July 2015
Beginner to intermediate
600 pages
18h 59m
English
book
Android Programming: The Big Nerd Ranch Guide, 2nd Edition
by Bill Phillips, Chris Stewart, Brian Hardy, Kristin Marsicano
Content preview from Android Programming: The Big Nerd Ranch Guide, 2nd Edition
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For the More Curious: Injecting JavaScript Objects
In this chapter, you have seen how to use WebViewClient and WebChromeClient to respond to specific events that happen in your WebView. However, it is possible to do even more than that by injecting arbitrary JavaScript objects into the document contained in the WebView itself. Check out the documentation at http://developer.android.com/reference/android/webkit/WebView.html and scroll down to the addJavascriptInterface(Object, String) method. Using this, you can inject an arbitrary object into the document with a name you specify.
mWebView.addJavascriptInterface(new Object() { @JavascriptInterface public void send(String message) { Log.i(TAG, "Received message: " + message); } ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.