IOS微信支付

导入类库

将下载好的 微信支付 SDK 拉到工程里面

里面的 read_me.txt 里面有对应的重要说明

在 info.plist 里面添加

<key>LSApplicationQueriesSchemes</key>
<array>
<string>weixin</string>
</array>
<key>NSAppTransportSecurity</key>
<dict>
<key>NSAllowsArbitraryLoads</key>
<true/>
</dict>

然后查看 info.plist

如果文件显示如下则成功添加：

接着到 URL Types 添加你的微信开发者帐号ID

AppDelegate.h

#import "AppDelegate.h"
#import "WXApi.h"
//必须遵守协议
@interface AppDelegate ()<WXApiDelegate>

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

/*
微信测试APPID wxb4ba3c02aa476ea1
1.导入微信支付 SDK,注册微信支付
2.设置微信的 APPID 为 URL Schemes
3.发起支付，调起微信支付
4.处理支付结果
*/
[WXApi registerApp:@"你的 ID" withDescription:@"wxdemo"];

return YES;
}

-(void)onResp:(BaseResp *)resp
{
if ([resp isKindOfClass:[PayResp class]])
{
//返回支付结果,实际支付结果需要取微信服务端查询
NSString *strMsg = @"支付结果";
switch (resp.errCode) {
case WXSuccess:
strMsg = @"支付成功";
NSLog(@"支付成功-PaySuccess,resp.errCode = %d",resp.errCode);
break;

default:
strMsg = @"支付失败";
NSLog(@"支付失败-PaySuccess,resp.errCode = %d,resp.errStr = %@",resp. errCode,resp.errStr);
break;
}

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:[NSString stringWithFormat:@"%d",resp.errCode ]message:resp.errStr preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *sure = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

}];
[alertController addAction:sure];
[self.window.rootViewController presentViewController:alertController animated:YES completion:^{

}];
}
}

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options
{

return [WXApi handleOpenURL:url delegate:self];
}

ViewController.m

#import "ViewController.h"
#import "WXApi.h"
@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
[super viewDidLoad];

}
- (IBAction)payBtnAction:(id)sender {
[ViewController jumpToBizPay];
}

+ (NSString *)jumpToBizPay {

if (![WXApi isWXAppInstalled]) {
NSLog(@"该设备没有安装微信");
return @"该设备没有安装微信";
}
if (![WXApi isWXAppSupportApi]) {
NSLog(@"该设置不支持微信支付");
return @"该设置不支持微信支付";
}

//============================================================
// V3&V4支付流程实现
// 注意:参数配置请查看服务器端Demo
// 更新时间：2015年11月20日
//============================================================
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 );
return @"";
}else{
return [dict objectForKey:@"retmsg"];
}
}else{
return @"服务器返回错误，未获取到json对象";
}
}else{
return @"服务器返回错误";
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end