[안드로이드 스튜디오 코틀린] WebView Header 추가하기

class MainActivity : AppCompatActivity() {

    private lateinit var binding: ActivityMainBinding
    private lateinit var webView : WebView

    private val header = mutableMapOf<String, String>()

    @SuppressLint("SetJavaScriptEnabled")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)

        webView = binding.webView

        webView.apply {
            webChromeClient = WebChromeClient()
            webViewClient = WebViewClient()
            settings.apply {
                javaScriptEnabled = true
                javaScriptCanOpenWindowsAutomatically = true // window.open() 동작 허용
                loadsImagesAutomatically = true
                domStorageEnabled = false 
                setSupportZoom(false)
                builtInZoomControls = false
                displayZoomControls = false
                setSupportMultipleWindows(true)
            }
        }

        header[HEADER_NAME] = HEADER_VALUE

        // webViewClient가 웹 페이지가 로드하는 동안 요청을 가로채고 제어할 수 있기 때문에 loadUrl과 같이 사용함
        webView.webViewClient = object : WebViewClient() {
            override fun shouldOverrideUrlLoading(view: WebView?, request: WebResourceRequest?): Boolean {
                request?.let {
                    view?.loadUrl(it.url.toString(), header)
                    return true
                }
                return super.shouldOverrideUrlLoading(view, request)
            }
        }

        webView.loadUrl(WEBVIEW_URL, header)
    }

    companion object {
        private const val WEBVIEW_URL = "https://www.naver.com/"
        private const val HEADER_NAME = "headerName"
        private const val HEADER_VALUE = "headerValue"
    }
}