Android Question application title

Zeev Goldstein · Oct 20, 2018

hello,
first thing when i run my app it shows the application title
how can i hide it ?

thanks

Ohanian · Oct 20, 2018

Hi,

B4X:

#Region  Activity Attributes 
    #FullScreen: False
    #IncludeTitle: False '<<<<<<< Hides the app title
#End Region

Zeev Goldstein · Oct 20, 2018

Ohanian said:

Hi,

B4X:

#Region  Activity Attributes
    #FullScreen: False
    #IncludeTitle: False '<<<<<<< Hides the app title
#End Region

thanks,
this exactly what i use but the application title is shown when i run the app
if i just remove the title it will show b4a example

the problem is with new devicesand the notch - it shows the title on first row so it is half shown and half hidden by notch

so if i can set the location of the title is also good but i rather hide it

Semen Matusovskiy · Oct 20, 2018

Take a look Erel's sample https://www.b4x.com/android/forum/attachments/appcompatexample-zip.56248/
Open Visual Designer. Remove checkmark for Visible property of ACToolBarLight1 and run.
The same you can do in run-time (visible = true / false)

Probably, you are interesting in immersive mode. If you will search forum, you will find Erel's sample. Personally I add to activity a code bellow.
In my app I build a layout in Activity_Resume event:

B4X:

#If Java

    import android.os.Build;
    import android.view.View;
    import android.view.Window;
    import android.view.WindowManager;

public void _onResume () {
    View decorView = getWindow ().getDecorView ();
    int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
    if (Build.VERSION.SDK_INT >= 19) { flags = flags | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY; };
    decorView.setSystemUiVisibility (flags);
    getWindow ().addFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN);
}

#End IF

Erel · Oct 21, 2018

Semen Matusovskiy said:
Probably, you are interesting in immersive mode. If you will search forum, you will find Erel's sample. Personally I add to activity following:

You are making recommendations that will not work properly.
Correct way to set immersive mode: Immersive Mode - hide the navigation bar

Using full screen theme: https://www.b4x.com/android/forum/threads/full-screen-theme.93892/#content

Zeev Goldstein · Oct 21, 2018

Semen Matusovskiy said:
Take a look Erel's sample https://www.b4x.com/android/forum/attachments/appcompatexample-zip.56248/
Open Visual Designer. Remove checkmark for Visible property of ACToolBarLight1 and run.
The same you can do in run-time (visible = true / false)

Probably, you are interesting in immersive mode. If you will search forum, you will find Erel's sample. Personally I add to activity following:

B4X:

#If Java import android.os.Build; import android.view.View; import android.view.Window; import android.view.WindowManager; public void _onCreate () { View decorView = getWindow ().getDecorView (); int flags = View.SYSTEM_UI_FLAG_LAYOUT_STABLE | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION; if (Build.VERSION.SDK_INT >= 19) { flags = flags | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY; }; decorView.setSystemUiVisibility (flags); getWindow ().addFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN); } #End IF

Yippee ki-yay !!
THANK YOU !

Your referral to Erel's sample was the thing I was looking for
This completely solved my problem
Once again – thank you so much…

Now if I may – there is another issue I have –
When I launch the app it takes some time to see the first form I load
I load it immediately in activity_create
There is no delay or any kind of internal processing but it takes some time to get the form on screen
And it is a very simple form with one label and one button only
Once it is shown all the rest is flying smoothly only the initial phase somehow takes time

Any ideas ?

Zeev Goldstein · Oct 21, 2018

Erel said:
You are making recommendations that will not work properly.
Correct way to set immersive mode: Immersive Mode - hide the navigation bar

Using full screen theme: https://www.b4x.com/android/forum/threads/full-screen-theme.93892/#content

thanks Erel,
but i don't want to use fullscreen
the solution i got based on your sample is PERFECT for me

Semen Matusovskiy · Oct 21, 2018

Now if I may – there is another issue I have –
When I launch the app it takes some time to see the first form I load
I load it immediately in activity_create
There is no delay or any kind of internal processing but it takes some time to get the form on screen
And it is a very simple form with one label and one button only
Once it is shown all the rest is flying smoothly only the initial phase somehow takes time

1) You need to start another topic.
2) There is general explanation https://developer.android.com/topic/performance/vitals/launch-time and a lot of articles with advices. But I did not see magic recomendations - mostly reduce resources and etc.
Like smartphone user I can say that if you have a good CPU and memory, all starts quickly. For example my program includes 30-40 activities, the size of apk is about 5MB. The start time on my OnePlus 5t is much less than 1 sec.

How do you measure startup time ? How long starts B4A Bridge is one question and how long starts a Launcher is another.

Zeev Goldstein · Oct 22, 2018

Semen Matusovskiy said:
1) You need to start another topic.
2) There is general explanation https://developer.android.com/topic/performance/vitals/launch-time and a lot of articles with advices. But I did not see magic recomendations - mostly reduce resources and etc.
Like smartphone user I can say that if you have a good CPU and memory, all starts quickly. For example my program includes 30-40 activities, the size of apk is about 5MB. The start time on my OnePlus 5t is much less than 1 sec.

How do you measure startup time ? How long starts B4A Bridge is one question and how long starts a Launcher is another.

thanks.
speed testing i do only on release version so bridge is not involved.
i install it and then run it as normal from the launcher.
i try it on a few different devices on ZUK Z1, Huawei MATE 9 & POCOPHONE
i measure speed very simple - i tap on the icon and see how fast (or slow) it takes until i get the app on screen
in your link i saw that a cold run may take up to 5 seconds - in my opinion it is very long
i test only on cold as on hot it comes immediatelly.
my app takes approx 3 seconds to load and i think it is slow
my app size is almost 16MB... (apk size)

Semen Matusovskiy · Oct 22, 2018

I agree that 3 seconds is a long period. 16 MB - so large code or a lot of pictures ?
Unfortunatelly, Android is not a Windows, where it's enough simple to reduce start time - for example, using dynamic DLL.

Probably you need to read articles with advices. Alone problem that many recommendations are directly relative to Android Studio.

Zeev Goldstein · Oct 22, 2018

Thanks
I did check other apps, seems some are fast and some are even slower to load.
There are a few pics but tiny more of icons etc...

Thanks for your help

Android Question application title

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