CODEWITHSUNDEEP
javajavascriptandroideclipsewebview
user3176289
user3176289

Reputation: 23

Passing WebView save state to another activity

I have activity A with a functional WebView1 and 3 buttons. I'm saving the Webview1 state under onPause so once activity B opens the state of WebView1 is already saved. My problem is whenever I open Activity B and try to load WebView1 save state onto WebView11 on activity B it gives me a null pointer (White Screen on phone). How can I save the webview state of activity A so it can be restore in activity B??

Example: Im on activity A webview on the bottom of the page I want to save that state so once I open activity 2 webview it takes me to the bottom of the same page instead of reloading the page.

Main Activity

public class MainActivity extends Activity {

    public Bundle webViewBundle;
    WebView wv;
    Button bt1;

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

        wv = (WebView) findViewById(R.id.webView1);

        WebSettings webSettings = wv.getSettings();
        webSettings.setJavaScriptEnabled(true);
        webSettings.setSupportZoom(true);
        webSettings.setBuiltInZoomControls(true);

        wv.loadUrl("http://www.google.com");
        wv.setWebViewClient(new myWebViewClient());

        addListenerOnbt1();

    }

    public void addListenerOnbt1() {

        // Select a specific button to bundle it with the action you want
        bt1 = (Button) findViewById(R.id.button1);

        bt1.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View view) {

                Intent intent = new Intent(MainActivity.this, Activity2.class);

                 Bundle name=webViewBundle;
                 intent.putExtra("name", name);

                startActivity(intent);
                finish();
            }
        });
    }


    @Override
    public void onPause()
    {
        super.onPause();

        webViewBundle = new Bundle();
        wv.saveState(webViewBundle);
    }
}

Activity2

public class Activity2 extends Activity {

    WebView wv2;

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

        Bundle b = new Bundle();
        b = getIntent().getExtras();
        String name = b.getString("name");

        final RelativeLayout rl = new RelativeLayout(this);
        wv2 = (WebView) findViewById(R.id.webView11);

        WebSettings webSettings = wv2.getSettings();
        webSettings.setJavaScriptEnabled(true);

        wv2.restoreState(b); // This line returns Null or white screen  

    }

}

Thank you in advance for your help.

Upvotes: 2

Views: 1990

Answers (1)

alex
alex

Reputation: 6409

Try saving the WebView state and starting the next activity on one go.

Bundle state = new Bundle();
webView.saveState(state);

Intent intent = new Intent(MainActivity.this, Activity2.class);
intent.putExtra("state", state);
intent.putExtra("name", name);

And then restoring it from the extra.

webView.restoreState((Bundle)intent.getParcelableExtra("state"));

Upvotes: 5

Related Questions