说明：微信支付是以跳转到微信客户端的形式实现的。
下面以微信官方demo提供的appid为例进行集成。
第一步：设置URL type
6A9D814A-ECE5-4680-8B69-347F793AC0CA.png
URL Schemes 填写申请得到的appid
第二步：导入API
41B153C1-B884-4F6C-BF5B-E8C8CDD75FEA.png
第三步：导入链接库
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后缀名为.dylib的文件可以根据以下操作导入：
FB9AA09D-1D9E-4274-A98F-99D7C3493E58.png
点击Add Other...后，按快捷键command+shift+G出现如下画面，按照图中的地址搜索即可：
E2337D2C-C96C-4BC8-8FD9-5F185F2A2757.png
第四步：设置白名单
89BB60F9-91A8-45D1-AEDB-49A52FFA6004.png
第五步：向微信注册
#import "WXApi.h"
遵守WXApiDelegate代理
注册：
- (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// 注册微信
[WXApi registerApp:@"appKey" withDescription:@"demo 2.0"];
return YES;
}
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
return [WXApi handleOpenURL:url delegate:self];
}
第六步：回调处理
- (void)onResp:(BaseResp *)resp {
NSString *strMsg = [NSString stringWithFormat:@"errcode:%d",resp.errCode];
NSString *strTitle;
if ([resp isKindOfClass:[SendMessageToWXResp class]]) {
strTitle = [NSString stringWithFormat:@"发送媒体消息结果"];
}
if ([resp isKindOfClass:[PayResp class]]) {
// 支付返回结果，实际支付结果需要去微信服务器端查询
strTitle = [NSString stringWithFormat:@"支付结果"];
switch (resp.errCode) {
case WXSuccess:
strMsg = @"支付结果：成功！";
break;
default:
strMsg = [NSString stringWithFormat:@"支付结果：失败！retcode = %d,retstr = %@",resp.errCode,resp.errStr];
break;
}
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alert show];
}
}
第七步：发起支付
// 判断是否安装微信客户端
if ([WXApi isWXAppInstalled] == NO) {
[self showErrorToast:@"尚未安装微信客户端"];
return;
}
NSString *urlString = @"http://wxpay.weixin.qq.com/pub_v2/app/app_pay.php?plat=ios";
//解析服务端返回json数据
NSError *error;
//加载一个NSURL对象
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:urlString]];
//将请求的url数据放到NSData对象中
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
if ( response != nil) {
NSMutableDictionary *dict = NULL;
//IOS5自带解析类NSJSONSerialization从response中解析出数据放到字典中
dict = [NSJSONSerialization JSONObjectWithData:response options:NSJSONReadingMutableLeaves error:&error];
NSLog(@"url:%@",urlString);
if(dict != nil){
NSMutableString *retcode = [dict objectForKey:@"retcode"];
if (retcode.intValue == 0){
NSMutableString *stamp = [dict objectForKey:@"timestamp"];
//调起微信支付
PayReq* req = [[PayReq alloc] init];
req.partnerId = [dict objectForKey:@"partnerid"];
req.prepayId = [dict objectForKey:@"prepayid"];
req.nonceStr = [dict objectForKey:@"noncestr"];
req.timeStamp = stamp.intValue;
req.package = [dict objectForKey:@"package"];
req.sign = [dict objectForKey:@"sign"];
[WXApi sendReq:req];
//日志输出
NSLog(@"appid=%@\npartid=%@\nprepayid=%@\nnoncestr=%@\ntimestamp=%ld\npackage=%@\nsign=%@",[dict objectForKey:@"appid"],req.partnerId,req.prepayId,req.nonceStr,(long)req.timeStamp,req.package,req.sign );
}else{
NSLog(@"retmsg:%@",[dict objectForKey:@"retmsg"]);
}
}else{
NSLog(@"服务器返回错误，未获取到json对象");
}
}else{
NSLog(@"服务器返回错误");
}
第八步：展示支付结果
请求后台接口，返回支付结果并展示。
注意：一定要从我们的后台查询支付结果，不能直接展示微信客户端返回的结果！
