gistfile1.java

    @SuppressLint("SetJavaScriptEnabled")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        //Force to login on every launch.
        CookieManager cookieManager = CookieManager.getInstance();
        cookieManager.removeAllCookie();

        button = (Button) findViewById(R.id.button);
        webView = (WebView) findViewById(R.id.webView);
        webView.getSettings().setJavaScriptEnabled(true);
    }