happened to my client

java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. [in ListView

This happened while installing the app on the phone

that's impossible

none of your code runs while installing the app on the phone

ok maybe I need to get more details then

hmm let me describe the process might give a better idea

that error could certainly occur when the user ran your app

So maybe it happened right after install and when it was starting

because the first page is a list of companies

one cause would be because you did a requery() on a Cursor from a background thread, where that Cursor was attached to a ListView via a CursorAdapter

I am using a custom SimpleCursorAdaptor but i dont requery() anywhere

something in a background thread tried doing something that caused the SimpleCursorAdapter to think data changed

Yeah, when the user opens the app, onCreate it call a IntentService to update the database. But no where do I try to update the screen with the new data.

:: shrug ::

beats me, then

jajaja

ok thanks for your help!

you're welcome!

if anyone has a question, chime in

Running your 0.5 code, I've gotten a couple of strange xml errors, because they reference things that aren't in the xml. For example, with editor.xml in ViewPagerFragmentActivity, I'm getting a failure to resolve a color value in textColor, when there is no text in the xml.

textColor is not set in editor.xml

nor is it modified within EditorFragment

hence, I have no idea what you are seeing

can you take a screenshot?

(one that shows the error message and location?)

BTW, I am assuming this is a compile-time error

ah, that's in ActionBarSherlock

make sure your build target for the project is API Level 14 or higher

<uses-sdk android:minSdkVersion="15" />

no, your build target

Project > Properties > Android

Android 4.0.3 is the only one checked

actionbarsherlock works fine elsewhere

well, that should be fine

try Project > Clean and see if that helps

already tried, I'll let you move on

thank you

again, if anyone has a question, chime in

Same project as before. It doesn't compile because it doesn't generate R.java

that is because of that error

that error is usually caused by the build target being wrong

I have never seen that error in any other circumstance

if the other projects work fine, you will need to poke around and try to figure out what is wrong with that one project's configuration

yep, that fixed it

I was looking at the wrong properties before.

ah, OK

again, if anyone has a question, just ask

we're running out of time -- any last questions?

OK, that's a wrap for today's chat

thanks mark

next one is Tuesday, 10am Eastern Time

have a pleasant day, all!