IOS---UIWebview用法点滴

最新推荐文章于 2025-09-11 20:09:50 发布

原创最新推荐文章于 2025-09-11 20:09:50 发布 · 4.1k 阅读

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文章标签：

#url #encoding #html

本文详细介绍了如何使用UIWebView在iOS应用中加载、控制网页，并提供了自定义请求、查看返回、通过JS控制Webview等实用技巧。通过实例演示了如何在应用中集成外部网页内容，以及如何进行数据交互。

1. load from url：从url加载页面

NSURL *url = [NSURL URLWithString:"http://stackoverflow.com"];
NSString *body = @"laadeedaa";

NSURLRequest *request = [NSURLRequest requestWithURL:url];
[request setHTTPMethod: @"POST"];

// Dump the response to the UIWebView
[webView loadRequest:request];

2. 自定义 webview的请求，load with customized request

// Do your POST
NSURL *url = [NSURL URLWithString:"http://stackoverflow.com"];
NSString *body = @"laadeedaa";

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request setHTTPMethod: @"POST"];
[request setHTTPBody: [body dataUsingEncoding:NSUTF8StringEncoding]];

// Dump the response to the UIWebView
[webView loadRequest:request];

3.查看webveiw的返回

// Dump the response to the UIWebView
[webView loadRequest:request];

NSURLResponse *response = nil;
NSError *error = nil;
NSData *respData = [NSURLConnection sendSynchronousRequest:request
                                         returningResponse:&response
                                                     error:&error];
NSString *respString = [[[NSString alloc] initWithData:respData
                                              encoding:NSUTF8StringEncoding] autorelease];

NSString *htmlString = [self doSomethingWith:respString];

[webView loadHTMLString:htmlString baseURL:@"http://stackoverflow.com"];

4.通过js控制webview

- (NSString *)stringByEvaluatingJavaScriptFromString:(NSString *)script

例如： NSString *html = [yourWebView stringByEvaluatingJavaScriptFromString: @"document.body.innerHTML"];