B4J Code Snippet 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", Array("LIGHT")) 'or DARK
Dim jform As JavaObject = MainForm
jo.RunMethod("applyTheme", Array(jform.GetField("scene")))

Before

After

Make sure to test it carefully as the theme changes some of the style attributes that are set by the designer.

 

[Mashiane]

In other news, people are busy hey... https://github.com/aalmiray/bootstrapfx/

Interesting...

 

[ivanomonti]

I'm trying version 11.6.9 and it gives me error in the string applyTheme as method not found, I was wondering if this updated version you could use.

 

[Erel]

Check this: https://www.b4x.com/android/forum/threads/javafx-metro-style-css.114932/

 

[androh]

Updated code for new jMetro version:

#AdditionalJar: jmetro-11.6.14.jar

Dim jo As JavaObject
Dim jform As JavaObject = MainForm
jo.InitializeNewInstance("jfxtras.styles.jmetro.JMetro", Array(jform.GetField("scene"), "LIGHT")) 'or DARK
jo.RunMethod("reApplyTheme", Null)

 

[Rubsanpe]

Hi, When I try to use this code in a B4XPage project I get an error.

Waiting for debugger to connect...
Program started.
*** mainpage: B4XPage_Appear
*** mainpage: B4XPage_Resize [mainpage]
*** b4xpage_rss: B4XPage_Created [mainpage]
Error occurred on line: 70 (B4XPage_RSS)
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at anywheresoftware.b4a.keywords.Common.CallSubDebug2(Common.java:487)
    at b4j.example.b4xpagesmanager._createpageifneeded(b4xpagesmanager.java:878)
    at b4j.example.b4xpagesmanager._showpage(b4xpagesmanager.java:357)
    at b4j.example.b4xpages._showpage(b4xpages.java:71)
    at b4j.example.b4xmainpage._rss_click(b4xmainpage.java:184)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:629)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:237)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:167)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:111)
    at anywheresoftware.b4a.shell.ShellBA.raiseEvent2(ShellBA.java:100)
    at anywheresoftware.b4a.BA$1.run(BA.java:236)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:428)
    at java.base/java.security.AccessController.doPrivileged(Native Method)
    at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:427)
    at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
    at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:174)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:134)
    at anywheresoftware.b4a.debug.Debug.CallSubNew2(Debug.java:81)
    ... 30 more
Caused by: java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:115)
    ... 31 more
Caused by: java.lang.RuntimeException: Field: scene not found in: javafx.scene.layout.AnchorPane
    at anywheresoftware.b4j.object.JavaObject$FieldCache.getField(JavaObject.java:307)
    at anywheresoftware.b4j.object.JavaObject.GetField(JavaObject.java:182)
    at b4j.example.b4xpage_rss._b4xpage_created(b4xpage_rss.java:161)
    ... 36 more

The same error occurs with the other foron examples when I try to use it in B4XPages. Any solutions or examples that work?

Thank you

Rubén

 

[Erel]

Change this line:

Dim jform As JavaObject = MainForm

With:

Dim jform As JavaObject = B4XPages.GetNativeParent(Me)

 

[Rubsanpe]

Thank you Erel. It works perfect now.

Rubén