Android Quiz: Mastering Basics of Activity, Fragment, Intent, Views, RecyclerViews and More!

Dive into the world of Android development mastery with the Android Developer Aptitude Quiz! This quiz is designed to make learning easy and enjoyable as you navigate through essential concepts. From managing Activity and Fragment lifecycles to harnessing the power of Intents, Intent filters, and the AndroidManifest.xml file, we’ll guide you through creating Views and layouts using both XML and programmatic approaches. Delve into the intricacies of the RecyclerView and the versatile Adapter pattern.

Whether you’re a seasoned developer reinforcing your skills or a budding enthusiast eager to explore Android app development, our quiz offers a user-friendly journey through fundamental topics. Uncover the nuances of Android development and elevate your aptitude effortlessly. Let the learning adventure begin!

We cover below topics in it:

Android Basics:

Activity lifecycle
Fragment lifecycle
Intent and Intent filters
AndroidManifest.xml file
Views and layouts (XML and programmatic)
RecyclerView and Adapter pattern

What is the purpose of the onSaveInstanceState method in an Android activity?

A. To save the current state of the activity before it is destroyed

B. To save data to a database.

C. To save the layout of the activity.

D. To save the activity's intent.

What is the purpose of the onBindViewHolder method in a RecyclerView.Adapter?

A. To create a new view holder.

B. To bind data to the views inside the view holder.

C. To handle item click events.

D. To update the adapter's data set.

How can you pass data between activities in Android?

A. Using shared preferences.

B. Using the startActivityForResult method.

C. Using a content provider.

D. Using an Intent with extras.

What is the purpose of the wrap_content layout parameter in Android views?

A. To set the width or height of the view to match the parent.

B. To adjust the view's content to fit its parent.

C. To make the view invisible.

D. To set a fixed size for the view.

How is a fragment added to an activity programmatically in Android?

A. Using the tag in the XML layout.

B. Using the FragmentManager to begin a transaction and add the fragment.

C. By calling the setFragment method in the activity.

D. By declaring it in the AndroidManifest.xml file.

What is the purpose of the MATCH_PARENT layout parameter in Android views?

A. To set the width or height of the view to match the parent.

B. To adjust the view's content to fit its parent.

C. To make the view invisible.

D. To set a fixed size for the view.

What is the function of the setData method in an Intent object in Android?

A. To start a new activity.

B. To specify the type of data being passed.

C. To attach data to the intent.

D. To retrieve data from an intent.

In Android, what is the primary purpose of the FLAG_ACTIVITY_CLEAR_TOP flag when starting a new activity?

A. To clear the back stack of activities.

B. To set the activity as the home activity.

C. To clear all data from the current activity.

D. To close the current activity.

What is the significance of the layout_weight attribute in Android LinearLayout?

A. It sets the weight of the layout.

B. It adjusts the size of the layout based on its content.

C. It specifies the priority of the layout.

D. It specifies the layout's visibility.

10.

How does the GONE visibility state differ from INVISIBLE in Android views?

A. GONE makes the view completely invisible, and it doesn't take up any space.

B. INVISIBLE makes the view completely invisible, but it still takes up space.

C. GONE reduces the size of the view.

D. INVISIBLE removes the view from the layout.

1 out of 5

11.

Which method is called to create a new view holder in a RecyclerView.Adapter?

A. onCreateViewHolder

B. onBindViewHolder

C. onViewHolderCreated

D. onNewViewHolder

12.

What design pattern is commonly used with a RecyclerView in Android?

A. Singleton pattern.

B. Observer pattern.

C. Adapter pattern.

D. Strategy pattern.

13.

What is the role of the RecyclerView in Android?

A. To display a single item.

B. To manage the navigation between activities.

C. To efficiently display large sets of data in a scrollable list.

D. To store data persistently.

14.

In Android, what is the purpose of the setContentView method in an Activity?

A. To set the title of the activity.

B. To set the content view of the activity by providing the layout resource ID.

C. To set the background color of the activity.

D. To set the visibility of the activity.

15.

What does the element in the AndroidManifest.xml file specify?

A. The version of Android required by the app.

B. The permissions that the app requires to access certain features or data.

C. The name of the app.

D. The orientation of the app's activities.

16.

What is an Intent in Android?

A. A class that represents an application's user interface.

B. An asynchronous task that performs background operations.

C. A message that is passed between components, such as activities and services.

D. A database for storing application data.

17.

What is the purpose of the onCreateView method in a Fragment?

A. To create the Fragment's layout.

B. To handle user clicks.

C. To destroy the Fragment.

D. To start a new activity.

18.

What is the purpose of the onCreate method in an Android activity?

A. To perform one-time initialization of the activity.

B. To handle user interactions.

C. To define the layout of the activity.

D. To receive updates from the system.

19.

Which lifecycle method is called when an activity is no longer visible to the user?

A. onStop

B. onPause

C. onDestroy

D. onHiddenChanged

20.

What is the role of the onActivityResult method in Android?

A. To handle the result of an asynchronous task.

B. To receive the result of a started activity.

C. To handle the result of a database query.

D. To handle user input events.

2 out of 5

21.

What is the purpose of the `setHasFixedSize` method in a RecyclerView in Android?

A. To fix the size of each item in the RecyclerView.

B. To specify a fixed size for the RecyclerView.

C. To optimize performance by indicating that the RecyclerView size won't change.

D. To disable the ability to add or remove items from the RecyclerView.

22.

How is data typically passed to a RecyclerView Adapter in Android?

A. By using the `setAdapterData` method.

B. By passing it as a parameter to the Adapter constructor.

C. By calling the `setData` method on the RecyclerView.

D. By declaring it in the AndroidManifest.xml file.

23.

What is the purpose of the `onStart` method in the Android activity lifecycle?

A. To perform one-time initialization of the activity.

B. To update the UI based on the current state.

C. To handle user interactions.

D. To make the activity visible to the user.

24.

How can you persist data between orientation changes in an Android activity?

A. By using the `onSaveInstanceState` method.

B. By storing data in a SQLite database.

C. By using shared preferences.

D. By saving data to a file.

25.

What is the purpose of the `onResume` method in the Android activity lifecycle?

A. To perform one-time initialization of the activity.

B. To update the UI based on the current state.

C. To handle user interactions.

D. To make the activity interactive and visible to the user.

26.

How can you create a new instance of a Fragment in Android?

A. By calling the `newInstance` method.

B. By using the `new Fragment()` constructor.

C. By declaring it in the AndroidManifest.xml file.

D. By calling the `createFragment` method.

27.

What is the purpose of the `onPause` method in the Android activity lifecycle?

A. To perform one-time initialization of the activity.

To update the UI based on the current state.

To handle user interactions.

To pause or stop ongoing actions in the activity.

28.

How is a layout defined programmatically in Android?

A. By using the `setContentView` method.

B. By calling the `createLayout` method.

C. By instantiating view classes and setting their properties.

D. By using the `android:layout` attribute in the XML layout.

29.

What is the purpose of the `onStop` method in the Android activity lifecycle?

A. To perform one-time initialization of the activity.

B. To update the UI based on the current state.

C. To handle user interactions.

D. To finalize the activity when it is no longer visible.

30.

How can you dynamically add a fragment to an activity in Android?

A. By using the `` tag in the XML layout.

B. By calling the `addFragment` method on the activity.

C. By using the `FragmentManager` to begin a transaction and add the fragment.

D. By declaring it in the AndroidManifest.xml file.

3 out of 5

31.

How does the `onDestroy` method in the Android activity lifecycle differ from `onStop`?

A. `onDestroy` is called when the activity is no longer visible and being destroyed, while `onStop` is called when the activity is no longer visible but still in memory.

B. `onStop` is called when the activity is no longer visible and being destroyed, while `onDestroy` is called when the activity is no longer visible but still in memory.

C. `onDestroy` is called when the activity is first created, while `onStop` is called when the activity is no longer visible.

D. There is no difference; they serve the same purpose.

32.

What is the purpose of the `setArguments` method in an Android Fragment?

A. To set the layout parameters for the fragment.

B. To pass data to the fragment.

C. To set the fragment's visibility.

D. To attach the fragment to an activity.

33.

How can you handle configuration changes in an Android activity, such as orientation changes?

A. By using the `onConfigurationChanged` method.

B. By setting the `configChanges` attribute in the AndroidManifest.xml file.

C. By overriding the `onOrientationChange` method.

D. By creating a separate activity for each configuration.

34.

What is the role of the `setOnClickListener` method in Android views?

A. To set the view's size.

B. To define the layout of the view.

C. To handle click events on the view.

D. To set the visibility of the view.

35.

How can you specify a custom layout for an individual item in a RecyclerView in Android?

A. By using the `layoutParams` attribute in the XML layout.

B. By setting the layout in the `onCreateViewHolder` method of the Adapter.

C. By using the `layout` attribute in the XML layout.

D. By declaring it in the AndroidManifest.xml file.

36.

What is the purpose of the `onConfigurationChanged` method in an Android activity?

A. To handle changes in the device's configuration, such as orientation changes.

B. To handle the back button press.

C. To handle the creation of the activity.

D. To handle the result of an activity.

37.

How can you handle the back button press in an Android activity?

A. By using the `onBackPressed` method.

B. By implementing the `onBackButtonPressed` method.

C. By setting the `android:parentActivityName` attribute in the AndroidManifest.xml file.

D. By using the `onKeyDown` method.

38.

What is the purpose of the `onCreateOptionsMenu` method in an Android Fragment?

A. To create a new options menu for the fragment.

B. To handle options menu item selection.

C. To handle the creation of the fragment.

D. To handle the back button press.

39.

How can you specify the layout parameters for a view in Android programmatically?

A. By using the `setLayoutParams` method and passing a `LayoutParams` object.

B. By using the `layout` attribute in the XML layout.

C. By calling the `setLayout` method on the view.

D. By setting the `layoutParams` attribute in the XML layout.

40.

What is the purpose of the `setOnItemClickListener` method in Android's AdapterView?

A. To set the item click listener for a RecyclerView.

B. To set the item click listener for a ListView or GridView

C. To set the click listener for a button.

D. To handle the item click event in a ViewPager.

4 out of 5

41.

What is the purpose of the `setHasOptionsMenu` method in an Android Fragment?

A. To create a new options menu for the fragment.

B. To enable the fragment to add items to the activity's options menu.

C. To set the visibility of the fragment's options menu.

D. To disable the options menu for the fragment.

42.

How is a click event typically handled for an item in a RecyclerView in Android?

A. By implementing the `onItemClickListener` interface.

B. By setting an `OnClickListener` on the RecyclerView itself.

C. By implementing the `onClick` method in the ViewHolder.

D. By using the `onClick` attribute in the XML layout.

43.

What is the purpose of the `onBackPressed` method in an Android activity?

A. To handle the back button press on the device.

B. To navigate to the previous activity.

C. To close the current activity.

D. To handle the back stack.

44.

How can you specify different layouts for landscape and portrait orientations in Android?

A. By creating separate layout files with the same name in different resource folders.

B. By using the `orientation` attribute in the XML layout.

C. By programmatically setting the layout parameters based on the orientation.

D. By using the `layout-land` and `layout-port` folders.

45.

What is the role of the `setLayoutManager` method in a RecyclerView in Android?

A. To set the background color of the RecyclerView.

B. To specify the layout manager for organizing items.

C. To define the layout for each item in the RecyclerView.

D. To enable or disable the layout manager.

46.

How does the `notifyDataSetChanged` method impact a RecyclerView's data set in Android?

A. It clears the data set.

B. It refreshes the entire data set, notifying the adapter of changes.

C. It adds new data to the data set.

D. It removes the last item from the data set.

47.

What is the purpose of the `onActivityCreated` method in an Android Fragment?

A. To handle the creation of the fragment.

B. To perform one-time initialization of the fragment.

C. To access the parent activity.

D. To handle activity re-creation after being destroyed.

48.

How can you specify the orientation of a LinearLayout in Android?

A. By using the `orientation` attribute in the XML layout.

B. By setting the layout orientation in the activity's code.

C. By using the `layout_orientation` attribute.

D. By specifying it in the AndroidManifest.xml file.

49.

What is the primary purpose of the `getSupportFragmentManager` method in Android?

A. To retrieve the system's fragment manager.

B. To create a new fragment manager.

C. To access the support version of the fragment manager.

D. To add a fragment to the back stack.

50.

How can you pass data from a fragment to its hosting activity in Android?

A. Using the `getArguments` method.

B. Using an Intent.

C. Using a callback interface implemented by the activity.

D. Using the `setTargetFragment` method.

5 out of 5

Android Quiz: Mastering Basics of Activity, Fragment, Intent, Views, RecyclerViews and More!

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