Google Associate-Android-Developer Associate Android Developer Exam Exam Practice Test Questions

• Question 1

  Select a correct statement about PagedList.

  • PagedList is content-mutable. This means that new content can be loaded into an instance of PagedList and the loaded items themselves can change once loaded.
    
  • PagedList is content-immutable. This means that, although new content can be loaded into an instance of PagedList, the loaded items themselves cannot change once loaded.
    
  • PagedList is content-accidental. This means that new content can be loaded into an instance of PagedList and the loaded items themselves can be changed to accidental values randomly.
    

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• Question 2

  ''Set the activity content to an explicit view. This view is placed directly into the activity's view hierarchy. It can itself be a complex view hierarchy.'' This can be done by calling method:

  • findViewById
    
  • setContentView
    
  • setActionBar
    
  • setContentTransitionManager
    
  • setTheme
    

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• Question 3

  For example, we have a file in our raw folder app/src/main/res/raw/sample_teas.json. To get anInputStream for reading it, from out Context context, we can do this:

  • InputStream input = context.openRawResource(R.raw.sample_teas);
    
  • InputStream input = context.getRawResource(R.raw.sample_teas);
    
  • InputStream input = context.getResources().openRawResource(R.raw.sample_teas);
    

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• Question 4

  With a room database. When performing queries, you'll often want your app's UI to update automatically when the data changes. Can you use a return value of type LiveData in your query method description to achieve this?

  • Yes
    
  • No
    

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• Question 5

  @Query is the main annotation used in DAO classes. It allows you to perform read/write operations on a database. Each @Query method is verified at compile time, so what happens if there is a problem with the query?

  • a runtime error occurs instead of a compilation failure.
    
  • a compilation error occurs instead of a runtime failure.
    
  • both compilation error and runtime failure occurs.
    

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