kotlin webview android.view.View android.view.View.findViewById(int)' on a null object reference ko

Question

I'm having this error does anyone know how to fix it? Any help is welcome. thank you. i'm using fragment

class ForumFragment : Fragment() {

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,
                              savedInstanceState: Bundle?): View? {



      ERROR LINE->  val wv = webView.findViewById(R.id.webView) as WebView

        webView.loadUrl("https://www.google.com/");
        webView.clearView();
        webView.measure(100, 100);
        webView.getSettings().setUseWideViewPort(true)
        webView.getSettings().setLoadWithOverviewMode(true);

        return inflater.inflate(R.layout.fragment_forum, container, false)
    }

  }

LOGCAT ERROR ->

java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.View android.view.View.findViewById(int)' on a null object reference
                at .fragments.ForumFragment.onCreateView(ForumFragment.kt:45

In onCreateView first you must inflate your layout which returns view, and then using that view instantiate your webview — Bek
– Bek, Commented Jun 30, 2019 at 6:06
Could you post the layout of the fragment you're using? Where are you accessing the instance of webView from? — Edric
– Edric, Commented Jun 30, 2019 at 6:07

Armin Haghighi · Accepted Answer · 2019-06-30 06:16:57Z

1

class ForumFragment : Fragment() {

    private lateinit var v: View
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        v = inflater.inflate(R.layout.frag_list_project, container, false)
        val wv = v.findViewById(R.id.webView) as WebView

        wv.loadUrl("https://www.google.com/");
        wv.clearView();
        wv.measure(100, 100);
        wv.getSettings().setUseWideViewPort(true)
        wv.getSettings().setLoadWithOverviewMode(true);
        return v

    }

answered Jun 30, 2019 at 6:16

Armin Haghighi

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