CODEWITHSUNDEEP
javaandroidlistkotlincollections
Angela
Angela

Reputation: 35

Kotlin IndexOutOfBoundsException on list to map convertion

Iam trying to convert a Dynamic string to map using kotlin associate() transformation and its working properly

Since my query string is Dynamic, sometimes it might not contain required data and thus throwing IndexOutOfBoundsException

fun convetToMap(val data: String) : Map<String, String> {
    return data.split(",").associate { str ->
           str.split("=").let { 
              (key, value) -> key to value
           }
    }
}

val string1 = "id1=1,id2=2,id3=3,id4=4,id5=5" val string2 = "id1=1,id2=2,id3=3,id4=4,id"

convetToMap(string1) runs perfectly and results {id1=1, id2=2, id3=3, id4=4, id5=5}

when i'm trying to run convetToMap(string2) it throws IOB Exception and the logcat says

Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
 at java.util.Collections$SingletonList.get (Collections.java:4815)

is there a way to resolve this by using assocaite(), i have tried using conditions but that couldn't help to solve

Upvotes: 1

Views: 567

Answers (1)

Todd
Todd

Reputation: 31670

You could filter before associating, if you just want to eliminate the bad inputs:

fun convetToMap(val data: String) : Map<String, String> =
    data.split(",")
        .filter { it.contains("=") }
        .associate { str ->
           str.split("=").let { 
              (key, value) -> key to value
           }

Upvotes: 3

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