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在ios uiwebview objective-c中检查布尔值是否为yes或no时出错

uiwebview objective-c ios

-1

Peter · 技术社区 · 7 年前

我正在尝试检查在IOS UIWebView中加载的URL是否有错误,如果 200 我要设置 isRequestWebOk 到 YES 否则我将使用默认值 NO ,除了 isRequestWebOk 仍然返回 不 即使状态码是200,我也会设置它 if(200){isRequestWebOk = YES;} 。请任何人帮我一下,我不知道为什么工作不正常。

-(BOOL) webView:(UIWebView *)inWeb shouldStartLoadWithRequest:(NSURLRequest *)inRequest navigationType:(UIWebViewNavigationType)inType{
    static BOOL isRequestWeb = YES;
    static BOOL isRequestWebOk = NO;
    NSString *embedHTML = @"<html><head></head><body style='color:#000;'><p>Error</p></body></html>";

    if (isRequestWeb) {
        //NSHTTPURLResponse *response = nil;
        //NSData *data = [NSURLConnection sendSynchronousRequest:inRequest returningResponse:&response error:nil];
        //if (response.statusCode == 404) {}

        [[[NSURLSession sharedSession] dataTaskWithRequest:inRequest completionHandler:^(NSData * data, NSURLResponse * response, NSError * error) {
            NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
            NSInteger statusCode = httpResponse.statusCode;
            if (statusCode >= 200 && statusCode < 300){
                /*I think this do set but i can't access it outside the completionHandler but i really need to check it outside as i cannot do many other things inside here*/
                isRequestWebOk = YES;
                NSLog(@"GOOD");
            }else if (statusCode == 404) {
                NSLog(@"code for 404");
            }else if (statusCode == 403) {
                NSLog(@"code for 403");
            }else if (statusCode == 500) {
                NSLog(@"code for 500");
            }else{
                NSLog(@"code for ALL");
                isRequestWebOk = YES;
            }
            NSLog(@"code is what: %ld", (long)statusCode);
        }] resume];
        isRequestWeb = NO;

        /*This is where am checking for isRequestWebOk if true or not but it always return false*/
        if(isRequestWebOk){
            NSLog(@"Request is okay 200");
            return YES;
        }else{
            NSLog(@"Bad Request b4004");
            inWeb.userInteractionEnabled = NO;
            inWeb.opaque = NO;
            inWeb.backgroundColor = [UIColor clearColor];
            [inWeb loadHTMLString: embedHTML baseURL: nil];
            return NO;
        }
    }
    return YES;
}

我认为这个确实设置了,但我不能在completionHandler之外访问它,但我真的需要在外面检查它,因为我不能在里面做很多其他事情

1 回复 | 直到 7 年前

Mo Abdul-Hameed Martheli 7 年前

您需要移动此代码块:

if(isRequestWebOk){
    NSLog(@"Request is okay 200");
    return YES;
}else{
    NSLog(@"Bad Request b4004");
    inWeb.userInteractionEnabled = NO;
    inWeb.opaque = NO;
    inWeb.backgroundColor = [UIColor clearColor];
    [inWeb loadHTMLString: embedHTML baseURL: nil];
    return NO;
}

到内部 completionHandler 。

您在此处检查时,如果 isRequestWebOk 是 YES 或 NO 请求可能仍在进行中。