Android App Development Errors
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Questions and Answers

What is the name of the exception that is thrown in the code snippet?

  • CoroutineSchedulerException
  • NameNotFoundException (correct)
  • PackageManagerException
  • ApplicationPackageManagerException

What is the name of the method that is used to get the package info?

  • getPackageManager
  • getApplicationPackageManager
  • getPackageInfo
  • getPackageInfoAsUser (correct)

What is the name of the class that is used to get the device ID?

  • SamsungImpl
  • DeviceIDHelper (correct)
  • OAIDFactory
  • CoroutineScheduler

What is the name of the method that is used to check if OAID is supported?

<p>isOaidSupported (A)</p> Signup and view all the answers

What is the name of the coroutine scheduler class?

<p>CoroutineScheduler (A)</p> Signup and view all the answers

What is the name of the method that is used to start the state?

<p>startState (B)</p> Signup and view all the answers

What is the name of the class that is used to run dispatched tasks?

<p>DispatchedTask (B)</p> Signup and view all the answers

What is the name of the method that is used to resume the continuation?

<p>resumeWith (B)</p> Signup and view all the answers

What is the name of the exception thrown in the given code snippet?

<p>NameNotFoundException (B)</p> Signup and view all the answers

What is the method name in ApplicationPackageManager that is called to get package info?

<p>getPackageInfoAsUser (B)</p> Signup and view all the answers

What is the name of the class in which the isOaidSupported method is invoked?

<p>DeviceIDHelper (D)</p> Signup and view all the answers

What is the name of the coroutine scheduler class in the given code?

<p>CoroutineScheduler (D)</p> Signup and view all the answers

What is the method name in CoroutineScheduler that is called to run the task?

<p>run (D)</p> Signup and view all the answers

What is the name of the function that is called in the ApplicationPackageManager class?

<p>getPackageInfoAsUser (B)</p> Signup and view all the answers

What is the name of the method in DeviceIDHelper that is invoked to start the state?

<p>startState (C)</p> Signup and view all the answers

What is the name of the class that the isOaidSupported function is called in?

<p>DeviceIDHelper (D)</p> Signup and view all the answers

What is the name of the exception thrown in the CoroutineScheduler class?

<p>WorkerException (A)</p> Signup and view all the answers

What is the name of the coroutine scheduler class?

<p>CoroutineScheduler (C)</p> Signup and view all the answers

In which file is the CoroutineScheduler class defined?

<p>CoroutineScheduler.kt (D)</p> Signup and view all the answers

What is the name of the exception that is thrown in the PackageManager class?

<p>NameNotFoundException (B)</p> Signup and view all the answers

What is the name of the function that is called in the DeviceIDHelper class?

<p>isOaidSupported (D)</p> Signup and view all the answers

What is the name of the package that the OAIDFactory class is part of?

<p>com.sand.oaid (B)</p> Signup and view all the answers

What is the name of the function that is called in the OAIDFactory class?

<p>a (A)</p> Signup and view all the answers

What is the name of the coroutine function that is called in the CoroutineScheduler class?

<p>e (A)</p> Signup and view all the answers

What is the purpose of the CoroutineScheduler class?

<p>To schedule and manage coroutines (C)</p> Signup and view all the answers

Where is the getPackageInfo method located?

<p>In the ApplicationPackageManager class (C)</p> Signup and view all the answers

What is the purpose of the isOaidSupported method?

<p>To check if OAID is supported on the device (C)</p> Signup and view all the answers

What is the purpose of the DeviceIDHelper class?

<p>To provide OAID support (D)</p> Signup and view all the answers

What is the purpose of the startState method?

<p>To start a coroutine (D)</p> Signup and view all the answers

Where is the startState method located?

<p>In the DeviceIDHelper class (C)</p> Signup and view all the answers

What is the purpose of the OAIDFactory class?

<p>To provide OAID support (C)</p> Signup and view all the answers

Where is the isOaidSupported method located?

<p>In the DeviceIDHelper class (D)</p> Signup and view all the answers

What is the purpose of the CoroutineScheduler class?

<p>To schedule coroutines for execution (B)</p> Signup and view all the answers

Which method is used to get package information in the code snippet?

<p>getPackageInfoAsUser (A)</p> Signup and view all the answers

What is the exception that is thrown in the code snippet?

<p>NameNotFoundException (B)</p> Signup and view all the answers

What is the purpose of the isOaidSupported method?

<p>To check if OAID is supported (B)</p> Signup and view all the answers

What is the purpose of the DeviceIDHelper class?

<p>To get device information (A)</p> Signup and view all the answers

What is the purpose of the startState method?

<p>To start the state of the device (D)</p> Signup and view all the answers

What is the purpose of the dispatchTask method?

<p>To dispatch tasks (C)</p> Signup and view all the answers

What is the purpose of the kotlinx.coroutines.scheduling package?

<p>To schedule coroutines (D)</p> Signup and view all the answers

Study Notes

Error Handling

  • NameNotFoundException occurs when trying to access package information for an application
  • This exception is caught by the android.content.pm.PackageManager

Package Management

  • ApplicationPackageManager is used to get package information
  • The getPackageInfoAsUser method is called to retrieve package information for a specific user
  • This method is called from the getPackageInfo method

OAID (Open Advertising ID) Implementation

  • OAID is implemented using the SamsungImpl and MsaImpl classes
  • These implementations use the OAIDFactory class to create an instance of the OAID
  • The OAIDFactory class has methods c and a which are used to create the OAID instance
  • The DeviceID class is used to store the OAID instance

Coroutine Scheduling

  • Coroutines are scheduled using the CoroutineScheduler class
  • The Worker class is used to run coroutines
  • The startState method is used to start the coroutine
  • The resumeWith method is used to resume the coroutine
  • The DispatchedTask class is used to dispatch tasks to the coroutine

Kotlin Coroutines

  • Kotlin coroutines are used to implement asynchronous programming
  • The SynchronizedLazyImpl class is used to implement lazy initialization of coroutines
  • The BaseContinuationImpl class is used to implement the coroutine continuation
  • The CoroutineScheduler class is used to schedule coroutines
  • The Worker class is used to run coroutines

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Description

This quiz covers common errors and exceptions in Android app development, including NameNotFoundException and PackageManager errors. Test your knowledge of debugging and troubleshooting Android apps.

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