Visit Last Loaded URL - webview

Question

I'm making an app in Xamarin android where user navigates. The app contains webview. When a user opens webview, url gets loaded and browsing can be done. When he ends the app and opens it again, URL is loaded again instead of viewing last visited URL.
I don't know what I'm doing wrong here.
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
webView = FindViewById<WebView>(Resource.Id.webView1);
webView.SetWebViewClient(new MyWebClient());
CookieManager.Instance.SetAcceptCookie(true);
webView.Settings.JavaScriptEnabled = true;
webView.Settings.SetAppCacheEnabled(true);
webView.LoadUrl(getUrl());
webView.SetPadding(0, 0, 0, 0);
webView.Settings.SetSupportZoom(true);
}
public void saveUrl(String url)
{
ISharedPreferences sp = GetSharedPreferences("SP_WEBVIEW_PREFS", FileCreationMode.Private);
ISharedPreferencesEditor editor = sp.Edit();
editor.PutString("SAVED_URL", url);
editor.Commit();
}
public String getUrl()
{
ISharedPreferences sp = GetSharedPreferences("SP_WEBVIEW_PREFS", FileCreationMode.Private);
//If you haven't saved the url before, the default value will be google's page
return sp.GetString("SAVED_URL", "http://google.com");
}
public void onPageFinished(WebView view, String url)
{
this.onPageFinished(view, url);
saveUrl(url);
}
}
internal class MyWebClient : WebViewClient
{
public override bool ShouldOverrideUrlLoading(WebView view, string url)
{
view.LoadUrl(url);
return false;
}
}

Answer 1

You have placed onPageFinished method in an Activity. It should be overridden in MyWebClient class as below:
internal class MyWebClient : WebViewClient
{
public override bool ShouldOverrideUrlLoading(WebView view, string url)
{
view.LoadUrl(url);
return false;
}
public override void OnPageFinished(WebView view, String url)
{
base.OnPageFinished(view, url);
//Save the url here.
//This method itself gives you the last url loaded as it's url Parameter.
ISharedPreferences sp = Application.Context.GetSharedPreferences("SP_WEBVIEW_PREFS", FileCreationMode.Private);
ISharedPreferencesEditor editor = sp.Edit();
editor.PutString("SAVED_URL", url);
editor.Commit().
}
}
This method will be automatically called when URL finished loading and then you will store your loaded URL in this method.