Conditions:

1. Username EditText
2. Email EditText
3. Password EditText
4. Confirm Password EditText
5. “Proceed” Button

Task:

Implement effective interactive validation for input data.

Solution:

Serial input of text data by a user can be considered as a data stream and processed with the help of related instruments — Asynchronous Stream SDKs.

There are some benefits of processing data as Asynchronous Stream:

• Absence of callback hell
• Ability to combine last emitted items without adding last_Item variable
• Most Asynchronous Stream SDKs have rich API for dealing with a wide range of tasks of combining data streams.

The task can be implemented with the help of the next Asynchronous…