Kotlin parse Hex String to Long

Since Kotlin v1.1 you can use:

"ED05265A".toLong(radix = 16)

Until then use the Java's Long.parseLong.

You can simply use

java.lang.Long.parseLong("ED05265A", 16)

Or

import java.lang.Long.parseLong 

[...] 

parseLong("ED05265A", 16)

Kotlin is compatible with Java, and you can, and should, use Java's built-in classes and methods.