howdy, Samuel!

how can I help you today?

Hi Mark

I develop an activity that consist of 2 framelayout for fragment A and fragment B. Fragment B will call fragment C. Is it possible to use layout of fragment B as container of fragment C?

that depends on what you mean by "layout of fragment B"

if you mean "the FrameLayout that holds fragment B", a replace() transaction can replace fragment B with fragment C

if you mean "something inside fragment B", fragments cannot be nested, so this will not work reliably

I think the replace() is the best. Thanks

I'll try it

then there is no android:tabLayout attribute, apparently

I have not attempted using it and cannot comment as to whether or not it exists, or exists for all API levels

Okay, thank you. I think it's enough for now. Good bye

Hi Mark

How are you today?

howdy, Prasanna!

how can I help you?

I am using a Spinner that is populated from an ArrayAdapter. I want to have the Spinner say 'Select X'. But when you click on the Spinner the expanded list should not have this 'Select X'. The expanded list should only have the values that can be selected. How do I do this?

AFAIK, you don't

or you create your own subclass of Spinner, perhaps, that has this behavior

Spinners always have a selection, and that selection is always from its adapter

Not sure what you mean by AFAIK

AFAIK = as far as I know

oh ok

you *might* be able to create a tricky adapter that can somehow handle this, but I have not tried it and do not know if it could be made to work

hmmm ok

what I am trying to do is ...

I have several spinners on the screen

The 2nd Spinners values are dependent on the 1st Spinners selected value

And I do not want to show the 2nd Spinner until the 1st Spinner ..

value is selected

That is whey i have 'Select X' in as the 1st value of the 1st Spinner

So that when a value is selected on the 1st Spinner

I can show the 2nd Spinner with the appropriate values.

Any thoughts on how I can implement this?

I wouldn't implement that

and I have no good idea how you would

so to take the user through a series of selections that depend on the previous selection ...

what is a good way to do this in Android?

for a two-tier structure, use an ExpandableListView

for more than two tiers, use an ExpandableListView followed by another activity/fragment that uses a ListView or another ExpandableListView

how is ExpandableListView different from ListView

think of it as a two-tier "tree" widget

groups and children

do you have an example in the Busy Coder

I am adding ExpandableListView to the Widget Catalog in the next version, due out around September 1st

ok. I have about 4 tiers ...

So when the user selects the 2nd tier in the 1st ExpandableListView I will have to take them to another activity/fragment?

yes

ok. Any ideas on where I can find a good example now on ExpandableListView?

there should be stuff in the SDK's ApiDemos

ok

Thanks Mark!

Good luck with all of your speaking engagements. Heading out. Have a great day!

you too!

Howdy Mark.

howdy, Bruce!

Based on your advice, I looked into using SpannableStringBuilder and Html.fromHtml() to format text for a button. But I’d like to lay out the depart and return buttons on the Kayak app. I’ll upload a screen capture of what I’d like to accomplish:

sorry I missed your arrival

If <table> was supported, I’d have a clue…

I suspect that those are not Button widgets

AFAIK you could apply the Button background resource to something else and work out the events to ensure that it changes state appropriately on clicks

another possibility is that they are empty Button widgets into which they are drawing themselves, perhaps via a subclass, with custom Canvas logic

but, yeah, I don't think the Html.fromHtml() trick can handle this scenario

So would a TextView work?

individually, no -- Button inherits from TextView

per my first suggestion, that could conceivably by a TableLayout, nested LinearLayouts, or a GridLayout, with multiple TextView widgets, and a Button-style background on the container

what makes a Button be a Button is mostly the background resource, a StateListDrawable

I have not tried this, so I am presuming that it would work

So I could apply Html.fromHtml() to three separate TextViews, and wrap them in a layout?

well, you would not need Html.fromHtml() to mimic what you see there in Kayak, but otherwise yes

Yeah, that just occured to me.

Thanks

One more...

Still trying to get imeOptions =”actionNext” functionality for my two line EditText. Tried if(actionId == EditorInfo.IME_ACTION_NEXT), but in debug, the value of actionId appears to be 0 every single time regardless. Then, with secondEditText being where I want to transfer focus, I tried secondEditText.requestFocus(). Appears to have no effect. And secondEditText is focusable. Tried an InputFilter, but that just limits the number of characters, and doesn’t transfer focus. Any ideas?

refresh my memory: is your problem when clicking the action button, when pressing Enter on the 2nd line, or both?

After entering one or two lines of text and pressing Enter, it appropriately moves to the next EditText in 2.1, does not in other versions I've tested.

well, in the Enter scenario, since you are not clicking on the action button, I am not surprised that actionId is 0

in the one case where I have a single-line EditText, I use if (event == null || event.getAction() == KeyEvent.ACTION_UP)

see https://github.com/commonsguy/cw-omnibus/b…

thanks, I'll check that.

One more... I remember seeing somewhere that after the user clicks on the share icon, it can be configured to display the most common or recent share resource. But now I can't find any info on it. Can you direct me?

in the action bar that is.

ShareActionProvider, IIRC

specifically setShareHistoryFileName()

or skip that to use a common history

Great, I'll check it out.

Thank you again.

Bye.