development version is relatively high, you need to add @javascriptinterface annotations to the called function.
Here is the code example given by Google:Webviewdemo.java
Copy Code code as follows:
Package Com.google.android.webviewdemo;
Import android.app.Activity;
Import Android.os.Bundle;
Import Android.os.Handler;
Import Android.util.Log;
Import Android.webkit.JsResult;
Import android.webkit.WebChromeClient;
Import android.webk
class instance in JS, the second parameter is the category name exposed in JS, the reference Java object in JS is the nameIn native Java code such as the following:Mwebview.getsettings (). Setjavascriptenabled (True); Mwebview.addjavascriptinterface (new Javascriptinterface (this) , "Android"); class javascriptinterface{ Context mcontext; /** instantiate the interface and set the context * /javascriptinterface (context c) { mcontext =
WebView error codes
What does WebView error code processing mean? When we use Android devices, the network may be poor or there is no network. In this case, the devices cannot access the server and cannot load Html pages. Generally, when an Html file is loaded without a network connection, the default error page of Android
. setScrollBarStyle (SCROLLBARS_OUTSIDE_OVERLAY );
4) set the web page to be displayed in WevView:Internet: webView. loadUrl ("www.2cto.com ");Local file: webView. loadUrl ("www.2cto.com"); local file stored in: assets File5) If you want to click the link for processing by yourself, instead of the link in the browser of the new Android system. Add an event listen
WebView is done in the UI thread:
runOnUiThread(newRunnable(){@Overridepublicvoid run(){ //CodeforWebView goes here }});2. Thread Blocking
Never block the UI thread, which is a truth to developing Android programs. Although it is the truth, we often do not consciouslyMake some mistakes against it, a common mistake in development is to wait for JavaScript callbacks in the UI thread.For
Multi-Resolution for Android devices
The default Preview mode of the Android browser will narrow down the WebView page and display it in the original size.
By default, the Android browser and WebView are mdpi. Hdpi is equivalent to 1.5 times of mdpi ldpi is equivalent to 0.
This period of time based on the project needs in the development and webview contact more, the previous time about the HTML5 specification dust settles the news appeared in the major IT community front page, more people say: HTML5 will subvert the native app development although I don't quite agree with this but about html5+js+ Css+native's cross-platform development model has also saved the development resources and cost for many enterprises, and im
its most basic function.③ and JS interaction. (If your JS base is better than the Java base, it's a good choice to do some complex processing in this way.)3. How to use WebView?Here directly with an SVN take off the demo, first on the demo after the explanation. The chart of the demo is as follows:Webviewdemo.javaPackage Com.google.android.webviewdemo;Import android.app.Activity;Import Android.os.Bundle;Import Android.os.Handler;Import Android.util.L
A high-performance webkit kernel browser is built in the Android mobile phone. It is encapsulated as a WebView component in the SDK.
What is webkit
WebKit is a software framework included in Mac OS X v10.3 and later versions (for v10.2.7 and later versions, you can also obtain it through software updates ). WebKit is also the foundation of Mac OS X's Safari web browser. WebKit is an open-source project. I
Synchronous and asynchronous access mechanism between Android and WebView, androidwebview
We all know that through WebView, we can develop our applications on the Android client using Web development.
If an application is simply a WebView, and all logic only needs to interac
Reprint Please specify source:http://blog.csdn.net/allen315410/article/details/44619181Some time to do the project, in the project with the WebView components, encountered some problems, so specifically to find some information, learning how to solve, now will learn the content into a blog record here, convenient to meet again later can quickly see and solve the problem. We know that Android
of content rendering needs to use webviewchromclient to implement, so set a default base class Webchromeclient on the lineMwebview.setwebchromeclient (New Webchromeclient ());Used to bounce alert and so on, if you want to customize the Alert,confirm dialog box, you must override the Onalert and Onconfirm methods2. The JS method implemented in WebView cannot be calledIn the process of implementing WebView a
display the page:Internet use: Webview.loadurl ("http://www.google.com");For local files: Webview.loadurl ("file:///android_asset/XX.html"); Local files are stored in the: Assets file.5) If you wish to click on the link handled by yourself instead of the new Android system browser should link. Add an Event Listener object (webviewclient) to WebView and override some of these methods:Shouldoverrideurlloadin
This.setscrollbarstyle (Scrollbars_outside_overlay);
4 set Wevview to display the page:
Internet use: Webview.loadurl ("http://www.google.com");
Local file use: Webview.loadurl ("file:///android_asset/XX.html"); Local files are stored in the: Assets file.
5 If you want to click on the link by yourself, instead of opening the new Android system browser should be linked in the ring. Add an Event Listener object (webviewclient) to
old data)" data types that are transferred between applications and WebView implementations. For example, URLUtil class. (4) define the specific implementation code of some webviews. 2.
Frameworks/webview-- Chromium/java (1) glue Layer Code, bridging Android WebView Framewo
1 Android uses WebView implementation to invoke Android code in JSin Java or Android, the interface occupies a large proportion, do programmers of course to understand the interface, haha! Android and JS seemingly horse and Beast, but because of the
# OVERVIEW
I believe you have noticed that in the latest Android 4.4 Kitkat version, the WebView implementation based on Android WebKit was replaced with the WebView implementation based on Chromium. In the previous chapter, the author also introduced that the chrome-based WebView
the page finishes and then launches the picture loading.Therefore, the following code is set when WebView is initialized:public void Int () { if (Build.VERSION.SDK_INT >=) { webview.getsettings (). setloadsimagesautomatically ( true); } else { webview.getsettings (). setloadsimagesautomatically (false);} } Add the following code to the Onpagefinished () method in the Webviewclient instance of
can use it as follows:
if(null!=savedInstanceState){wv.restoreState(savedInstanceState);Log.i(TAG, "restore state");}else{wv.loadUrl("http://3g.cn");}
Try it out. The results are satisfactory and the recovery is quite successful! 32 likes !!!
However, I still have a question: After opening the back page in the circle of friends, the back page can be restored to the original location. I don't know how they do it. If the back is normal, the onSaveInstanceState (bundle) will not
Android: webview implements a simple browser
Enables the browser to return to the forward homepage and exit the URL entry function.
The comment is very clear.
First, layout files
MainActivity
Package com. example. webview; import android. OS. bundle; import
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.