카카오톡이 설치 안되었을때, 마켓으로 이동

Android - Kotlin

https://play.google.com/store/apps/details?id=com.kakao.talk&hl=ko 

if(!LoginClient.instance.isKakaoTalkLoginAvailable(this)){

    val intent = Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=com.kakao.talk"))
    startActivity(intent)
}

iOS - Swift

https://apps.apple.com/kr/app/카카오톡-kakaotalk/id362057947

if (!UserApi.isKakaoTalkLoginAvailable()) {
    let appId = "362057947"
    if let url = URL(string: "itms-apps://itunes.apple.com/app/id\(appId)"), UIApplication.shared.canOpenURL(url) {
        if #available(iOS 10.0, *) {
            UIApplication.shared.open(url, options: [:], completionHandler: nil)
        } else {
            UIApplication.shared.openURL(url)
        }
    }
}

Javascript SDK 카카오링크

https://developers.kakao.com/sdk/reference/js/release/Kakao.Link.html

Kakao Developers

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