Android Question NightMode for B4XPAGES.

[netsistemas]

Whats is the best thenic for view o design o change, the layout to NightMode.

I can change all layout to Black (background) an white (Ink/Foreground), instead white (background) and grayed buttons.

I need this for B4A and B4J (B4X).

(I go to find, too, change backcolor in b4xpages)

No change nightmode for phone, only in view for my app (easy and fast, and for new layouts, may be, set defaults color in b4x designer).

 

[TILogistic]

This is what you are looking for??
Custom theme:

B4A:

Changing the theme at runtime

Using the hooks feature it is possible to change the Activity theme at runtime. The theme is set before the activity is actually shown. This means that in order to change the theme we need to destroy the activity and start it again. You can use StateManager to save the activity state. The...

www.b4x.com

XmlLayoutBuilder - Load Xml layouts

Edit: this tutorial was written before CreateResouce keyword was available. Simpler usage example: https://www.b4x.com/android/forum/threads/make-edittext-cursor-more-visible.114148/ The standard way to build the UI in Basic4android is with the visual designer / designer script. You can also...

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or

Theme Colors

Edge to edge example: https://www.b4x.com/android/forum/threads/actionbar-and-statusbar-colors-programmatically-with-edge-to-edge.171763/ Changing the action bar, status bar and navigation bar colors is done with resources set in the manifest editor. The manifest code...

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B4J:

JFX Style

[JavaFX] - Metro Style CSS

Hello, I will show you how to install this Metro skin in your projects. It is a JavaFX css style that allows you to modify the controls, giving it a metro effect. I use JMetro CSS files from: https://github.com/JFXtras/jfxtras-styles/tree/master/jmetro/src/main/resources/jfxtras/styles/jmetro...

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Metro Style with JMetro

1. Download jmetro-4.0.jar and copy it to the additional libraries folder. https://github.com/JFXtras/jfxtras-styles/releases 2. Add reference to the jar: #AdditionalJar: jmetro-4.0 3. Apply the theme: Dim jo As JavaObject jo.InitializeNewInstance("jfxtras.styles.jmetro8.JMetro"...

www.b4x.com

 

[Erel]

This is relevant: https://www.b4x.com/android/forum/threads/best-practice-for-android-dark-theme.109667/post-684932 though combining B4XPages with AppCompat themes can be problematic.

 

[netsistemas]

Acording to last message from Erel: (no error, but no work)
1. reference appcompat
2. Add code to manifest:

CreateResource(values, theme.xml,
<resources>
    <style name="MyAppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
    </style>
</resources>
)

3º include function in Main (proyect B4XPage)

Sub SetDefaultNightMode (Mode As Int)
    Dim jo As JavaObject
    jo.InitializeStatic("androidx.appcompat.app.AppCompatDelegate").RunMethod("setDefaultNightMode", Array(Mode))
End Sub

4º Execute funciton from activity_create (is correct?)

Sub Activity_Create(FirstTime As Boolean)
    SetDefaultNightMode(1) '2 no ok
    ...

But not work.

 

[angel_]

Maybe add this:

#Extends: android.support.v7.app.AppCompatActivity

 

[netsistemas]

No, i added this to #region Proyect attributes (main) and the app no open.

#Region  Project Attributes
    #ApplicationLabel: Aplicacion DEMO RAV
    #VersionCode: 1
    #VersionName:
    'SupportedOrientations possible values: unspecified, landscape or portrait.
    #SupportedOrientations: portrait
    #CanInstallToExternalStorage: False
    #Extends: android.support.v7.app.AppCompatActivity
    
    #if b4j
        #AdditionalJar: mssql-jdbc-8.4.1.jre11
        
    #else
        #AdditionalJar: jtds-1.3.1.jar
    #end if
    
#End Region

 

[Erel]

Check the logs. There must be an error message there.

 

[netsistemas]

there are not message in any case.
No with #extendes clausule (no run app)
No with out clausule

Some mini sample? please?

 

[stevel05]

Are you running the app in Debug mode?

 

[netsistemas]

yes,
both of them: debug and release
this has to be easier than it seems .
Something basic in b4x I have not learned about 'THEMES'.