.h文件中

@property(strong ,nonitomic) UIWebView * webView;

.m文件中

-(void)viewDidLoad

{

self.webview = [[UIWebView alloc]initWithFormat:CGRectmake(0,0,320,480)];

[self.view addSubview:self.webView];

NSUrlRequeast * request = [NSURLRequest requestWithUrl:[NSURL urlWithString:""]];

//运行一下，百度页面就出来了

[self.webview loadRequest:request];

}