B4J Question Waveform Graph From an Audio Files (2)

[khwarizmi]

Hi all

In addition to my previous question, I would like to know how to draw a waveform graph for a specific audio file. In the previous question, the answer given to me was to draw a wave that is not related to an audio file.
I found good solutions like this on B4A, but I couldn't convert them to B4J.

Thanks in advance.

 

[MarcoRome]

Same class, in B4J put a Pane

Private lblC As Pane

 

[khwarizmi]

This is my attempt, there are a number of bugs other than pane:

 

[MarcoRome]

Here test #2

 

[khwarizmi]

Thanks MarcoRome
But I want the waveform for an audio file, as in this example:

Audio Visualizer

This demo does not implement the RuntimePermissions required for Android 6+ (that's how old it is). You will need to add RuntimePermissions to the demo in order for it to run. As a response to a request on the forums, and to try out the new JavaObject functionality, I decided to take a...

www.b4x.com

 

[stevel05]

But I want the waveform for an audio file, as in this example:

That is written in B4a, it shouldn't be difficult to convert to B4j.

 

[Erel]

Tip: you should never see Pane in new code. Use B4XView instead.

 

[MarcoRome]

Tip: you should never see Pane in new code. Use B4XView instead.

I brought back Pane because if I had brought back B4xView it could be both a Label and a Pane. The label even if you declare the same as B4XView it goes into error. If instead you insert a Pane and declare the same as B4xView it is ok