在项目中嵌入了一个修改密码的界面 浏览器中直接打开界面大致是这样：
在项目中我们有导航栏 上面的一部分“重置密码”这些字不需要显示出来
界面大致这样：
这个时候我们可以使用userAgent
在请求头中修改给字段，当请求响应这个界面是根据这一个字段判断是不是移动设备
代码如下：
<pre>
import "ForgotPasswordViewController.h"
@interface ForgotPasswordViewController ()<UIWebViewDelegate,NSURLConnectionDataDelegate,NSURLConnectionDelegate>
{
UIWebView *_webview;
}
@end
@implementation ForgotPasswordViewController
(instancetype)init{
self = [super init];
if (self) {
UIWebView *webview = [[UIWebView alloc] initWithFrame:CGRectZero];
NSString *oldAgent = [webview stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"];
NSLog(@"old agent :%@", oldAgent);
NSString *newAgent = [oldAgent stringByAppendingString:@"约定好的字段这里就以abcd表示"];
NSLog(@"new agent :%@", newAgent);
NSDictionary *dictionnary = [[NSDictionary alloc] initWithObjectsAndKeys:newAgent, @"UserAgent", nil];
[[NSUserDefaults standardUserDefaults] registerDefaults:dictionnary];
}
return self;
}-
(void)viewDidLoad {
[super viewDidLoad];self.view.backgroundColor = [UIColor whiteColor];
_webview = [[UIWebView alloc] initWithFrame:self.view.bounds];
_webview.scalesPageToFit = YES;
_webview.scrollView.scrollEnabled = NO;
_webview.delegate =self;
[self.view addSubview:_webview];
NSURL *url = [NSURL URLWithString:
[NSString stringWithFormat:@"网页地址"]];NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
[request addValue:@"约定好的字段这里就以abcd表示"forHTTPHeaderField:@"UserAgent"];
[_webview loadRequest:request];NSString *oldAgent = [_webview stringByEvaluatingJavaScriptFromString:@"navigator.userAgent"];
NSLog(@"old agent :%@", oldAgent);
}
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
//导航栏中显示网页的标题
self.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
</pre>
