iOS开发笔记-31: 微信支付成功没有回调

//支付回调9以后
- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary*)options {
    return  [WXApi handleOpenURL:url delegate:self];
}
//支付回调9以前
- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
    return  [WXApi handleOpenURL:url delegate:self];
}

//ios9以后的方法
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    return [WXApi handleOpenURL:url delegate:self];
}