Kotlin Android - Copy to Clipboard from Fragment

Question

I need to copy a text to clipboard, so I used a code that I already used in MainActivity:

 val myClipboard: ClipboardManager = getSystemService(CLIPBOARD_SERVICE) as ClipboardManager
 val myClip: ClipData

The problem is, this code works fine on an Activity but don't (obviously) on a Fragment.

on getSystemService:

Type inference failed: fun getSystemService(p0: Context, p1: Class): T? cannot be applied to (String)

on CLIPBOARD_SERVICE:

Type mismatch: inferred type is String but Context was expected

I've tried with

getSystemService(context!!, CLIPBOARD_SERVICE)

but doesn't works

Answer 1

When your class is a fragment you can get a reference to its parent Activity by calling getActivity() in Java or just activity in Kotlin.

Using this approach you can change the code in your Activity to

val myClipboard: ClipboardManager = activity.getSystemService(CLIPBOARD_SERVICE) as ClipboardManager
val myClip: ClipData

Answer 2

It's not a good idea to use force unwrap(!!) on context in Kotlin. In your fragment class you can use below code which is safe for any NPE and very clean.

(requireActivity().getSystemService(CLIPBOARD_SERVICE) as ClipboardManager).apply {
        setPrimaryClip(ClipData.newPlainText("simple text", "some other text"))
    }

Happy Coding!