Android Question [Solved]Is there the example about coding app using API addition for studying?

[Theera]

I found a Slip transferring bank API, but I don't know to learn coding about API by B4X.
Is there the examplefor studying?
How different between the library and API?

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[Erel]

There are many examples of interacting with REST apis using OkHttpUtils2. The actual details depend on the specific API requirements.