What does the wood say, PackageCom.example.deemo;Importandroid.app.Activity;Importandroid.content.Intent;ImportAndroid.net.Uri;ImportAndroid.os.Bundle;ImportAndroid.view.View;ImportAndroid.view.View.OnClickListener;ImportAndroid.webkit.WebView;Importandroid.webkit.WebViewClient;ImportAndroid.widget.Button; Public classMainactivityextendsactivity{PrivateString url= "http://www.bilibili.com";//Address PrivateWebView WebView; @Overrideprotected voidon
1: process the webview return key
If you use the webview link to view many pages, if you do not perform any processing, click the system "back" key, and the entire browser will call finish () to end itself,If you want to roll back the web page to be browsed, instead of exiting the browser, you must process and consume
processing different screen resolutions and special resource Images, see: High DPI Images forVariable Pixel Densities.
(3): use JavaScript for different screen resolutions
The Android browser and WebView both support Dom attributes, so that we can use the DOM attribute window. devicePixelRation to query the density of the current device. The value of this attribute indicates the scaling factor currently s
Ext.: http://fangjie.info/?p=417#more-417One, Webview.setwebviewclient (New Mywebviewclient ());1.publicboolean shouldoverrideurlloading (WebView view, String URL) { onwebpageshouldload ( view, URL); // through return true ; }The click Request is a link is only called, overriding this method returns true to indicate that clicking on the link in the page or in the current WebView jump, do no
WebView is a good thing. It serves as a mini browser and adopts the Webkit kernel. Therefore, it supports html, javascript, css, and so on perfectly. Sometimes, we can hand over the UI and even data processing to WebView, and cooperate with PHP and other server programs. In this way, Android development becomes web development, saving a lot of effort.The followin
);Webview.setwebviewclient (New Mywebviewclient ());Webview.addjavascriptinterface (New Myandroidinterface (), "androidinterface");String url = "file:///android_asset/tangbangjidian/fuwu.html";String url = "file:///android_asset/baitian/index.html";Webview.loadurl (URL);} Class myandroidinterface{Public Myandroidinterface () {};@JavascriptInterface//Note: Add this line of annotationspublic void Call (String number) {Start a phone call with intentIntent Intent = new Intent (Intent.action_call,uri
, but:
Webviewdidfinishload Proxy method is called, the page is not necessarily completely complete, there may be a picture has not been loaded out, resulting in the height of the acquisition is small, after a while the picture is loaded, the browser will be re-typesetting the page is big, and we gave a high enough content to show, Causes an exception to be displayed.
The cause of the problem is determined and the solution is considered:
A recent requirement is this: Add a mall to the app, and the implementation of the mall is H5 (including login). You need to embed this H5 into your native app and add payment functionality to your native code.When received this demand, think this is not very simple, with webview load this page, through the JS callback native method, then call third party payment, completed.But when it comes to real development, the problem arises.The first problem is
The cookie session is displayed in the form of key---value,1. The session is stored on the server side, and there is a section of the control store user information, mainly to determine whether the user is logged in, when the client uses Httpclient/httpurlconnection for login requests, pass the past Username= " CCC "service side of the session to determine whether there is a change SessionID, and value, does not exist on behalf of the user has not logged in, the server will automatically generat
) Tv_url = (TextView) This.findviewbyid (R.id.tv_url);//Set Listener event Backbutton.setonclicklistener (this); reFreshbutton.setonclicklistener (this);//If you just use this sentence, then the default loading system comes with the browser to open the url//webview.loadurl ("http:// www.baidu.com/"); Webview.loadurl (url_value);/* To avoid using the system's own browser, we need to rewrite the method */webv
WebView and ioswebview for iOS development
I have been using iOS apps for some time. I have never had the chance to use WebView in my previous demo. Today I will check for missing information and use WebView. The earliest contact with WebView was made in Android, And the WebView
Android.webkit.WebView itself is a browser implementation, and its kernel is based on the open source WebKit engine.Common methods:void GoBack (): Backvoid GoForward (): Forwardvoid Loadurl (String URL): Load Web pageBoolean zoomin (): Enlarge Web pageBoolean zoomout (): Shrinking Web pageFor more information, please refer to the official documentation (DOCS/REFERENCE/ANDROID/WEBKIT/WEBVIEW.HTML)1. Load the URL corresponding to the pageWebView
are difficult to obtain accurate height, not the method does not, but:
Webviewdidfinishload Proxy method is called, the page does not necessarily complete display, there may be pictures have not been loaded out, resulting in the height of the acquisition is small, after a while the picture is loaded, the browser will be the layout of the Web page is propped up, and we have given the height of the content of the display, Causes an exception to be disp
In recent work, basically has been using webview, today to tidy it up:WebView as the name implies, is to put a Web page, a look is very simple, but it is not so simple to use the control.First of all you have to define, initialize a webview, in fact, there are many examples of online, I will simply put some of the webview may be used in some of the important prop
1. Use UIWebView to load Web pagesrun Xcode 4.3 and create a new single View application named Webviewdemo.
2, loading WebViewAdd WebView member variable in VIEWCONTROLLER.H and add implementation in VIEWCONTROLLER.M
Copy Code code as follows:
#import
@interface Viewcontroller:uiviewcontroller{UIWebView *webview;}@endViewcontroller.m-(void) viewdidload{[Super Viewdidload];
Android.webkit.WebView itself is a browser implementation, and its kernel is based on the open source WebKit engine.Common methods:void GoBack (): Backvoid GoForward (): Forwardvoid Loadurl (String URL): Load Web pageBoolean zoomin (): Enlarge Web pageBoolean zoomout (): Shrinking Web pageFor more information, please refer to the official documentation (DOCS/REFERENCE/ANDROID/WEBKIT/WEBVIEW.HTML)1. Load the URL corresponding to the pageWebView
Android(the list in Android must be converted into a JSON string to be passed into JS, obtained using eval (JSON))Method of invoking JS in Write a method with or without a parameter in 1:js such as function init () {Alert ("Method display in JS");}2: Use Webview.loadurl ("Javascript:init ()"), make a call displayThree: WebView loading HTML5 full Screen display solution1:Four: Attributes of the webview (nec
method of the page:Webview.getclass (). GetMethod ("OnPause"). Invoke (WebView, (object[]) null); (Low version test OK)Continue playback: Used in the Onresume method of the page:Webview.getclass (). GetMethod ("Onresume"). Invoke (WebView, (object[]) null); (Low version test OK)This allows you to control the pause and resume playback of the video.In addition, say one thing:Webview.resumetimers () (not reli
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