need suggestion for interface

by cellurl » Wed, 21 Apr 2010 05:05:19 GMT


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 I want to turn on two different lights using my Android.
Q: How would you do it?

Bluetooth: AFAIK, BT only supports one (1) channel, this won't work
because the user could be on a call at the same time as I need the
channel.

USB: Host mode isn't coming soon, and I can't use a hack. (I hope to
sell this as an accessory product). I need 2-lights, so just turning
on/off the USB 5v won't work...

WIFI: This seems best, Does anyone agree?? Since it already works on
most models. How to do it cheaply.

Speaker: One guy did DTMF over the speaker to run his robot. But, it
won't work like a cradle or wireless...

IRDA: I thought of making a USB to IRDA dongle, but that would
interfere with any cradle.


Am I missing something? I realize the "intent" of Android is to get-2-
the-internet, but Palm had success by promoting attachments like
these, and I hope Android will too....

-jp







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1. remove checkboxpreference in preferencescreen

hi
everybody

this is vinod i have a problem with my requirement   pleas help me

my  problem is :
 i need to invisible  checkboxpreference in run time ,how could i
solve this one
basically we have no option to invisible in checkboxpreference

please help me any one

rearding ..
vinod

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2. Programmatically expanding / collapsing items of an ExpandableListView

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Hello.

This should be a very simple thing, but it's driving me crazy and
currently one of the older bugs of my app. Given an ExpandableListView
I want to collapse all the groups but the last one and expand the last
one. The code below doesn't work (basically seems to do things at
random). Thanks.



            final ExpandableListView expandableListView =
getExpandableListView();
            final int groupCount = expandableListView.getCount();

            for (int i = 0; i < groupCount - 1; i++)
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              }

            expandableListView.expandGroup(groupCount - 1);

- -- 
Fabrizio Giudici - Java Architect, Project Manager
Tidalwave s.a.s. - "We make Java work. Everywhere."
java.net/blog/fabriziogiudici - www.tidalwave.it/people
fabrizio.giud...@tidalwave.it
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