Android Developer Interview Questions

10,458 android developer interview questions shared by candidates

Esta me la pasó por escrito a través del chat: Can you explain how a mobile app should interact with a backend when performing operations that must be idempotent (e.g., sending a payment or submitting a form)? Please include how idempotency keys are generated, stored, and reused across retries.
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Android Developer

Interviewed at Revolut

4
Sep 11, 2025

Esta me la pasó por escrito a través del chat: Can you explain how a mobile app should interact with a backend when performing operations that must be idempotent (e.g., sending a payment or submitting a form)? Please include how idempotency keys are generated, stored, and reused across retries.

They asked me to walk them through the single most important question I was given during the entire process. They wanted to know exactly what the question was, why it mattered, how I approached it, and what my thinking looked like as I worked through it. In other words, they were trying to understand not only the content of the question but also the way I reasoned about it and explained my thought process.
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Android Engineer

Interviewed at Kredivo Group

4.3
Nov 22, 2025

They asked me to walk them through the single most important question I was given during the entire process. They wanted to know exactly what the question was, why it mattered, how I approached it, and what my thinking looked like as I worked through it. In other words, they were trying to understand not only the content of the question but also the way I reasoned about it and explained my thought process.

How two services communicate with each other.,...? How can we allow the database of your application to grant access to only some applications . Not for all how will you restrict. Can we load data to CursorLoader with out having URI.
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Android Applications Developer

Interviewed at Samsung R&D Institute India - Noida

3.2
Oct 15, 2015

How two services communicate with each other.,...? How can we allow the database of your application to grant access to only some applications . Not for all how will you restrict. Can we load data to CursorLoader with out having URI.

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