During the interview process, everyone I interviewed with was super polite. On the other hand, HR was only replying once a week (Fridays), and if we needed to speak, it had to be arranged for the following week. At the end, when I couldn't pass the onsite, they didn't say anything until I asked (after 10 days).

First Phone Interview with recruiter:

• Which of these standard Java collections is fastest to use if you want to find a specific element? An unsorted Vector TreeSet A sorted LinkedList

• In which order are the Activity lifecycle methods called? onCreate, onStart, onResume onCreate, onResume, onStart onStart, onCreate, onResume

• What are Android Fragments used for? Creating a modularized UI Optimizing the garbage collector in Dalvik Loading data from multiple endpoints

• Which thread will process a Message posted to a Handler? The UI thread The thread that created the Handler The thread that created the Message

• Which thread executes the Service onCreate method? The UI thread A background thread The thread specified in the intent

• Is the IntentService destroyed after handling all queued intents? Yes No

• When will the system call a Service onDestroy method? When it’s explicitly stopped, regardless of any existing bindings Only when the system needs the memory When it’s in a stopped state and no bindings exist

• If the UI thread is idle, and a background thread is busy-looping, when will the system display an Application Not Responding message? After 5 seconds After 10 seconds Never

• Which of the following apps does Android consider most important to keep alive? A hidden app with a started service A visible app without any services A hidden app without any services

Skype Interview: Some Android and computer science questions, code review, hands-on coding

• What is an Activity?
• What is a Fragment?
• What is a Content Provider?
• What is a Service?
• What is a bound service and a started service?
• What is an IntentService?
• What is lint?
• What are ways to pass data from activity to activity without using an Intent?
• What is a Broadcast Receiver?
• What is time complexity?
• What is the time complexity of a sorted array?
• What is the difference between ArrayList and LinkedList?
• How do you keep your code clean?
• What is polymorphism?
• What's the difference between a process and a thread?
• SOLID principles
• Which design patterns did you use in your Android project? Explain.
• A sort problem and its complexity

OnSite: Behavioral interview, white board/share and tell, system design

System design: Designing a QR code reader, search

White board: Removing duplicates without changing the order of the array and its complexity