[Jean-Marc]

Hi, for a game in Felgo 3, how do you hide the system navigation bar on Android at the same time as the status bar? Because I tried a lot of tricks but only the status bar is hidden, and nothing does to hide the Android navigation bar!

[AlexFelgo Team]

Hi Jean-Marc,

did you try messing around with the Android window flags, similar to this: https://stackoverflow.com/questions/25340593/issue-with-fullscreen-mode-in-android-with-qt-5-3-1/59469941#59469941

There is also an older post in our forums on this topic, that should still apply mostly: https://felgo.com/developers/forums/t/android-fullscreen-support

There is a chance that those flags are overwritten though, in that case you should migrate the game to Felgo 4 and make use of the new custom status bar style, which does not apply any own flags and gives you full control over the Android window flags: https://felgo.com/doc/felgo-themecolors/#statusBarStyle-prop

Best,
Alex

[Jean-Marc]

Thank you Alex,

I tried different things but nothing is working and the Android nav bar is still visible…

It’s surprising that there haven’t been any solutions with Felgo since time and knowing that it’s still an essential feature for games…  😔

Last week I tried to migrate to Felgo 4 but I didn’t manage to get my game working, something causes the game to crash but I didn’t find what it is! So I gave up trying to migrate!

In my java file (in my project folder /android/src) I added a new QtActivity with

onCreate(Bundle savedInstanceState)

and

onWindowFocusChanged(boolean hasFocus)

 

and these flags:

View.SYSTEM_UI_FLAG_LAYOUT_STABLE

                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION

                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN

                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION

                | View.SYSTEM_UI_FLAG_FULLSCREEN

                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;

 

I didn’t forget to add this new activity in <activity> in AndroidManifest.xml
Everything compiles correctly.
Do I have to set something else in my GameWindow object (Main.qml) ?

 

[Jean-Marc]

Alex, I’ve finally managed to make it work!!!! 🎉

I’ll post here the solution tomorrow, after a few cleanings in my code!

But you were right the code here:

https://stackoverflow.com/questions/25340593/issue-with-fullscreen-mode-in-android-with-qt-5-3-1/59469941#59469941

is good but the key is where to put it to avoid flags to be overwritten ^^

[Jean-Marc]

Alex, there is still a question: in fact it works, as I said just before, but if I put the game in the background and I “resume” the game, the nav bar is displayed again…
So, since I’m just using the code:
QtAndroid::runOnAndroidThread([=]() { … }
in main.cpp and I do not use a custom Activity (so no .java in the Android folder of the project), how to make an “onResumed” from main.cpp to relaunch the necessary code?

[AlexFelgo Team]

Hi Jean-Marc,

if you just use C++, it would be best to make a small helper class and expose it to QML, to call it on https://felgo.com/doc/felgo-app/#applicationResumed-signal

Probably would also make sense to call it after a slight delay, just to be sure.

Best,
Alex