Develop Reference

How to implement voiceover/Talkback accessibility in react-native webview?

I need to implement an accessibility feature of Voiceover(ios) or talkback(android) in React-native webview for both android and ios.
I am facing two issues:
1: I have div's and paragraphs (p tag) whose content has been read out by device. But I need to add some string as prefix or postfix in those.
Example
code is: <div> Hey Tap me to see magic </div>
Spoken content needed: 1 element of list "Hey Tap me to see magic" click to perform xyz action
.
2: Whenever action happen (i.e. on double tap of element) Device should speak:
"Magic has happened"
What I have tried
I have tried using speechSynthesis of HTML% Text to Speech:
var msg = new SpeechSynthesisUtterance('Hello World');
window.speechSynthesis.speak(msg);
This approach is working for my 2nd issue in ios (iphone X),
But No response in android devices
Thanks

phonegap android GO button to not submit form

I'm writing an app with Phonegap and I have a register form that is sent through ajax. It works fine when you hit the register button and execute the formcheck() function. However, when I hit the GO button from my android phone it submits the form instead of going through the formcheck() process. I tried:
<form id="RegForm" onsubmit="formcheck();return false;">
My form has no proper submit button but a button like this:
<input type="button" id="submitbtn" onclick="formcheck()"/>
I also tried to create a new OnSubmitForm() function that calls the formcheck() one but with no avail. Thank you for helping.

Found it!
1) Add this to the JS section:
$(document).ready(function() {
$("#YourFormName").submit(function() {
FormCheck();
return false;
});
});
function FormCheck() {
... validation process here ...
}
2) Make sure to include a Submit button in your form .. ( <input type="submit" )
Hope it'll help others so my 5 hour trying & testing time won't go wasted :)

Simply ensure your form tag is:
<form type='submit' onsubmit='return false;'></form>
This makes the submit action not do anything.
If you also need to hide the keyboard refer to How can I hide the Android keyboard using JavaScript?. A simple onsubmit='hideKeyboard(); return false;' will take care of this.

Mobile Web - Disable long-touch/taphold text selection

I've seen/heard all about disabling text selection with the variations of user-select, but none of those are working for the problem I'm having. On Android (and I presume on iPhone), if you tap-and-hold on text, it highlights it and brings up little flags to drag and select text. I need to disable those (see image):
I've tried -webkit-touch-callout to no avail, and even tried things like $('body').on('select',function(e){e.preventDefault();return;}); to no avail. And the cheap tricks like ::selection:rgba(0,0,0,0); won't work either, as hiding these won't help - selection still happens and it disrupts the UI. Plus I'm guessing those flags would still be there.
Any thoughts would be great. Thanks!

-webkit-touch-callout:none;
-webkit-user-select:none;
-khtml-user-select:none;
-moz-user-select:none;
-ms-user-select:none;
user-select:none;
-webkit-tap-highlight-color:rgba(0,0,0,0);
This will disable it for every browser going.

Reference:
jsFiddle Demo with Plugin
The above jsFiddle Demo I made uses a Plugin to allow you to prevent any block of text from being selected in Android or iOS devices (along with desktop browsers too).
It's easy to use and here is the sample markup once the jQuery plugin is installed.
Sample HTML:
<p class="notSelectable">This text is not selectable</p>
<p> This text is selectable</p>
Sample jQuery:
$(document).ready(function(){
$('.notSelectable').disableSelection();
});
Plugin code:
$.fn.extend({
disableSelection: function() {
this.each(function() {
this.onselectstart = function() {
return false;
};
this.unselectable = "on";
$(this).css('-moz-user-select', 'none');
$(this).css('-webkit-user-select', 'none');
});
return this;
}
});
Per your message comment: I still need to be able to trigger events (notably, touchstart, touchmove, and touchend) on the elements.
I would simply would use a wrapper that is not affected by this plugin, yet it's text-contents are protected using this plugin.
To allow interaction with a link in a block of text, you can use span tags for all but the link and add class name .notSelected for those span tags only, thus preserving selection and interaction of the anchors link.
Status Update: This updated jsFiddle confirms you concern that perhaps other functions may not work when text-selection is disabled. Shown in this updated jsFiddle is jQuery Click Event listener that will fire a Browser Alert for when the Bold Text is clicked on, even if that Bold Text is not text-selectable.

-webkit-user-select:none; wasn't supported on Android until 4.1 (sorry).

On an Android device, how do I prevent taps on an address from launching the Maps application?

I have an application showing a WebView which shows information that includes street addresses like "123 Main St., Citytown, NY". However, when any of these addresses are tapped, it highlights briefly and the usual browser behavior of launching the Google Maps app is triggered.
I would like to prevent that behavior from occurring because some of the addresses aren't meant to be selectable. Is there anything I can do?
Update:
A commenter asked me to paste an example HTML snippet that triggers the behavior.
<hgroup class="unit list_item_body">
<h2 class="thick truncated heading">
Foobar
</h2>
<h3 class="truncated subheading">
123 East Market St., Charlottesville, VA, 22902
</h3>
</hgroup>
Notice there's no link on the address. Nevertheless, tapping the address triggers the behavior of launching Maps. This occurs whether I'm accessing the site through the WebView or viewing the site itself.

I figured this out. This meta tag will preclude the browser controls from hijacking address strings:
<meta name="format-detection" content="address=no">

Take a look at WebViewClient.shouldOverrideUrlLoading
webView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
boolean shouldHandle = true;
//Check if you want to override the loading of the URL and set shouldHandle accordingly
return shouldHandle ;
}
});

HttpUnit/HtmlUnit equivalent for android

I'm looking for a browser-simulating library on android, which handles things like
loading a website (http/https)
Redirections: HTTP (3xx Status Codes), JavaScript, HMTL tags
filling out html-forms
easy html parsing (could fall back to JSoup for that one)
HttpUnit or HtmlUnit would do just fine, but both of them are a pain to get running on android.
Is there any other option other than (Android)HttpClient (and therefore doing lots of the above on my own)? Or can I somehow get use of the android webkit/browser?
Thanks in advance!

I would recommend you to have a look at AndroidDriver for selenium. It seems to be a straightforward approach to easy test WebApplications with the Android Testing Framework.
You must use an Activity that includes a WebView in order to test HTTP/HTTPs websites.
The Driver is instanciated with this Activity:
WebDriver driver = new AndroidWebDriver(getActivity());
Here is a sample test, quoted from the link above:
public void testGoogleWorks()
// Loads www.google.com
driver.get("http://www.google.com");
// Lookup the search box on the page by it's HTML name property
WebElement searchBox = driver.findElement(By.name("q"));
// Enter keys in the search box
searchBox.sendKeys("Android Rocks!");
// Hit enter
searchBox.submit();
// Ensure the title contains "Google"
assertTrue(driver.getTitle().contains("Google"));
// Ensure that there is at least one link with the keyword "Android"
assertTrue(driver.findElements(By.partialLinkText("Android")).size() > 1);
}