是否接受UIWebView中的Cookie？ [英] Are cookies in UIWebView accepted?

问题描述

我要问你。

1：我在我的iPhone应用程序中使用UIWebViews。我不能让用户在新闻中添加评论。但是，要注释他们必须登录。

1 : I'm using UIWebViews in my iPhone App. I wan't the users be able to add comments in the news. But, to comment they have to log-in.

如果没有，如何接受UIWebViews中的Cookie？

If not, how can I accept cookies in UIWebViews ?

2：在其他视图中的UIWebView？

2 : Are the cookies created in on UIWebView available in others UIWebView in an other View ?

例如：我有我的LoginViewController，嵌入UIWebView，我的用户可以登录/注销。如果他们在这个视图中登录，该Cookie将仍然在CommentViewController中可用？

Ex : I have my LoginViewController, with an embedded UIWebView, where my user can login/logout. If they log-in in this view, the cookie will be still available in the CommentViewController ?

如果没有，我该如何做到？

If not, how can I make this possible ?

提前感谢！

推荐答案

UIWebView 会自动将cookie存储在 [NSHTTPCookieStorage sharedHTTPCookieStorage] 集合中，并且应该在所有其他 UIWebView 在您的应用程序内，在同一个应用程序启动。但是， UIWebView 类不会自动存储在应用启动之间加载的页面的Cookie。您需要在应用移动到后台时手动保存Cookie，并在应用返回到前台时重新载入值。

The UIWebView will automatically store the cookies in the [NSHTTPCookieStorage sharedHTTPCookieStorage] collection, and should be available in all other UIWebViews within your app, during the same app launch. However the UIWebView class does not automatically store cookies for the pages that are loaded between app launches. You need to manually store cookies when the app is moved into the background and reload the values when the app is brought back into the foreground.

将以下代码放在AppDelegate中class：

Place the following code in your AppDelegate class:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    //Other existing code

    [self loadHTTPCookies];
    return YES;
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    //Other existing code

    [self saveHTTPCookies];
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    [self loadHTTPCookies];
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    //Other existing code
    [self saveHTTPCookies];
}

-(void)loadHTTPCookies
{
    NSMutableArray* cookieDictionary = [[NSUserDefaults standardUserDefaults] valueForKey:@"cookieArray"];

    for (int i=0; i < cookieDictionary.count; i++)
    {
        NSMutableDictionary* cookieDictionary1 = [[NSUserDefaults standardUserDefaults] valueForKey:[cookieDictionary objectAtIndex:i]];
        NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieDictionary1];
        [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
    }
}

-(void)saveHTTPCookies
{
    NSMutableArray *cookieArray = [[NSMutableArray alloc] init];
    for (NSHTTPCookie *cookie in [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]) {
        [cookieArray addObject:cookie.name];
        NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];
        [cookieProperties setObject:cookie.name forKey:NSHTTPCookieName];
        [cookieProperties setObject:cookie.value forKey:NSHTTPCookieValue];
        [cookieProperties setObject:cookie.domain forKey:NSHTTPCookieDomain];
        [cookieProperties setObject:cookie.path forKey:NSHTTPCookiePath];
        [cookieProperties setObject:[NSNumber numberWithUnsignedInteger:cookie.version] forKey:NSHTTPCookieVersion];
        [cookieProperties setObject:[[NSDate date] dateByAddingTimeInterval:2629743] forKey:NSHTTPCookieExpires];

        [[NSUserDefaults standardUserDefaults] setValue:cookieProperties forKey:cookie.name];
        [[NSUserDefaults standardUserDefaults] synchronize];

    }

    [[NSUserDefaults standardUserDefaults] setValue:cookieArray forKey:@"cookieArray"];
    [[NSUserDefaults standardUserDefaults] synchronize];
}

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