直接上代码：
第一种方法：
self.wkWebView =[[WKWebView alloc] initWithFrame:self.view.bounds];
__weaktypeof(self) weakSelf =self;
[self.webView evaluateJavaScript:@"navigator.userAgent"completionHandler:^(idresult, NSError *error) {
__strongtypeof(weakSelf) strongSelf =weakSelf;
NSString*userAgent =result;
NSString*newUserAgent = [userAgent stringByAppendingString:@"Appended Custom User Agent"];
NSDictionary*dictionary = [NSDictionary dictionaryWithObjectsAndKeys:newUserAgent,@"UserAgent", nil];
[[NSUserDefaults standardUserDefaults] registerDefaults:dictionary];
strongSelf.webView=[[WKWebView alloc] initWithFrame:strongSelf.view.bounds];//After this point the web view will use a custom appended user agent[strongSelf.webView evaluateJavaScript:@"navigator.userAgent"completionHandler:^(idresult, NSError *error) {
NSLog(@"%@", result);
}];
}];
亲测结果：
Mozilla/5.0 (iPhone; CPU iPhone OS 9_3_5 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13G36 Appended Custom User Agent
第二种方法：
UIWebView *webViews =[[UIWebView alloc] initWithFrame:self.view.bounds];
NSString*userAgent = [webViews stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"];
NSString*newUserAgent = [userAgent stringByAppendingString:@"Appended Custom User Agent"];
NSDictionary*dictionary = [NSDictionary dictionaryWithObjectsAndKeys:newUserAgent,@"UserAgent", nil];
[[NSUserDefaults standardUserDefaults] registerDefaults:dictionary];
self.webView=[[WKWebView alloc] initWithFrame:self.view.bounds];
[self.webView evaluateJavaScript:@"navigator.userAgent"completionHandler:^(idresult, NSError *error) {
NSLog(@"%@", result);
}];
结果：
Mozilla/5.0 (iPhone; CPU iPhone OS 9_3_5 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13G36 Appended Custom User Agent
这种方法使UIWebView和WKWebView使用相同的用户代理,但这种方法可能会导致问题。
转载自http://www.cnblogs.com/jiangshengkai/p/5863834.html