Android WebView
A high-performance WebKit kernel browser is built into the Android system, encapsulated as a WebView component in the SDK,
WebView is a control that presents Web pages based on the WebKit engine.
The WebView control is powerful enough to handle URL requests, page loading, rendering, and page interactions in addition to the properties and settings for general view.
In the WebView development process when you need to use some advanced features can be set webchromeclient so as to assist WebView Processing JavaScript dialog box, website icon, site title, loading progress, etc.
Webview.setwebchromeclient (New Webchromeclient ());//Set webchromeclient, auxiliary WebView to handle Javascript dialogs, website icons, website titles, etc.
Webview.setwebviewclient (New Webviewclient ());//Set webviewclient, handle various notifications, request events
Detailed Description:
http://www.jianshu.com/p/3c94ae673e2a#
https://yq.aliyun.com/articles/32559
Android WebView Introduction