1. 支付功能

第一步：配置一些基本設置

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
      //設置微信的appKey和appSecret
    [[UMSocialManager defaultManager] setPlaform:UMSocialPlatformType_WechatSession appKey:KWechatKey appSecret:KWechatAppSecret redirectURL:@"http://mobile.umeng.com/social"];

}

第二步：

- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication
         annotation:(id)annotation {

if ([url.host isEqualToString:@"safepay"]) {
        //跳轉支付寶錢包進行支付，處理支付結果
        [[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:^(NSDictionary *resultDic) {
            NSLog(@"result = %@",resultDic);

            NSString *dic = [resultDic objectForKey:@"result"];
            NSData *jsonData = [dic dataUsingEncoding:NSUTF8StringEncoding];
            NSDictionary *jsonDic = [NSJSONSerialization JSONObjectWithData:jsonData
                                                                options:NSJSONReadingMutableContainers
                                                                  error:nil];

            int  staute = [resultDic intValueForKey:@"resultStatus"];
            switch (staute) {
                case 9000:
                    [self requsetPay:[jsonDic objectForKey:@"sign"]];
                    break;
                case 8000:
                    SHOW_MESSAGE_VIEW(nil, @"正在處理中", @"確定", nil);
                    break;
                case 4000:
                    SHOW_MESSAGE_VIEW(nil, @"訂單支付失敗", @"確定", nil);
                    break;
                case 6001:
                    SHOW_MESSAGE_VIEW(nil, @"用戶中途取消", @"確定", nil);
                    break;
                case 6002:
                    SHOW_MESSAGE_VIEW(nil, @"網絡連接出錯", @"確定", nil);
                    break;
                default:
                    break;
            }

        }];
    } else if([[url absoluteString] hasPrefix:@"wx"]) {

        return [WXApi handleOpenURL:url delegate:self];

    }

}

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
{
    if ([[url absoluteString] hasPrefix:@"tencent"]) {

        return [TencentOAuth HandleOpenURL:url];

    }else if([[url absoluteString] hasPrefix:@"wb"]) {

        return [WeiboSDK handleOpenURL:url delegate:self];

    }else if([[url absoluteString] hasPrefix:@"wx"]){

        return [WXApi handleOpenURL:url delegate:self];

    }
}

第三步：

-(void)onResp:(BaseResp*)resp{
    if([resp isKindOfClass:[PayResp class]])
    {
        //支付返回結果，實際支付結果需要去微信服務器端查詢
        PayResp * payResult = (PayResp *)resp;
        [[NSNotificationCenter defaultCenter] postNotificationName:WXPAY_NOTIFICATION object:self userInfo:[NSDictionary dictionaryWithObject:payResult forKey:@"wxPayReturn"]];
    }
}

第四步：
在支付頁面中，添加通知喔~~

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(weixinPayReturn:) name:WXPAY_NOTIFICATION object:nil];

//微信支付后的返回
-(void)weixinPayReturn:(NSNotification *)info
{
    PayResp * result = [info.userInfo objectForKey:@"wxPayReturn"];

    switch (result.errCode) {
        case WXSuccess:

            [self performSelector:@selector(checkThePayResult) withObject:self afterDelay:1.0];

            [self showMyMessage:@"支付結果：成功！"];

            break;

        default:

          [self showMyMessage: [NSString stringWithFormat:@"支付結果：失敗"]];
            NSLog(@"錯誤，retcode = %d, retstr = %@", result.errCode,result.errStr);
            break;
    }

}

-(void)checkThePayResult{
    //處理服務器的請求了(一般是支付成功后的回調接口)
    [self requsetPay:@""];
}

第五步：很重要的 (點擊支付按鈕的事件)

-(void)payMethodWithUserPay;
{
    NSString *url;
    if (style ==1) {
       url = [NSString stringWithFormat:@"%@Pay/Wxpay?order_number=%@&user_id=%@&token=%@",HaoSe_URL,self.model.order_number,USERID,TOKEN];
    }else{
      url = [NSString stringWithFormat:@"%@Pay/getSignStr?order_number=%@&user_id=%@&token=%@",HaoSe_URL,self.model.order_number,USERID,TOKEN];
    }

    [commonSet post:url params:nil success:^(id json) {
        NSDictionary *result = json;
        if (style ==1) {
            //調起微信支付
            NSDictionary *dic = [result objectForKey:@"data"];

            WXPayData* req          = [[WXPayData alloc] init];
            req.openID              = [dic stringForKey:@"appId"];
            req.partnerId          = [dic stringForKey:@"partnerid"];//商戶ID
            req.prepayId            = [dic stringForKey:@"prepayid"];
            req.nonceStr            = [dic stringForKey:@"noncestr"];
            req.timeStamp          = [dic intValueForKey:@"timestamp"];
            req.package            = @"Sign=WXPay";
//            req.spKey               = [result stringForKey:@"key"];
//            req.tradeNo             = [result stringForKey:@"tradeNo"];
            //生成簽名
//            NSString *sign  = [GlobalTools createMd5Sign:req];
            NSString *sign =    [dic stringForKey:@"sign"];
            req.sign                = sign;
//            _tradeNo                = req.tradeNo;

            PayReq* payData = [[PayReq alloc] init];
            payData = req;

            if ([WXApi sendReq:payData])
            {
                NSLog(@"微信支付發送成功");
            }else
            {
                NSLog(@"微信支付發送失敗");
            }


        }else{

            NSString *params = [[result objectForKey:@"data"]objectForKey:@"params"];

//            Order *zhifuOrder = [[Order alloc] initWithDictionary:params];
//            zhifuOrder.privateKey = [[result objectForKey:@"data"] objectForKey:@"key"];
//            NSString *orderSpec = [zhifuOrder description];
//
            NSString *key = [[result objectForKey:@"data"]objectForKey:@"key"];

            //獲取私鑰并將商戶信息簽名,外部商戶可以根據情況存放私鑰和簽名,只需要遵循RSA簽名規范,并將簽名字符串base64編碼和UrlEncode
            id<DataSigner> signer = CreateRSADataSigner(key);
            NSString *signedString = [signer signString:params];
            NSString *appScheme = @"alisdkdemo";
            //將簽名成功字符串格式化為訂單字符串,請嚴格按照該格式
            NSString *orderString = nil;
            if (key != nil) {
                orderString = [NSString stringWithFormat:@"%@&sign=\"%@\"&sign_type=\"%@\"",
                               params, signedString, @"RSA"];

                [[NSUserDefaults standardUserDefaults]setObject:_model.order_number forKey:@"order"];
                //調支付寶
                [[AlipaySDK defaultService] payOrder:orderString fromScheme:appScheme callback:^(NSDictionary *resultDic) {
                    NSLog(@"reslut = %@",resultDic);
                    int  staute = [resultDic intValueForKey:@"resultStatus"];

                    NSString *dic = [resultDic objectForKey:@"result"];

                    switch (staute) {
                        case 9000:
                             [self requsetPay:dic];
                            break;
                        case 8000:
                            SHOW_MESSAGE_VIEW(nil, @"正在處理中", @"確定", nil);
                            break;
                        case 4000:
                            SHOW_MESSAGE_VIEW(nil, @"訂單支付失敗", @"確定", nil);
                            break;
                        case 6001:
                            SHOW_MESSAGE_VIEW(nil, @"用戶中途取消", @"確定", nil);
                            break;
                        case 6002:
                            SHOW_MESSAGE_VIEW(nil, @"網絡連接出錯", @"確定", nil);
                            break;
                        default:
                            break;
                    }

                }];
            }
        }

    } failure:^(NSError *error) {

    }];

}