ByteArray to Float in kotlin

Issue

I have a 4 bytes array which represent a float value. Since kotlin lack of bitwise operations for Byte how can I convert it to float in most optimal way?

Solution

You can use the Java NIO ByteBuffer, it has the getFloat() and getFloat(index) functions for that:

val bytes = byteArrayOf(1, 2, 3, 4)

val buffer = ByteBuffer.wrap(bytes)
val float1 = buffer.getFloat()  // Uses current position and increments it by 4
val float2 = buffer.getFloat(0) // Uses specified position

Answered By - hotkey