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Android App Development Errors
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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</p> Signup and view all the answers

    What is the name of the coroutine scheduler class?

    <p>CoroutineScheduler</p> Signup and view all the answers

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

    <p>startState</p> Signup and view all the answers

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

    <p>DispatchedTask</p> Signup and view all the answers

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

    <p>resumeWith</p> Signup and view all the answers

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

    <p>NameNotFoundException</p> Signup and view all the answers

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

    <p>getPackageInfoAsUser</p> Signup and view all the answers

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

    <p>DeviceIDHelper</p> Signup and view all the answers

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

    <p>CoroutineScheduler</p> Signup and view all the answers

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

    <p>run</p> Signup and view all the answers

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

    <p>getPackageInfoAsUser</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</p> Signup and view all the answers

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

    <p>DeviceIDHelper</p> Signup and view all the answers

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

    <p>WorkerException</p> Signup and view all the answers

    What is the name of the coroutine scheduler class?

    <p>CoroutineScheduler</p> Signup and view all the answers

    In which file is the CoroutineScheduler class defined?

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

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

    <p>NameNotFoundException</p> Signup and view all the answers

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

    <p>isOaidSupported</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</p> Signup and view all the answers

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

    <p>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</p> Signup and view all the answers

    What is the purpose of the CoroutineScheduler class?

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

    Where is the getPackageInfo method located?

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

    What is the purpose of the DeviceIDHelper class?

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

    What is the purpose of the startState method?

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

    Where is the startState method located?

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

    What is the purpose of the OAIDFactory class?

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

    Where is the isOaidSupported method located?

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

    What is the purpose of the CoroutineScheduler class?

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

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

    <p>getPackageInfoAsUser</p> Signup and view all the answers

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

    <p>NameNotFoundException</p> Signup and view all the answers

    What is the purpose of the isOaidSupported method?

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

    What is the purpose of the DeviceIDHelper class?

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

    What is the purpose of the startState method?

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

    What is the purpose of the dispatchTask method?

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

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

    <p>To schedule coroutines</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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