微信支付SDK官方说明文档很坑，非常不详细，以下是本人的总结，希望新手不被官方坑。
Info
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引用
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桥接头文件 xxx-Bridging-Header.h
import "WXApi.h"
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Other Linker Flags
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AppDelegate
在 didFinishLaunchingWithOptions 中注册微信支付：
WXApi.registerApp("YourAPPID", withDescription: "YourDescription")
返回App后走这里，有两个方法是由于iOS版本不同而产生：
extension AppDelegate {
func application(_ application: UIApplication, handleOpen url: URL) -> Bool {
return WXApi.handleOpen(url, delegate: self)
}
func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey: Any] = [:]) -> Bool {
return WXApi.handleOpen(url, delegate: self)
}
}
微信支付回调：
extension AppDelegate: WXApiDelegate {
func onResp(_ resp: BaseResp!) {
if let response = resp as? PayResp {
switch response.errCode {
case WXSuccess.rawValue:
NotificationCenter.default.post(name: NSNotification.Name.WechatPayObserver, object: nil, userInfo: ["PayResult": PayResult.successful])
default:
NotificationCenter.default.post(name: NSNotification.Name.WechatPayObserver, object: nil, userInfo: ["PayResult": PayResult.failed])
}
}
}
}
