How to read and write txt files in android in kotlin

Question

I\'m still pretty much a beginner in kotlin and android studio. I can access most of the android widgets but I cannot access files and so far I managed to come across only the f

Answer 1

You need to use internal or external storage directory for your file.

Internal:

val path = context.getFilesDir()

External:

val path = context.getExternalFilesDir(null)

If you want to use external storage you'll need to add a permission to the manifest:

Create your directory:

val letDirectory = File(path, "LET")
letDirectory.mkdirs()

Then create your file:

val file = File(letDirectory, "Records.txt")

Then you can write to it:

FileOutputStream(file).use {
    it.write("record goes here".getBytes())
}

or just

file.appendText("record goes here")

And read:

val inputAsString = FileInputStream(file).bufferedReader().use { it.readText() }