@interface HJH5WebPayManager()

@property (nonatomic,strong) UIWebView *payWebview;

@property (nonatomic,strong) void(^sendPayResult)(HJH5SendWebPayResult);

@end

@implementation HJH5WebPayManager

+(instancetype)sharedInstance{
 static dispatch_once_t once ;
 static HJH5WebPayManager *_instace = nil;
 dispatch_once(&once, ^{
 _instace = [[self alloc] init];
 });
 return _instace;
}

-(void)loadWebPayTransitionPage:(NSString *)html handleBlock:(void (^)(HJH5SendWebPayResult))handle{
 NSMutableURLRequest *request = nil;
 if ([html hasPrefix:@"https://wx.tenpay.com"]) {
 //微信安全域名
 NSString *wxScheme = @"";
 NSString *referer = [NSString stringWithFormat:@"%@://",wxScheme];
 //将redirect_url替换成scheme,微信支付完毕才能跳回APP，否则会打开Safari浏览器(因为redirect_url一般为一个HTTP的地址)
 NSRange range = [html rangeOfString:@"redirect_url="];
 NSString *reqUrl;
 if (range.length>0) {
  reqUrl = [html substringToIndex:range.location+range.length];
  reqUrl = [reqUrl stringByAppendingString:referer];
 }else{
  reqUrl = [html stringByAppendingString:[NSString stringWithFormat:@"&redirect_url=%@",referer]];
 }
 request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:reqUrl] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
 //设置授权域名，伪造Referer头，因为微信中间页会检验Referer头，并且Referer对应的值需要包含安全域名
 [request setValue:referer forHTTPHeaderField:@"Referer"];
 if (self.payWebview) {
  [self.payWebview removeFromSuperview];
  self.payWebview = nil;
 }
 self.payWebview = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 0.1, 0.1)];
 self.sendPayResult = handle;
 [[UIApplication sharedApplication].keyWindow addSubview:self.payWebview];
 self.payWebview.delegate = self;
 [self.payWebview loadRequest:request];
 }else if ([html hasPrefix:@"
 n"
    " n"
    " n"
    " n"
    " n"
    ""
    "%@"
    ""
    "