hello

hello, jth!

I'm back with more questions

how can I help you today?

Ok #1

I posted on Stack Overflow, having issues with Volley and 301/302 Redirects

I have a large app that I have switch to Volley

Not thrilled with decision

I already commented on that question

What if I cannot get rid of volley

and I only want to use OkHttp3 for the httpstack replacement

the Volley source code is at https://android.googlesource.com/platform/frame...

you would have to try to figure out why it is not doing what you want

ok

I do not live and breathe Volley; outside of the one book example, I have never touched it

(actually, not true, I worked with it for NetCipher)

but I was not testing redirect scenarios

Seems like they said to use it and then forgot it

this is one of the reasons why I have never recommended it

it was a classic "throw the bits over the wall" sort of release

if it wasn't for one Google I|O conference presentation from Ficus Fitzpatrick, we might not even know about Volley

OkHttp handles most of what Volley does directly

Almost all calls I am dealing with is JSON data, but do I have to use retrofit?

no

you *can* use Retrofit, but it is not required

ok seems like it might be easier dev effort and testing effort to just switch volley to okhttp.

without retrofit

in the book, I have a lot of variations of a sample app that loads the latest Android questions from Stack Overflow

it includes implementations using OkHttp, without Retrofit

you will need a JSON parser, but you have a variety of options for that

already using GSON

and found your book after going down the volley route :(

ok I will speak of it no more

Multi-select listviews

GetCheckedItemPositions

should I use that, seems like a lot of extra work to found out the items selected

or should I have an onClick listener and keep track of the items the user selects?

getCheckedItemPositions() works in concert with rows that implement Checkable

the SparseBooleanArray is a pain, but that's because they designed the API to take into account recycling

you would basically have to reimplement that part yourself, if you wanted to roll your own selection tracking

ok so that is the way I am doing it now, I will leave it that way. I am using checkable row

#3 I am having issues with ListView onitemclicklistener on older 4.x devices. Only solution I have found is using OnClick on each item in row.

um, what sort of issues?

only have imageview, spacerview, textview, imageview in the row

On the 4.x the onitemclicklistener is not firing

how terrible is putting the onClick on each item in the adapter?

there have been plenty of ListViews implemented, by plenty of developers, with simple rows, that work fine with onItemClickListener(), going back to Android 1.0

hmm ok

the biggest problem with onClick() is visual feedback, showing the click

is it true that you then have x number of listeners instead of just 1

if you still have that now, even though your OnItemClickListener is not being invoked for some reason, and you want to use OnClickListeners on individual widgets, you can do that

but, yet, is requires MxN listeners (M rows, N widgets per row on which the user can tap)

er, that should have been "but, yes, ..."

for example, some of the recent-Android-questions sample apps that I cited earlier have ListViews with rows showing the question title and the asker's avatar

they all respond to item clicks just fine, as I use that to launch an ACTION_VIEW activity to view the Stack Overflow question in a Web browser

I wonder if it is because the listview is in a popupwindow

that could have an impact

I don't use those much

and there is a ListPopupWindow specifically to deal with scrolling and stuff in a popu

er, popup

You suggested before a dialogfragment, so I will try switching to that

last question and then I will leave you alone

The listview allow the user to select filter options and then outside the listview is a button that the user selects when they are finished

so, like an OK button?

yes "Apply"

what is the best way to reference the listview from the button's onclick

current I have a local reference in the fragment

um, well, the button and the ListView are in the same container, right?

some controller should be managing both

the controller therefore should have access to both

so, route the onClick to the controller, which handles doing whatever needs to be done with the ListView

here, by "controller", it could be some dedicated controller or presenter class, or it could be a fragment, or it even could be the activity

ok

but something set up the PopupWindow and its contents, and it is that "something" that is responsible for handling the click event

yes popupwindow is also in the fragment

so when I inflate the listview and setup the adapter, the fragment has a reference to the listview

and on the onclick I use that reference to find the items selected

if the fragment is setting up the ListView and the Button, that seems fine

ok that is all my questions for tonight

thank you for your time

you're welcome!