JavaScript Alert does not work on webview android

Question

JavaScript Alert does not work on webview android

Navigation

#1 by (2 votes)
#2 by (0 votes)

1

I thought it was a single line but it does not activate me:

Here is the code:

WebView myWeb;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myWeb = (WebView) findViewById(R.id.wb);
        myWeb.getSettings().setJavaScriptEnabled(true);
        myWeb.setWebViewClient(new WebViewClient());
        myWeb.loadUrl("http://mi.pagina.com");
    }

As you can see, the line that I thought was only shown is:

myWeb.getSettings().setJavaScriptEnabled(true);

Clarification: The effects of materialize are perfect for me, what does NOT work for me is the ads in the javascript window, for example, when I want to delete a user, a message appears on the website asking if I am sure to delete or not, and if I accept accept it eliminates it, because that is what does not appear in my WEBVIEW.

Any ideas?

Now I am trying with this code that in theory I should walk but I close the application "has stopped":

  WebView webView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        webView = (WebView) findViewById(R.id.wb);
        webView.setWebChromeClient(new WebChromeClient());
        webView.setWebViewClient(new WebViewClient());
        webView.getSettings().setJavaScriptEnabled(true);
        webView.loadUrl("http://mi.pagina.com");
    }

android javascript android-studio webview-android

asked by Strelok 05.04.2017 в 19:34

source

2 answers

Render multiple forms and validate them in a single template in DJANGO Problem when sending a range of php dates

score 2 · Answer 1

You have to use WebChromeClient for this.

An example:

 @Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     setContentView(R.layout.activity_main);
     myWeb = (WebView) findViewById(R.id.wb);
     myWeb.setWebViewClient(new WebViewClient());
     myWeb.setWebChromeClient(new WebChromeClient());
     myWeb.getSettings().setJavaScriptEnabled(true);

     myWeb.loadUrl("http://mi.pagina.com");
 }

You can try to put this code to see the generated errors:

@Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error){
    Toast.makeText(getActivity(), "Tu conexión a Internet podría no estar activa o " + error , Toast.LENGTH_LONG).show();
}

score 0 · Answer 2

A JavaScript alert

    alert("Stackoverflow.com is cool!");

that is from a web page that we load inside a WebView can not show the default message, you would have the option to enable WebChromeClient() and obviously enable the execution of Javascript:

WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
webView.setWebChromeClient(new WebChromeClient());