How to load Web pages, files, and HTML using UIWebView in IOS _ios

UIWebView is a box used to load data from a Web page. UIWebView can be used to load PDF Word doc and so on files

There are two ways to generate WebView:

1, through the storyboard drag

2, initialized by Alloc init.

Create WebView, _webview.datadetectortypes = Uidatadetectortypeall in the following text; is to identify the type in the WebView, for example, when there is a phone number in the WebView, click the number to call directly

-(UIWebView *) WebView 
{ 
if (!_webview) { 
_webview = [[UIWebView alloc] initWithFrame:self.view.bounds]; 
_webview.datadetectortypes = Uidatadetectortypeall; 
} 
return _webview; 
} 

Load Web page

Let the browser load the specified string and search using m.baidu.com 
-(void) LoadString: (NSString *) str 
{ 
//1. URL locates resources, requires the address of the resource 
nsstring *urlstr = str; 
if (![ Str hasprefix:@ "http://"]) { 
urlstr = [NSString stringwithformat:@ "http://m.baidu.com/s?word=%@", str]; 
} 
Nsurl *url = [Nsurl urlwithstring:urlstr]; 
2. Tell the URL to the server, request, request data from the m.baidu.com 
nsurlrequest *request = [Nsurlrequest requestwithurl:url]; 
3. Send the request to the server 
[Self.webview loadrequest:request]; 

Load HTML

HTML is the design language for Web pages 
//<> notation </>// 
scenarios: Intercepting a part of a Web page display 
//For example: the full content of the Web page contains ads! After loading the completion page, Remove the HTML from the advertising section and then load 
//be used by many news class applications 
[Self.webview loadhtmlstring:@ "<p>Hello</p>" BaseURL: NIL];

Loading local files

#pragma mark-load file 
-(void) loadfile 
{ 
//scenario: Load files downloaded from the server, such as PDFs, or word, pictures, etc. 
nsurl *fileurl = [ NSBundle Mainbundle] urlforresource:@ "about. txt" withextension:nil]; 
Nsurlrequest *request = [Nsurlrequest requestwithurl:fileurl]; 
[Self.webview Loadrequest:request]; 

Loading local files in a level two system

#pragma loading files as binary data 
-(void) loaddatafile 
{ 
//most common one case 
//open IE, visit website, prompt you to install Flash plugin 
// Without this application, it is impossible to open the corresponding file 
//scenario with UIWebView: Load files downloaded from the server, such as PDFs, or word, pictures, etc. 
nsurl *fileurl = [[NSBundle Mainbundle] urlforresource:@ "IOS 7 programming Cookbook.pdf" Withextension:nil]; 
Nsurlrequest *request = [Nsurlrequest requestwithurl:fileurl]; 
The server's response object, the server receives the request to return to the client 
nsurlresponse *respnose = nil; 
NSData *data = [nsurlconnection sendsynchronousrequest:request returningresponse:&respnose Error:NULL]; 
NSLog (@ "%@", Respnose.) MimeType); 
In iOS development, if not a special requirement, all text encoding is used UTF8 
///UTF8 to interpret the received binary data stream 
[Self.webview loaddata:data mimetype:respnose. MimeType textencodingname:@ "UTF8" Baseurl:nil]; 
}

The above is a small set of iOS for you to introduce the use of UIWebView loading Web pages, files, HTML methods, I hope to help.