Top 100 Android Interview Questions

Top 100 Android Interview Questions 

Interviews become unnerving at times. But, in spite of whatever one thinks about it, you still have to go through it in order to get the job to leverage your geniuses and earn the income to fulfil your life goals. This Top 100 Android Interview Questions you can practice to keep interview nerves at bay and ace your Android interview. It is recommended to you that in the process of preparation, go through this question and practice before each of your interviews to remind yourself of them.

Why Android?

Google announces more than 2 billion monthly active devices on Android. For any developer looking to maximize their potential users, regardless of language or country, Android is an obvious choice. One of the android’s obvious differences has been it’s lack of exclusivity to one device. The operating system is designed to be open, free and versatile.

The operating system can be used on a wide range of hardware with varying screen sizes and button arrangements. so to meet the demands google play store is the biggest marketplace for mobile apps. there are millions of downloads happening on a daily basis. This gives a future-ready market for any mobile application that is offered there.

Top 100 Android Interview questions.

  1. What are the code names of android?
  2. What are the advantages of Android?
  3. Does android support other languages than Java?
  4. What are the core building blocks of android?
  5. What is activity?
  6. What are the life cycle methods of android activity?
  7. What is the intent?
  8. What is implicit intent in android?
  9. How to call another activity in android?
  10. What is service in android?
  11. What is the name of the database used in android?
  12. What is AAPT?
  13. What is content provider?
  14. What is fragment?
  15. What is ADB?
  16. What is NDK?
  17. What is ANR?
  18. What is DDMS?
  19. What is android architecture?
  20. Name some exceptions in android?
  21. What are the basic tools used to develop an android app?
  22. Explain in brief about the important file create new android application?
  23. Explain androidmanifest.xml file in details?
  24. Describe android activities in brief?
  25. Describe intents in details?
  26. How to send sms in android? Explain with example
  27. Describe the smsmanager class in android?
  28. How you can use builtin messaging within your application?
  29. Describe shared preference storage option with example?
  30. What ae the key components of android architecture?
  31. What are the advantages of having an emulator within the android environment?
  32. Tell us something about activity creator?
  33. What do you know about intents?
  34. What is an explicit intent?
  35. What is an implicit intent?
  36. What do intent filters do?
  37. Where are layout details placed? Why?
  38. What do containers hold?
  39. What is orientations?
  40. What is it important to set permissions in app development?
  41. What is AIDL?
  42. What data types are supported by AIDL?
  43. What is nine-patch image?
  44. Which dialogue boxes are supported by Android?
  45. What is Dalvik virtual machine?
  46. What are the steps that are involved in converting the android in the newer version?
  47. What is the role of compatibility that is used in android?
  48. What are the different forms of communication provided by the android applications?
  49. What are the multimedia features involved in making android popular?
  50. What are the services that can be allowed to run in a single process?
  51. What are the steps that are required in service lifecycle?
  52. What are the different modes of operations used in service for Android?
  53. What is the main reason of using process lifecycle in android?
  54. How all the activities that are running run in the main thread?
  55. What are the different data types used by android?
  56. What are the different approaches that are required to share the objects?
  57. What are the approaches required to share persistent user defined objects?
  58. What is the procedure to check the status of an activity in android?
  59. How can two Android applications share same Linux user ID and share same VM?
  60. What are the security measures that are taken to make android secure?
  61. Which are the different stages that are required to create reusable user interface that include the layout What is difference between serializable and parcelable? Which is the best approach in android?
  62. What are the methods to avoid memory leaks in android?
  63. What are the steps required to avoid context-related memory leaks?
  64. What are the steps required in setting up the linkify calls intent?
  65. Which scenario can test only on real devices but not on emulator?
  66. Name the mobile automation tools that are available in the market?
  67. How do you troubleshoot android application which is crashing frequently?
  68. What is DDMS?
  69. Explain sensors in android?
  70. Why bytecode cannot be run in android?
  71. What is a buildtype in gradle? And what can you use it for
  72. What is the difference between oncreate() and onstart()?
  73. Scenario in which only ondestroy is called for an activity without onpause() and onstop()
  74. Why would you do the setcontentview() in oncreate() of activity class?
  75. Launch modes in android?
  76. How to prevent the data from reloading and resetting when the screen is rotated?
  77. Difference between asynctasks & threads?
  78. What are handlers?
  79. What is a job scheduling?
  80. What is the ontrimmemory() method?
  81. Android bound service?
  82. AIDL vs messenger queue?
  83. Difference between serializable and parcelable?
  84. What is a threadpool? And is it more effective than using several separate threads?
  85. How would you update the UI of an activity from a background service?
  86. What is the difference between fragments and activities?
  87. Explain the relationship between the fragments & activites?
  88. Difference between adding/replacing fragment in backstacks?
  89. What is toast in android?
  90. Difference between margin & padding?
  91. What is the difference between a regular .png and a mine patch images?
  92. How to support different screen sizes?
  93. Outline the process of creating custom views?
  94. Why can’t you run standard Java bytecode in android?
  95. Can android application only be programmed in java?
  96. Enumerate three key loops when monitoring an activity?
  97. Name the resource that is a compiled visual resource and can be used as a background title or in other parts of the screen?
  98. Can you deploy executable JARs on android? Which packaging is supported by android?
  99. How will you pass data to sub-activities?
  100. Why can’t you run standard Java bytecode on android?



Closing Notes

Great!!, finally you made it to the end of the article… Wish you all the best for your Android  Interview! We hope now you can crack any tough nut, Practice these question by taking a MOCK INTERVIEW FOR FREE

Knowledge is of no value unless you put it into practice.