Crash Mobile build 758 on Android 5.1.1

[Lubomir I. Ivanov]

On 30 January 2016 at 21:10, Willem Ferguson
<willemferguson at zoology.up.ac.za> wrote:
> Reloading the same app and version from the daily builds makes no
> difference. Here is a tiny bit more
> information upon very first startup it goes through the user verification
> process and then,
> while loading the dive log, it crashes. Upon restart it crashes during
> initial loading.

if the stacktrace is even remotely related to the subsurface qml
codebase, i would look for the problematic GridLayout in one of the
following components (instantiated in main.qml):
(note: i can't build / test the mobile version)

./CloudCredentials.qml
./DiveDetailsEdit.qml
./DiveDetailsView.qml
./DownloadFromDiveComputer.qml
./GpsList.qml
./Preferences.qml
./ThemeTest.qml

it could be one of these components that has a line of code that
confuses the Qt GUI stack.

> Something else. When I installed the app from the Play
> Store, I got a message that the installation was not successful. Have no
> idea what that means.

i have no idea how the google play submission system works.

>
> Unfortunately I wiped out all the older versions of Subsurface-mobile and
> they are not
> accessible any more on the daily builds.

if someone has a set of previous builds it would be best for him / her
to send them to you.
you should then start clean-installing each one going backwards from
the problematic build until it works.

once you have a working build XXX we should look for the commit that broke it.
the commit i have mentioned previously (9bc7ef7567ba) is the last
commit that modifies GridLayout related code.

this procedure, of course, is the offspring of the fact that debugging
Qt on Android is apparently *a bit involving*.
i strongly encourage debug verbose outputs that reach logcat in the lines of:
>> subsurface: credentials entered
>> subsurface: divelist loaded
>> ???
*** SIGSEGV

^ hmm, a stage was not reached then it must be component X failing.

lubomir
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