Question-51. What are the core building blocks of android ?
Answer- The core building blocks of android are:
o Activity o View o Intent o Service o Content Provider o Fragment etc.
Question-52. What are the life cycle methods of android activity ?
Answer- There are 7 life-cycle methods of activity. They are as follows:
1. onCreate() 2. onStart() 3. onResume() 4. onPause() 5. onStop() 6. onRestart() 7. onDestroy()
Question-53. What is AAPT ?
Answer- AAPT is an acronym for android asset packaging tool. It handles the packaging process.
Question-54. What is content provider ?
Answer- Content providers are used to share information between android applications.
Question-55. What is fragment ?
Answer- Fragment is a part of Activity. By the help of fragments, we can display multiple screens on one activity.
Question-56. What is the Google Android SDK ?
Answer- The Google Android SDK is a toolset which is used by developers to write apps on Android enabled devices. It contains a graphical interface that emulates an Android driven handheld environment and allow them to test and debug their codes.
Question-57. What is nine-patch images tool in Android ?
Answer- We can change bitmap images in nine sections as four corners, four edges and an axis.
Question-58. What is application Widgets in Android ?
Answer- Application widgets are miniature application views that can be embedded in other applications and receive periodic updates.
Question-59. What is singleton class in Android ?
Answer- A singleton class is a class which can create only an object that can be shared all other classes.
Question-60. What do you mean by a drawable folder in Android ?
Answer- In Android, a drawable folder is compiled visual resource that can use as a backgrounds, banners, icons, splash screen etc.