public class MainActivity extends AppCompatActivity {

    private WebView webView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);



        webView = (WebView) findViewById(R.id.webView);
        webView.setWebViewClient(new WebViewClient());
        webView.getSettings().setDomStorageEnabled(true);
        webView.loadUrl("http://google.com");

        try {
            Thread.sleep(4000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        String password = "a123345";
        //webView.loadUrl("javascript:document.getElementById('lst-ib').value = '" + "hi" + "';");
        webView.loadUrl("javascript:var uselessvar  = document.getElementByName('q').value='" + password + "';");
        Log.d("d","Done");

    }
}