Can I access enum property with string in kotlin?

Question

I have an enum of regions like this:

enum class Regions(val location:String){
   REGION_1("London"),
}

Is there a way to access the properties of region_1 with just a string like in the below function?

fun access(name:String){
    return Regions.<modifed_name>.location 
}

Jolan DAUMAS · Accepted Answer · 2022-06-03 13:00:42Z

3

You can convert your string to enum using valueOf(value: string) and then use the location

fun access(name:String): String = Regions.valueOf(name.uppercase()).location

edited Jun 3, 2022 at 13:00

answered Jun 3, 2022 at 12:20

Jolan DAUMAS

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2 Comments

lukas.j Over a year ago

Note that this will crash the application if name is not REGION_1, REGION_2, etc.

gidds Over a year ago

@lukas.j It will throw an exception (specifically, an IllegalArgumentException). Whether that causes a crash depends on whether it's caught anywhere, which thread it's running in, and the type of program.

lukas.j · Accepted Answer · 2022-06-03 12:47:43Z

2

enum class Regions(val location: String) {
  REGION_1("London"),
  REGION_2("Berlin"),
  REGION_3("Pairs")
}

fun access(name:String): String {
  return Regions.values().firstOrNull() { it.name == name }?.location ?: "location not found"
}

println(access("REGION"))     // Output: location not found
println(access("REGION_2"))   // Output: Berlin

answered Jun 3, 2022 at 12:47

lukas.j

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