objective-c - iOS : Force UIWebView to reload/prevent caching

Question

我有一个显示网站的 iPhone 应用程序。该网站会不时更改其内容，但我的应用程序不会在每次打开时都重新加载。我试图阻止网站的缓存，但没有成功。

这是我的初始化方法:

- (id)init:(NSString *)url withTitle:(NSString *)theTitle withPageName:(NSString *)pageName {
    self = [super init];
    if(self) {
        NSLog(@"websiteviewcontroller init");
        self.title = theTitle;
        self.url = url;
        self.pageName = pageName;

        CGRect frame = [[UIScreen mainScreen] applicationFrame];
        webView = [[UIWebView alloc] initWithFrame:frame];

        NSURL *theURL = [NSURL URLWithString:url];
        [webView loadRequest:[NSURLRequest requestWithURL:theURL]]; 

        // support zooming
        webView.scalesPageToFit = YES;

                //[[NSURLCache sharedURLCache] removeAllCachedResponses];
                [webView reload];

    }
    return self;
}

这是我的 viewWillAppear 方法:

- (void)viewWillAppear:(BOOL)animated {

    CGRect frame = [[UIScreen mainScreen] applicationFrame];
    webView = [[UIWebView alloc] initWithFrame:frame];

    NSURL *theURL = [NSURL URLWithString:url];
    [webView loadRequest:[NSURLRequest requestWithURL:theURL]]; 

    [webView reload];

    // support zooming
    webView.scalesPageToFit = YES;
}

请帮我解决这个问题。非常感谢所有答案。

Answer 1

这段代码片段解决了我的问题:

[[NSURLCache sharedURLCache] removeAllCachedResponses];