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Coroutines: Creating a simple coroutine context
Devrath edited this page Dec 30, 2023
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1 revision
- Here observe even before printing the print statements, it printed the statements outside of it and then the print statements inside of it -->
Because
the coroutine scope suspended the block, and instead of keeping the thread blocked, it proceeded with execution. - Now once the suspended block gets executed the other print statements are printed.
- If we directly try to access the main thread inside the scope, It will print an error(We need to execute it by switching to the main thread).
fun createCoroutineScopeDemo() {
println("Before the scope")
CoroutineScope(context = prepareContext()).launch {
val name = coroutineContext[CoroutineName]?.name
println("$name:-> Before the delay")
delay(1000)
println("$name:-> After the delay")
}
println("After the scope")
}
private fun prepareContext(): CoroutineContext {
val context = EmptyCoroutineContext
val name = "MyCoroutine"
val job = Job()
val exceptionHandler = CoroutineExceptionHandler{ _ , throwable ->
println("Error in coroutine: $throwable")
}
val dispatcher = Dispatchers.Default
return (context + job + CoroutineName(name) + dispatcher + exceptionHandler)
}
Before the scope
After the scope
MyCoroutine:-> Before the delay
MyCoroutine:-> After the delay