对微信支付和支付宝支付SDK的封装

微信支付有提供的pod库提供使用，但是只提供了唤起微信app进行支付。但是想要在唤起的时候获取支付结果，无法获取。当然你在分享的时候想获取分享结果也是一个未知数。so，今天来解决一下.

notice:两平台处理方式基本一样

1：支付平台的流程图

2：支付闭环图

3：对于微信支付的封装

3.1注册微信appid和遵循支付宝支付的网页支付结果的代理

- (void)setPaySDKAppIDWithweChat:(NSString *)weChatID delegate:(id<GZIMPayWebAliPayDelegate>) delegate {
    [[GZPayConfigURL defaultMannage] configURL];
    if (weChatID) {
        [WXApi registerApp:weChatID];
        self.weCahtPayAppKey = weChatID;
    }
    self.AliPayHelper = [[MSAlipayHelper alloc] init];
    self.WebaliPayDelegate = delegate;
}
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注意:这里的GZIMPayWebAliPayDelegate是针对支付宝网页支付的回调结果。

3.2唤起微信支付

/**
 唤起微信支付
 
 @param payRequest 唤起微信支付要传入的参数对象，
 **自行校验是否为空数据
 */
- (void)WakeupWeChatPay:(GZIMPayPayRequest *)payRequest handler:(GZIMPayInfo *)userInfo weChatResult:(void(^)(GZIMPayErrorCode code,NSString * msg,GZIMPayInfo * userInfo))weChatResult {
    self.userInfo = userInfo;
    PayReq *request = [[PayReq alloc] init];
    request.openID = payRequest.openID;
    request.partnerId = payRequest.partnerId;
    request.prepayId= payRequest.prepayId;
    request.package = payRequest.package;
    request.nonceStr= payRequest.nonceStr;
    request.timeStamp = [payRequest.timeStamp intValue];
    request.sign= payRequest.sign;
    
    // 调用微信
    [WXApi sendReq:request];
    self.weChatResult = weChatResult;
}
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3.3 获取微信支付结果回调

/**
 微信支付回调

 @param url url
 @param weChatResult 处理结果回调
 @return bool
 */
- (BOOL)weChatHandleOpenUrl:(NSURL *)url weChatResult:(void(^)(GZIMPayErrorCode code,NSString * msg,GZIMPayInfo * userInfo))weChatResult {
    // *****注意这里的block*****
    self.weChatDelegateResult = weChatResult;
    if ([url.scheme isEqualToString:self.weCahtPayAppKey] && [url.host isEqualToString:@"pay"]) {
      return  [WXApi handleOpenURL:url delegate:(id<WXApiDelegate>)self];
    }
    return NO;
}
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3.4 唤起支付宝支付

/**
 -唤起支付宝支付
 
 @param payOrderString 唤起支付宝要传入的参数，
 */
- (void)WakeupAliPay:(NSString *)payOrderString handlerInfo:(GZIMPayInfo *)userInfo {
    if (payOrderString) {
        self.userInfo = userInfo;
        [self.AliPayHelper WakeupAliPayPay:payOrderString fromScheme:GZPAY_ALIPAY_SCHEME handler:^(NSDictionary *result) {
            
            GZIMPayErrorCode  payCode = GZIMPaySuccess;
            NSString * msg = @"用户支付成功";
            if([@"9000" isEqualToString:[result objectForKey:@"resultStatus"]]) {
                payCode = GZIMPaySuccess;
                msg = @"用户支付成功";
            } else if([@"6001" isEqualToString:[result objectForKey:@"resultStatus"]]) {
                payCode = GZIMPayCancle;
                msg = @"用户中途取消";
            } else {
                payCode = GZIMPayFaile;
                msg = @"用户支付失败";
            }
            if (self.WebaliPayDelegate && [self.WebaliPayDelegate respondsToSelector:@selector(GZIMPaySDK:payCode:payMsg:forUserInfo:)]) {
                [self.WebaliPayDelegate GZIMPaySDK:self payCode:payCode payMsg:msg forUserInfo:self.userInfo];
            }

        }];
    }
}
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3.5 唤起支付宝支付回调结果

/**
 支付结果回调
 
 @param resultUrl handelrURL
 @param completionBlock 支付结果回调Block
 */
- (void)aliPayHandlerResultURL:(NSURL *)resultUrl standbyCallback:(CompletionSDKBlock)completionBlock {
    if ([resultUrl.host isEqualToString:@"safepay"]) {
        [self.AliPayHelper aliPayHandlerResultURL:resultUrl standbyCallback:completionBlock];
    }
}
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3.6 支付结果统一回调

/**
 支付结果统一回调

 @param url url
 @param handler 回调
 */
- (void)GZIMPayHandlerOpenUrl:(NSURL *)url handler:(void(^)(GZIMPayErrorCode code, NSString * msg,GZIMPayInfo* payInfo))handler {
    // 支付宝
    [self aliPayHandlerResultURL:url standbyCallback:^(NSDictionary *resultDic) {
        // 订单支付成功
        if([@"9000" isEqualToString:[resultDic objectForKey:@"resultStatus"]]) {
            if (handler) {
                handler(GZIMPaySuccess,@"用户支付成功",self.userInfo);
            }
        } else if([@"6001" isEqualToString:[resultDic objectForKey:@"resultStatus"]]) {
            // 用户中途取消
            if (handler) {
                handler(GZIMPayCancle,@"用户中途取消",self.userInfo);
            }
        } else {
            if (handler) {
                handler(GZIMPayCancle,@"用户支付失败",self.userInfo);
            }
        }
    }];
    
    // 微信
    [self weChatHandleOpenUrl:url weChatResult:^(GZIMPayErrorCode code,NSString * msg, GZIMPayInfo *userInfo) {
        if (handler) {
            handler(code,msg,userInfo);
        } 
    }];
}
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3.7 支付回调代理函数

- (void)onResp:(BaseResp *)resp
{
    if([resp isKindOfClass:[PayResp class]]){
        NSString *strMsg;
        switch (resp.errCode) {
            case WXSuccess:
                strMsg = @"支付结果：成功！";
                NSLog(@"支付成功－PaySuccess，retcode = %d", resp.errCode);
                if (self.weChatResult) {
                    self.weChatResult(GZIMPaySuccess,@"用户支付成功",self.userInfo);
                    self.weChatResult = nil;
                }
                if (self.weChatDelegateResult) {
                    self.weChatDelegateResult(GZIMPaySuccess,@"用户支付成功",self.userInfo);
                    self.weChatDelegateResult = nil;
                }
                break;
            case WXErrCodeUserCancel:
                strMsg = @"支付结果：取消！";
                NSLog(@"支付取消－PayCancle，retcode = %d", resp.errCode);
                if (self.weChatResult) {
                    self.weChatResult(GZIMPayCancle,@"用户中途取消",self.userInfo);
                    self.weChatResult = nil;
                }
                if (self.weChatDelegateResult) {
                    self.weChatDelegateResult(GZIMPayCancle,@"用户中途取消",self.userInfo);
                    self.weChatDelegateResult = nil;
                }
                break;
                
            default:
                strMsg = [NSString stringWithFormat:@"支付结果：失败！retcode = %d, retstr = %@", resp.errCode,resp.errStr];
                NSLog(@"错误，retcode = %d, retstr = %@", resp.errCode,resp.errStr);
                if (self.weChatResult) {
                    self.weChatResult(GZIMPayFaile,@"用户支付失败",nil);
                    self.weChatResult = nil;
                }
                if (self.weChatDelegateResult) {
                    self.weChatDelegateResult(GZIMPayFaile,@"用户支付失败",nil);
                    self.weChatDelegateResult = nil;
                }
                break;
        }
    }
}
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注意这里的有两个block针对微信支付回调结果返回时.注意3.3步骤里的block。大概原因：由于两个block加载时机不同会被替换，由此引起的不会执行对应的block。

有些地方说的不到位，还请各位看官指正。。。

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