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


Implement effective interactive validation for input data.


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…


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