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Questions and Answers
What is the type of exception thrown in the given code snippet?
What is the type of exception thrown in the given code snippet?
In which class is the getPackageInfoAsUser method defined?
In which class is the getPackageInfoAsUser method defined?
What is the purpose of the OAIDFactory class?
What is the purpose of the OAIDFactory class?
What is the name of the method that calls the isOaidSupported method?
What is the name of the method that calls the isOaidSupported method?
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What is the purpose of the DeviceIDHelper class?
What is the purpose of the DeviceIDHelper class?
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What is the name of the scheduler used in the given code snippet?
What is the name of the scheduler used in the given code snippet?
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What is the purpose of the startState method?
What is the purpose of the startState method?
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What is the purpose of the Worker class in the given code snippet?
What is the purpose of the Worker class in the given code snippet?
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What type of exception is thrown in the given code?
What type of exception is thrown in the given code?
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In which class is the getPackageInfoAsUser method located?
In which class is the getPackageInfoAsUser method located?
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What is the name of the class that calls the getPackageInfo method?
What is the name of the class that calls the getPackageInfo method?
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What is the purpose of the OAIDFactory class?
What is the purpose of the OAIDFactory class?
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What is the package name that causes the NameNotFoundException?
What is the package name that causes the NameNotFoundException?
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In which file is the isOaidSupported method located?
In which file is the isOaidSupported method located?
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What is the purpose of the CoroutineScheduler class?
What is the purpose of the CoroutineScheduler class?
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In which class is the startState method located?
In which class is the startState method located?
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What is the prefix of the exception thrown in the given code snippet?
What is the prefix of the exception thrown in the given code snippet?
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Which class is used to get package information?
Which class is used to get package information?
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What type of exception is thrown when a package is not found?
What type of exception is thrown when a package is not found?
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Which method is used to get package information as a user?
Which method is used to get package information as a user?
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What is the name of the method that checks if OAID is supported?
What is the name of the method that checks if OAID is supported?
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Which method is used to start the state in DeviceIDHelper?
Which method is used to start the state in DeviceIDHelper?
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What is the name of the coroutine scheduler?
What is the name of the coroutine scheduler?
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Which method is used to resume a coroutine?
Which method is used to resume a coroutine?
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What is the type of the exception thrown in the given code snippet?
What is the type of the exception thrown in the given code snippet?
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Which class is responsible for getting package info?
Which class is responsible for getting package info?
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What is the purpose of the OAIDFactory class?
What is the purpose of the OAIDFactory class?
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What is the purpose of the isOaidSupported method?
What is the purpose of the isOaidSupported method?
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What is the purpose of the CoroutineScheduler?
What is the purpose of the CoroutineScheduler?
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What is the purpose of the Worker class?
What is the purpose of the Worker class?
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What is the name of the method that gets called before the isOaidSupported method?
What is the name of the method that gets called before the isOaidSupported method?
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In which Kotlin file is the CoroutineScheduler defined?
In which Kotlin file is the CoroutineScheduler defined?
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Study Notes
Android PackageManager and Exceptions
- The
android.content.pm.PackageManagerthrows aNameNotFoundExceptionin multiple instances. - The exceptions occur when calling
getPackageInfoAsUserorgetPackageInfomethods in theApplicationPackageManagerclass. - The error is triggered by different packages, including
com.samsung.android.deviceidserviceandcom.mdid.msa.
OAID Implementation and Factory
- The
com.sand.oaid.implpackage contains implementation classes, such asSamsungImplandMsaImpl. - These implementation classes interact with the
OAIDFactoryclass, which is responsible for creating OAID instances. - The
OAIDFactoryclass has multiple methods, includingaandc, which are called during the execution of the OAID implementation.
DeviceID and DeviceIDHelper
- The
com.sand.oaid.DeviceIDclass is responsible for handling device IDs. - The
DeviceIDHelperclass is used to check if OAID is supported, and it invokes methods from theOAIDFactoryclass. - The
DeviceIDHelperclass also has methods, such asm,k,f, andc, which are called during the execution of the OAID implementation.
Kotlin Coroutines and Scheduling
- The application uses Kotlin coroutines and scheduling mechanisms to handle asynchronous tasks.
- The
kotlinx.coroutines.scheduling.CoroutineSchedulerclass is used to schedule tasks, and it has aWorkerclass that runs the tasks. - The
CoroutineSchedulerclass has methods, such aseandq, which are used to manage the execution of tasks.
Error Handling and Stack Traces
- The application catches exceptions and provides detailed stack traces, including the class and method names, as well as the line numbers.
- The stack traces indicate the sequence of method calls that led to the exception.
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Description
Quiz on Android PackageManager, including NameNotFoundException, getPackageInfo, and ApplicationPackageManager.
