B4J Question SOLVED: Basic Buttons on RPi Server

lip · Jan 28, 2017

I have a very basic text HTML page which I use to monitor and debug my nonUI Raspberry Pi app.

I can pass parameters to it in the url and handle them.

I can also create a Button that appears on my page.

How do I persuade the button to do something?

I started looking through the Server Example which I can see does this. I can see the Handler in Guess, but where is the button defined?

I have searched the forum for 'Button' but struggled to find anything.

Thanks

derez · Jan 28, 2017

The attached file, index.html, is in the www directory, each button's function has its handler in the server.

lip · Jan 31, 2017

Thanks - I had not spotted index.html

Forgive me, I have spent years on B4A but only just started B4J and have absolutely no clue about servers or HTML or webpages yet!!!

I have not created any ***.html files in my project. I have just created Handler Classes and used resp.write to put information onto the pages.

So I cannot really create buttons directly in B4J. I need to create a ****.html file with the buttons?

derez · Jan 31, 2017

The zip file contains the index.html file.
You should read the tutorials about server by b4j, start with this https://www.b4x.com/android/forum/threads/server-building-web-servers-with-b4j.37172/

The only way to have buttons is by putting them in the web page that you get from the server because the server itself is a non-UI application and can't have user interface.

lip · Feb 6, 2017

SOLVED: This was what I was looking for:-
Resp.Write("<a href='http://" & Main.myLocalIP & ":8888/CommandLog'><button type=button>CommandLog</button></a>")

B4J Question SOLVED: Basic Buttons on RPi Server

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