Problem z WebView

Witam, natrafiłem na mały problem pisząc aplikacje na androida a mianowicie, w swojej aplikacji wykorzystuje dwa razy WebView w content_main.xml "id/activity_main_webview" a drugi w nav_header_main.xml "id/webView1"

Chciałbym aby po kliknięciu w Sign in through Steam w "id/webView1" z Menu przerzucało mnie do "id/activity_main_webview" czyli na content_main, szukałem już tego na zagranicznych forach ale nie mogę naleźć, pomoże ktoś? 

A tutaj okrojony kod z MainActivity.java

package com.blebleble;

import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.KeyEvent;
import android.view.MenuItem;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;



public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    private WebView mWebView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);


        mWebView = (WebView) findViewById(R.id.activity_main_webview);
        // Enable Javascript
        WebSettings webSettings = mWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        mWebView.loadUrl("url strona główna");
        // Force links and redirects to open in the WebView instead of in a browser
        mWebView.setWebViewClient(new WebViewClient());



    static WebView mWebView1;
    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.


        mWebView1 = (WebView) findViewById(R.id.webView1);
        // Enable Javascript
        WebSettings webSettings = mWebView.getSettings();
        webSettings.setJavaScriptEnabled(true);
        mWebView1.loadUrl("url logowania");
        // Force links and redirects to open in the WebView instead of in a browser
        mWebView1.setWebViewClient(new WebViewClient());

        }
    }
}

"id/webView1"

"id/webView1"

"id/activity_main_webview"