1 #import "WXApi.h"
 2 #import "WXApiObject.h"
 3 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
 4 
 5     // 1.注册微信
 6     [WXApi registerApp:WECHAT_APPID withDescription:@"weichatpayblog"];
 7  
 8     return YES;
 9 }
10 
11 - (BOOL)application:(UIApplication *)application
12             openURL:(NSURL *)url
13   sourceApplication:(NSString *)sourceApplication
14          annotation:(id)annotation
15 {
16         return [WXApi handleOpenURL:url delegate:self];
17 }
18 
19 - (void)onResp:(BaseResp *)resp
20 {
21     NSString *strMsg = [NSString stringWithFormat:@"errcode:%d",resp.errCode];
22     NSString *strTitle;
23     NSString *strNote;
24     if ([resp isKindOfClass:[PayResp class]]) {
25         // 支付返回结果,实际支付结果需要去微信服务器端查询
26         strTitle = @"支付结果";
27     }
28     
29     switch (resp.errCode) {
30         case WXSuccess:{
31             strMsg = @"支付成功,可以进行洗车";
32             strNote = @"success";
33             break;
34         }
35         case WXErrCodeUserCancel:
36             strMsg = @"支付已取消";
37             strNote = @"cancel";
38             break;
39         case WXErrCodeSentFail:
40             strMsg = @"支付失败,请重新支付";
41             strNote = @"fail";
42             break;
43         default:{
44             strMsg = @"支付失败";
45             strNote = @"fail";
46             break;
47         }
48     }
49     
50 //    NSNotification *notification = [NSNotification notificationWithName:ORDER_PAY_NOTIFICATION object:strNote];
51 //    [[NSNotificationCenter defaultCenter] postNotification:notification];
52     [[NSNotificationCenter defaultCenter] postNotificationName:ORDER_PAY_NOTIFICATION object:strNote];
53     [Alert showWithTitle:strMsg];
54 }
55 
56 - (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url
57 {
58     return [WXApi handleOpenURL:url delegate:self];
59 }

  1 #import "WXApi.h"
  2 #import "WXApiObject"
  3 #import "WXUtil.h"
  4 - (void)clickPayWithWechat
  5 {
  6 
  7         // 判断客户端是否安装微信/版本是否支持 
  8     if ([self isWXAppInstalled]) {
  9 
 10         [self updateOrderInfo];
 11     }
 12     
 13 }
 14 
 15 - (BOOL)isWXAppInstalled
 16 {
 17     // 1.判断是否安装微信
 18     if (![WXApi isWXAppInstalled]) {
 19         [Alert showWithTitle:@"您尚未安装\"微信App\",请先安装后再返回支付"];
 20         return NO;
 21     }
 22     
 23     // 2.判断微信的版本是否支持最新Api
 24     if (![WXApi isWXAppSupportApi]) {
 25         [Alert showWithTitle:@"您微信当前版本不支持此功能,请先升级微信应用"];
 26         return NO;
 27     }
 28     return YES;
 29 }
 30 
 31 // 
 32 - (void)updateOrderInfo
 33 {
 34     // 调用自己后台接口
 35        返回 prePay_id      
 36 }
 37 
 38 - (void)updateOrderInfoToWechat
 39 {
 40     // wechatModel 为自定义模型 存储微信支付所需参数
 41     if (wechatModel.prepay_id != nil) {
 42         DLog(@" %@ ",wechatModel.prepay_id);
 43         NSString *package, *time_stamp, *nonce_str;
 44         time_t now;
 45         time(&now);
 46         time_stamp = [NSString stringWithFormat:@"%ld",now];
 47     // WXUtil类 可留言,我发邮箱   或加我qq   343381934 注明博客园 微信支付
 48         nonce_str = [WXUtil md5:time_stamp];
 49         package = @"Sign=WXPay";
 50         NSMutableDictionary *signParams = [NSMutableDictionary dictionary];
 51         [signParams setObject:WECHAT_APPID forKey:@"appid"];
 52         [signParams setObject:nonce_str forKey:@"noncestr"];
 53         [signParams setObject:package forKey:@"package"];
 54         [signParams setObject:WECHAT_MCH_ID forKey:@"partnerid"];
 55         [signParams setObject:time_stamp forKey:@"timestamp"];
 56         [signParams setObject:wechatModel.prepay_id forKey:@"prepayid"];
 57         NSString *sign = [self createMd5Sign:signParams]
 58         ;
 59         [signParams setObject:sign forKey:@"sign"];

// 这里 调起微信  一个参数也不能少  重要的事 我不想说三遍了,调不起会来看三遍的 哈哈哈....
 60         PayReq *req = [[PayReq alloc] init];
 61         req.openID = WECHAT_APPID;
 62         req.partnerId = WECHAT_MCH_ID;
 63         req.prepayId = wechatModel.prepay_id;
 64         req.nonceStr = nonce_str;
 65         req.timeStamp = time_stamp.intValue;
 66         req.package = package;
 67         req.sign = sign;
 68         [WXApi sendReq:req];
 69     }    
 70 }
 71 
 72 -(NSString*) createMd5Sign:(NSMutableDictionary*)dict
 73 {
 74     NSMutableString *contentString  =[NSMutableString string];
 75     NSArray *keys = [dict allKeys];
 76     //按字母顺序排序
 77     NSArray *sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
 78         return [obj1 compare:obj2 options:NSNumericSearch];
 79     }];
 80     //拼接字符串
 81     for (NSString *categoryId in sortedArray) {
 82         if (   ![[dict objectForKey:categoryId] isEqualToString:@""]
 83             && ![categoryId isEqualToString:@"sign"]
 84             && ![categoryId isEqualToString:@"key"]
 85             )
 86         {
 87             [contentString appendFormat:@"%@=%@&", categoryId, [dict objectForKey:categoryId]];
 88         }
 89         
 90     }
 91     //添加key字段
 92     [contentString appendFormat:@"key=%@", wechatModel.key];
 93     //得到MD5 sign签名
 94     NSString *md5Sign =[WXUtil md5:contentString];
 95     
 96 //    //输出Debug Info
 97 //    [debugInfo appendFormat:@"MD5签名字符串：\n%@\n\n",contentString];
 98     
 99     return md5Sign;
100 }