handling links in a webview

Question

I have my WebView loading all links inside the webview - but when I select an email link it tries to load it in the webview instead of launching an email app on the phone. How do I resolve that? the links are mailto://[email protected]

Here is my code - the WebView itself works right and everything loads inside the webview, including mailto:, etc. Need the mailto links to load elsewhere

package com.apps.jerdog.crcc;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.WebView;
import android.webkit.WebViewClient;

@SuppressWarnings("unused")
public class mainActivity extends Activity {
    /** Called when the activity is first created. */
    /**@Override */
    WebView webview;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        webview = (WebView) findViewById(R.id.webview);
        webview.getSettings().setJavaScriptEnabled(true);
        webview.getSettings().setSupportZoom(true);
        webview.getSettings().setBuiltInZoomControls(true);
        webview.setWebViewClient(new WebViewClient());
        webview.loadUrl("http://www.cedarridge.cc");
        }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
            webview.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }
    private class myWebViewClient extends WebViewClient {
        public boolean shouldOverrideUrlLoading(WebView view, String url) 
        {
            if (url.startsWith("mailto:") || url.startsWith("tel:")) { 
                    Intent intent = new Intent(Intent.ACTION_VIEW,
                            Uri.parse(url)); 
                    startActivity(intent); 
                    } 
            view.loadUrl(url);
            return true;
        }
    }}

Acicular

Try this: https://mcmap.net/q/410531/-mailto-links-unsupported-in-android – Privity

Answer 1

I assume you are already overriding shouldOverrideUrlLoading, you just need to handle this special case.

mWebClient = new WebViewClient(){

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            if(url.startsWith("mailto:")){
                MailTo mt = MailTo.parse(url);
                Intent i = newEmailIntent(MyActivity.this, mt.getTo(), mt.getSubject(), mt.getBody(), mt.getCc());
                startActivity(i);
                view.reload();
                return true;
            }

                else{
                    view.loadUrl(url);
                }
                return true;
            }
       };
    mWebView.setWebViewClient(mWebClient);

    public static Intent newEmailIntent(Context context, String address, String subject, String body, String cc) {
      Intent intent = new Intent(Intent.ACTION_SEND);
      intent.putExtra(Intent.EXTRA_EMAIL, new String[] { address });
      intent.putExtra(Intent.EXTRA_TEXT, body);
      intent.putExtra(Intent.EXTRA_SUBJECT, subject);
      intent.putExtra(Intent.EXTRA_CC, cc);
      intent.setType("message/rfc822");
      return intent;
}

Steelyard

I get "IntentSupport cannot be resolved" on the 'IntentSupport.' statement I also get "Syntax error on token "mWebClient", VariableDeclaratorId expected after this token" on the 'mWebView.setWebViewClient(mWebClient);' code.... – Acicular

IntentSupport is my own utility class that makes commonly used intents. sorry about that edited with the missing code. – Steelyard

still getting the "IntentSupport cannot be resolved" error message and MIME_TYPE_EMAIL is coming up with "MIME_TYPE_EMAIL cannot be resolved to a variable" – Acicular

oh geez the mimetype is "message/rfc822" – Steelyard

Intent support can't be resolved because you don't have a class named IntentSupport sorry I confused you. I will edit above. – Steelyard

I have put my whole code in - hopefully that helps figure out what I need to do. – Acicular

you arent using the WebClient you extended, you have webview.setWebViewClient(new WebViewClient()); where is it you are using the webview client you defined below? – Steelyard

so I should be using "webview" which I created...? makes sense.... so this (private class myWebViewClient extends WebViewClient) should be (private class myWebViewClient extends webview)? – Acicular

when I change (private class myWebViewClient extends WebViewClient) to be (private class myWebViewClient extends webview) it doesn't like it - suggests I set it back to be WebViewClient.... – Acicular

i am completely a noob to Java - my brain isn't clicking in the transfer from asp.net vb to here.... – Acicular

take a closer look at my code above, I extend WebViewClient in the same line that I pass it as a parameter to my WebView. This is a common pattern you will see in java. – Steelyard

so in my full code in my post - what would I change around? sorry for just completely missing how this works – Acicular

I just told you in my last comment you need to set the proper WebViewClient for your webview. In this case you would use your improperly named myWebViewClient. webview.setWebViewClient(new myWebViewClient()); – Steelyard

ok - my apologies - I got it now. Thanks so much for your help. – Acicular

you can leave out the Context parameter from that function as it is not used at all. – Borisborja

view.reload(); is much helpful. – Tenorrhaphy

Answer 2

Going off of the answer provided by @schwiz, here is a cleaner example. Assuming the WebView is named webView:

webView.setWebViewClient(new WebViewClient() {
    // shouldOverrideUrlLoading makes this `WebView` the default handler for URLs inside the app, so that links are not kicked out to other apps.
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        // Use an external email program if the link begins with "mailto:".
        if (url.startsWith("mailto:")) {
            // We use `ACTION_SENDTO` instead of `ACTION_SEND` so that only email programs are launched.
            Intent emailIntent = new Intent(Intent.ACTION_SENDTO);

             // Parse the url and set it as the data for the `Intent`.
            emailIntent.setData(Uri.parse(url));

            // `FLAG_ACTIVITY_NEW_TASK` opens the email program in a new task instead as part of this application.
            emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            // Make it so.
            startActivity(emailIntent);
            return true;
        } else {  
            // Returning false causes WebView to load the URL while preventing it from adding URL redirects to the WebView history.
            return false;
        }
    }
});

I have tested this with all the mailto: options: multiple email addresses, CC, BCC, subject, and body.

Keeler

Answer 3

::::
::::   

    webViewTerms = (WebView) v
            .findViewById(R.id.webview_termsAndCond);
    webViewTerms.setWebViewClient(new Client());
    webViewTerms.getSettings().setJavaScriptEnabled(true);
    //webViewTerms.getSettings().setBuiltInZoomControls(true);
    webViewTerms.loadUrl(getUrl()); //.loadUrl("https://www.google.com/");
::::
::::
::::
    private class Client extends WebViewClient {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);

            return true;
        }

        @Override
        public void onPageFinished(WebView view, String url) {
            // TODO Auto-generated method stub
            super.onPageFinished(view, url);


        }

    }

Debrief