#import "WebViewController.h"

@interface WebViewController ()<UIWebViewDelegate>

@end

@implementation WebViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

{

    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

    if (self) {

        // Custom initialization

    }

    return self;

}

+(void)registUserAgent{

    static dispatch_once_t onceToken;

    dispatch_once(&onceToken, ^{

        UIWebView *webView=[[UIWebView alloc]init];

        NSString *oldUA = [webView stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"];

        NSString *newUA = [NSString stringWithFormat:@"%@%@",oldUA,@"你的userAgent"];

        NSDictionary *dictionary = @{@"UserAgent":newUA};

        [[NSUserDefaults standardUserDefaults] registerDefaults:dictionary];

    });

}

-(void)loadView

{

    [super loadView];

    [WebViewController registUserAgent];

if(!webView)

    {

        webView = [[UIWebView alloc] initWithFrame:self.view.bounds];

        webView.delegate=self;

        if([[[UIDevice currentDevice] systemVersion] floatValue]>6.9)

        webView.frame = CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height-20);

        NSString* urlString = @"你的网址";

        [webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:urlString]]];

    }

    [self.view addSubview:webView];

}

- (void)viewDidLoad

{

    [super viewDidLoad];

// Do any additional setup after loading the view.

}

- (void)didReceiveMemoryWarning

{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

- (void)reload{

    [webView reload];

}

@end

UIWebView自定义user agent