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From Filip Maj <>
Subject Re: [Android] Back Key events and Reality
Date Thu, 19 Apr 2012 18:17:32 GMT
We definitely cannot revert that commit Joe put in. Back button didn't
work at all (just exited) before that commit.

Sucks that the note is broken but it works as expected on other devices
(as Joe points out).

Simon can you try to debug the issue on the Note and see how the execution
flow differs from the other Android devices?

On 4/19/12 10:58 AM, "Joe Bowser" <> wrote:

>OK, I just went through Mobile Spec's manual tests on the following
>Galaxy Nexus
>Nexus S
>Motorola RAZR
>Samsung Galaxy S2
>LG Optimus One
>Currently, if you don't override the back button, the backPressed event
>fires on the keyDown.  If we override the event, the backbutton doesn't
>work on the keydown, but the event fires on the keyup instead.  This I
>think is the proper behaviour since we're intercepting the back button and
>making it the users' responsibility to handle this event.
>The old method had the default behaviour for the back button (where it
>quits on keydown) occur, as well as the keyUp behaviour happen.  Of
>since the app is exited and is in the background whatever happens with the
>back button at that point is moot.  The fact is that I expect the back
>button to work when I press it, and I don't consciously think about key up
>or key down when I do so.  I also think that Google put it on keydown for
>reason, especially since it's not really a key anymore.
>On Thu, Apr 19, 2012 at 10:48 AM, Joe Bowser <> wrote:
>> You're saying that the behaviour is different on the Note? I'll run
>> through our device bank here, but the fact is that the Back Button would
>> ALWAYS exit, not progress through the history but just straight up exit
>> regardless of where in the app you were.  What I added was backPressed
>> which would only exit if you were at the top of the history.  Also,
>> backPressed should be supported for Android versions higher than Android
>> 2.0, and since we're only supporting 2.1+, we should have been fine.
>> I'll investigate this, but honestly if it's not consistent across
>> what do we do then?
>> On Thu, Apr 19, 2012 at 10:26 AM, Simon MacDonald <
>>> wrote:
>>> The reason we switched to keyUp is so you could slide your finger off
>>> up button in case you changed your mind about clicking on the back
>>> I noticed that you checked in:
>>> On my Samsung Galaxy Note running Android 2.3.6 the back button does
>>> work. That is when I do not regisiter for a "backbutton" listener and I
>>> expect that when I click the back key that my app would exit. With our
>>> the back button doesn't exit the app. I have to click the home button
>>> exit.
>>> Reverting your change returns the back button behaviour to normal. So
>>> something is still janky. I haven't been able to test it on my phone
>>>as I
>>> can't convince it to be recognized on my laptop.
>>> Simon Mac Donald
>>> On Tue, Apr 17, 2012 at 8:46 PM, Joe Bowser <> wrote:
>>> > Hey
>>> >
>>> > Remember this issue:
>>> >
>>> >
>>> > I'm surprised that I'm catching it now, but the Back Button is really
>>> janky
>>> > on my Nexus S running 2.3.6, and I'm working on a fix now.  What was
>>> > reasoning behind the Back Button being on the keyUp instead of the
>>> keyDown?
>>> > I don't remember.
>>> >
>>> > Joe
>>> >

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