How to concatenate /append 2 strings in kotlin?

Question

I am trying to concatenate an Int with a String such that the output is a String but not sure how to go about it.

Here's my code so far:

val myMessage = context.getString(R.string.mymessage)

where myMessage is a String.

Now I want to append an Int which is it.myinfo.codeid.

score 15 · Accepted Answer · answered Feb 15 '18 at 06:16

15

"${context.getString(R.string.mymessage)} ${it.myinfo.codeid}"

answered Feb 15 '18 at 06:16

Salem

That’s the way to go – s1m0nw1 Feb 15 '18 at 06:48
@Moira any idea about this one ? https://stackoverflow.com/questions/49302694/how-do-i-detect-skype-telegram-whatsapp-calls-when-my-messenger-app-is-in-a-call – Mar 19 '18 at 18:07

score 2 · Answer 2 · answered Feb 25 '20 at 13:01

Concatenation in kotlin can be done in 3 ways

1 - Using String Templates

val myMessage = "${context.getString(R.string.mymessage)} ${it.myinfo.codeid}"

2 - Using + Sign

val myMessage = context.getString(R.string.mymessage) + " " + it.myinfo.codeid

3 - Using StringBuilder

val sb = StringBuilder()
val myMessage = sb.append(context.getString(R.string.mymessage)).append(it.myinfo.codeid)

score 1 · Answer 3 · answered Feb 15 '18 at 08:37

1

Either use + as known in Java:

context.getString(R.string.mymessage) + " " + it.myinfo.codeid

or use the more idiomatic templates approach:

"${context.getString(R.string.mymessage)} ${it.myinfo.codeid}"

answered Feb 15 '18 at 08:37

s1m0nw1

any idea about this one : any idea about this one ? https://stackoverflow.com/questions/49302694/how-do-i-detect-skype-telegram-whatsapp-calls-when-my-messenger-app-is-in-a-call – Mar 19 '18 at 18:19

3 Answers3