- (void)openWebView{    if (timer) {        [timer invalidate];    }    timer = [NSTimer scheduledTimerWithTimeInterval:10.0 target:self selector:@selector(timerFunction) userInfo:nil repeats:NO];        if (!webViewFirst) {        webViewFirst = [[UIWebView alloc] init];        webViewFirst.frame = CGRectMake(0, 0, ivWelcome.frame.size.width, ivWelcome.frame.size.height);        webViewFirst.backgroundColor = [UIColor whiteColor];        webViewFirst.delegate = self;        webViewFirst.hidden = YES;        [webViewFirst loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[kGlobal getLoadingUrl]]]];        [ivWelcome addSubview:webViewFirst];        UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];        btn.frame = CGRectMake(0, 0, ivWelcome.frame.size.width, ivWelcome.frame.size.height);        btn.backgroundColor = [UIColor clearColor];        btn.enabled = NO;        [btn addTarget:self action:@selector(initLoginView) forControlEvents:UIControlEventTouchUpInside];        [ivWelcome addSubview:btn];        btnSkip = btn;    }    else {        webViewFirst.hidden = YES;        [webViewFirst reload];    }}- (void)webViewDidFinishLoad:(UIWebView *)webView{    if (timer) {        [timer invalidate];    }    btnSkip.enabled = YES;    webViewFirst.hidden = NO;    {//添加淡入淡出动画        CATransition *animation = [CATransition animation];        //animation.delegate = self;        // 设定动画时间        animation.duration = 0.7;        // 设定动画快慢(开始与结束时较慢)        animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];        animation.type = kCATransitionFade;        [webViewFirst.layer addAnimation:animation forKey:@"animation"];    }}- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{    [self timerFunction];}- (void)timerFunction{    if (timer) {        [timer invalidate];    }    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示" message:@"网络不给力，请重试" delegate:kAPPDELEGATE cancelButtonTitle:@"重试" otherButtonTitles:nil];    [alert show];}