[Solved] Thank you Robert!
I hope it works on iOS as well as I expect it will have similar problems.
int main(int argc, char *argv[])
{
QApplication application(argc, argv);
cms::MainWindow mainWindow;
QObject::connect(&application,
SIGNAL(applicationStateChanged(Qt::ApplicationState)),
&mainWindow,
SLOT(applicationStateChanged(Qt::ApplicationState)));
/// Use signal QGuiApplication::applicationStateChanged(Qt::ApplicationState
state)
/// to catch Android and hopefull iOS users pressing the home or multi-task
button.
/// Under Android, users can press rectangular multi-task button,
/// this will change state to Qt:ApplicationInactive.
///
/// When exiting Qt::ApplicationActive state, save settings.
///
/// Is there any reason to disable this for desktop platforms?
void MainWindow::applicationStateChanged(Qt::ApplicationState state)
{
static Qt::ApplicationState oldState = Qt::ApplicationSuspended;
if(oldState == state)
{
return;
}
oldState = state;
if(Qt::ApplicationActive == state )
{
return;
}
Settings::write(Settings::settings(), this);
}
-Ed
> On Apr 7, 2015, at 10:27 AM, Robert Iakobashvili <corobe...@gmail.com> wrote:
>
> On Tue, Apr 7, 2015 at 6:05 PM, Eddie Sutton <edsut...@gmail.com> wrote:
>> Currently I save QSettings in closeEvent.
>>
>> On Android this event is not raised when user presses that Android square
>> icon, then swipes app window to close.
>>
>> How do I handle saving work user may have been editing?
>>
>> -Ed
>
> Hi Ed,
> Look at QGuiApplication::applicationStateChanged signal.
> When your app transits from
> Qt::ApplicationActive to anything else (Qt::ApplicationSuspended or
> Qt::ApplicationInactive),
> it's worth to save everything; next user can swipe it out.
>
> It looks to be a rather cross-platform way,
> and it may work for iOS as well.
>
> Take care!
>
> Regards,
> Robert
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