https://github.com/codenameone/CodenameOne/issues/3281
Il giorno sabato 3 ottobre 2020 alle 06:53:07 UTC+2 Shai Almog ha scritto:
> I have no idea. If you have a reproducible problem you can extract to a
> test case I can run please file an issue and embed the test case in the
> issue.
> I'll have a look.
> On Thursday, October 1, 2020 at 11:28:43 AM UTC+3 P5music wrote:
>
>> Sorry, but the problem arises only when the app starts in portrait mode,
>> and then an orientation change occurs.
>> However, even if the problem does not arise when starting in landscape
>> mode,
>> layout is set as TableLayout at startup in both cases (or even set every
>> time the method above is called, in a different version).
>> And whatever instruction I add to set the layout it is not changed, it
>> stays BorderLayout.
>> Overriding setLayout shows that nothing strange is happening, but the
>> layout is not set.
>> What is going on with that form?
>>
>>
>> Il giorno giovedì 1 ottobre 2020 alle 05:07:45 UTC+2 Shai Almog ha
>> scritto:
>>
>>> So this must be the problem.
>>> I guess border layout is what you use when in landscape and you don't
>>> update it when moving to portrait. It's hard to tell but you can just
>>> override form.setLayout() with a call to super. Then place a breakpoint
>>> there to see who invokes it.
>>> On Wednesday, September 30, 2020 at 11:19:39 AM UTC+3 P5music wrote:
>>>
>>>> Forget the "not relevant" part, because conditions are not satisfied
>>>> for it to be executed.
>>>>
>>>> What I experience is that
>>>> when the app starts in landscape mode (simulator was intentionally left
>>>> in that state)
>>>> the user interface correctly displays just the master container at full
>>>> screen (so the detail container is not added yet)
>>>> if I juggle with orientation changes the two modes correctly alternate
>>>>
>>>> but the app starts in portrait mode (simulator was intentionally left
>>>> in that state)
>>>> when an orientation change occurs
>>>> and now the simulator is in landscape mode
>>>> (containers are removed)
>>>>
>>>> I see that the master detail TableLayout is not working because just
>>>> the master container is at full screen.
>>>> if I juggle with orientation changes nothing changes.
>>>> Debug shows that the right code is executed at orientation change, that
>>>> is
>>>> if(isTablet() && !isPortrait() )
>>>> {
>>>> ...
>>>> }
>>>>
>>>> If I step into, I see that mainForm has BorderLayout and not
>>>> TableLayout:
>>>> CallingForm[x=0 y=0 width=2048 height=1534 name=null, layout =
>>>> BorderLayout, scrollableX = false, scrollableY = false, components =
>>>> [Container, Toolbar], title = Label[x=0 y=47 width=1536 height=0
>>>> name=null,
>>>> text = , gap = 2], visible = true]
>>>>
>>>> but at startup this is executed (I tried also executing it every time,
>>>> see commented lines)
>>>> tl=new TableLayout(1,2);
>>>> mainForm.setLayout(tl);
>>>> mainForm.setScrollable(false);
>>>>
>>>> I see also
>>>> Exception in thread "AWT-EventQueue-0" Failed to get location on
>>>> screen:component must be showing on the screen to determine its location
>>>> in the console after the execution of the method.
>>>>
>>>> Il giorno mercoledì 30 settembre 2020 alle 05:23:37 UTC+2 Shai Almog ha
>>>> scritto:
>>>>
>>>>> It's hard to tell from the code. The "not relevant here" code looks
>>>>> very suspicious though.
>>>>>
>>>>> Did you try just stepping over this in the debugger with the
>>>>> simulator?
>>>>> I assume you reproduced it there so just step over the lines and see
>>>>> what's going on. Are the components physically added but not visible?
>>>>> Are they added to the wrong location or not sized correctly?
>>>>>
>>>>> On Tuesday, September 29, 2020 at 12:07:50 PM UTC+3 P5music wrote:
>>>>>
>>>>>> My codename app has master/detail layout.
>>>>>> A TableLayout is used for that, in landscape mode.
>>>>>> It is used also in portrait mode with different proportions.
>>>>>>
>>>>>> If the app starts in landscape mode, the master and the detail are
>>>>>> visible, and subsequent orientation changes are handled correctly and
>>>>>> the
>>>>>> user interface is succesfully reconstructed.
>>>>>>
>>>>>> If the app starts in portrait mode, only the master is visible by
>>>>>> design (that's OK) but after the orientation change the user interface
>>>>>> is
>>>>>> not reconstructed completely
>>>>>> because
>>>>>> the master is just at full size, while the detail is not
>>>>>> reconstructed.
>>>>>>
>>>>>> This is the code of a method that is called at startup and when
>>>>>> orientation changes:
>>>>>>
>>>>>> private void setContainers()
>>>>>> {
>>>>>> mainEditingContainer.remove();
>>>>>>
>>>>>> //these lines are to handle fab correctly
>>>>>> if (fabBoundContainer!=null) fabBoundContainer.remove();
>>>>>> if (fabFirstTime)
>>>>>> {fabBoundContainer=fab.bindFabToContainer(itemListContainer);}
>>>>>>
>>>>>>
>>>>>> //mainForm.setLayout(BoxLayout.x()); not useful to reset the
>>>>>> TableLayout
>>>>>>
>>>>>> //the issue is present also without these revalidations
>>>>>> mainEditingContainer.revalidate();
>>>>>> editingContainer.revalidate();
>>>>>> fabBoundContainer.revalidate();
>>>>>> mainForm.revalidate();
>>>>>>
>>>>>> if (isPortrait() && conditions) //not relevant here
>>>>>> {
>>>>>> new
>>>>>> EditingForm(appData,myData,mainForm,editingContainer,other
>>>>>> parameters).show();
>>>>>> }
>>>>>>
>>>>>> if (isPortrait() && !(conditions)) { // only the master in this
>>>>>> mode
>>>>>> //tl=new TableLayout(1,2); not useful
>>>>>> //mainForm.setLayout(tl); not useful
>>>>>>
>>>>>>
>>>>>> mainForm.add(tl.createConstraint().heightPercentage(100).widthPercentage((int)
>>>>>>
>>>>>> (1 * 100)), fabBoundContainer);
>>>>>> }
>>>>>>
>>>>>> if(isTablet() && !isPortrait() ) { //master-detail in
>>>>>> landscape mode
>>>>>> //tl=new TableLayout(1,2); not useful
>>>>>> //mainForm.setLayout(tl); not useful
>>>>>>
>>>>>>
>>>>>> mainForm.add(tl.createConstraint().heightPercentage(100).widthPercentage((int)
>>>>>>
>>>>>> (leftContainerRatio * 100)),
>>>>>> fabBoundContainer).add(mainEditingContainer);
>>>>>> }
>>>>>>
>>>>>> mainEditingContainer.revalidate();
>>>>>> editingContainer.revalidate();
>>>>>> fabBoundContainer.revalidate();
>>>>>> mainForm.revalidate();
>>>>>>
>>>>>> if (fabFirstTime) fabFirstTime=false;
>>>>>> }
>>>>>>
>>>>>> Some commented lines are with some tentative workaround but not
>>>>>> successful.
>>>>>>
>>>>>> What's wrong? How can I achieve the complete reconstruction of UI in
>>>>>> landscape mode, when the app is started in portrait and then rotates?
>>>>>> I remind you that if the app starts in landscape mode, there are no
>>>>>> issues at any subsequent device rotation (just a BrowserComponent is not
>>>>>> resizing, this will be addressed separately).
>>>>>> Thanks in avance
>>>>>>
>>>>>>
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