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Junior — Middle

How to organize the execution of five simultaneous reference queries and get all results before finishing the method?

sobes.tech AI

Answer from AI

To perform five simultaneous requests to directories in Android, you can use Kotlin Coroutines with the async function for parallel execution and awaitAll to wait for all results. This allows launching requests concurrently and waiting for their completion before proceeding.

Example:

import kotlinx.coroutines.*

suspend fun fetchAllDirectories(): List<ResultType> = coroutineScope {
    val deferredList = listOf(
        async { fetchDirectory1() },
        async { fetchDirectory2() },
        async { fetchDirectory3() },
        async { fetchDirectory4() },
        async { fetchDirectory5() }
    )
    deferredList.awaitAll() // Wait for all requests to complete and get results
}

suspend fun fetchDirectory1(): ResultType {
    // request implementation
}
// Similarly for other fetchDirectoryN functions

This approach is efficient and does not block the main thread, which is important for Android applications.