老項(xiàng)目在iOS13以上的手機(jī)上跑，支付成功后發(fā)現(xiàn)沒有走回調(diào)（在iOS13以下的版本正常）。查資料發(fā)現(xiàn)是因?yàn)閕OS13的這些支付回調(diào)都在SceneDelegate中。SceneDelegate是Xcode11創(chuàng)建項(xiàng)目后自動生成的，負(fù)責(zé)AppDelegate的某些功能、iPadOS的多窗口功能，這里不作詳細(xì)介紹。

為了弄SceneDelegate中的支付回調(diào)，先做好準(zhǔn)備工作：
1.項(xiàng)目的info.list里加上新的key value（也可以新建一個(gè)項(xiàng)目，把新項(xiàng)目里的直接復(fù)制過來），如圖。

info.png

2.AppDelegate.m里的變化

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch

    if (@available(iOS 13.0, *)){
        NSLog(@"========iOS13========");
    }else {
        [self baseSetting]; //加載設(shè)置一些第三方庫 支付寶、微信、定位等等
        [self initBaseController]; //創(chuàng)建window、導(dǎo)航欄等
    }
    return YES;
}

#pragma mark - UISceneSession lifecycle

- (UISceneConfiguration *)application:(UIApplication *)application configurationForConnectingSceneSession:(UISceneSession *)connectingSceneSession options:(UISceneConnectionOptions *)options  API_AVAILABLE(ios(13.0)){
    // Called when a new scene session is being created.
    // Use this method to select a configuration to create the new scene with.
    if (@available(iOS 13.0, *)){
        return [[UISceneConfiguration alloc] initWithName:@"Default Configuration" sessionRole:connectingSceneSession.role];
    }else {
        return nil;
    }
}

- (void)application:(UIApplication *)application didDiscardSceneSessions:(NSSet<UISceneSession *> *)sceneSessions  API_AVAILABLE(ios(13.0)){
    // Called when the user discards a scene session.
    // If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
    // Use this method to release any resources that were specific to the discarded scenes, as they will not return.
}

3.SceneDelegate.h

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface SceneDelegate : UIResponder <UIWindowSceneDelegate>

@property (strong, nonatomic) UIWindow * window;

@end

NS_ASSUME_NONNULL_END

4.SceneDelegate.m .m里創(chuàng)建window的方式發(fā)生了變化，這里要注意一下

- (void)scene:(UIScene *)scene willConnectToSession:(UISceneSession *)session options:(UISceneConnectionOptions *)connectionOptions  API_AVAILABLE(ios(13.0)){
    // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
    // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
    // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
    
    if (@available(iOS 13.0, *)){
        [self baseSetting]; //加載設(shè)置一些第三方庫 支付寶、微信、定位等等
        [self initBaseControllerWithScene:(UIWindowScene *)scene andWithSession:session options:connectionOptions]; //創(chuàng)建window、導(dǎo)航欄等
    }
}

-(void)initBaseControllerWithScene:(UIWindowScene *)scene andWithSession:(UISceneSession *)session options:(UISceneConnectionOptions *)connectionOptions
API_AVAILABLE(ios(13.0)){
    
    self.window = [[UIWindow alloc] initWithWindowScene:scene];
    self.window.frame = scene.coordinateSpace.bounds;
    self.window.backgroundColor = WHITE_Color;
    [self.window makeKeyAndVisible];
    //創(chuàng)建導(dǎo)航欄什么的
    //......  self.window.rootViewController = ;
}

- (void)scene:(UIScene *)scene openURLContexts:(NSSet<UIOpenURLContext *> *)URLContexts
API_AVAILABLE(ios(13.0))
{
    NSEnumerator *enumerator = [URLContexts objectEnumerator];
    
    UIOpenURLContext *context;

    while (context = [enumerator nextObject]) {
        
        NSURL *url = context.URL;
        
        if([[NSString stringWithFormat:@"%@",url] rangeOfString:@"Wechat_Login"].location != NSNotFound)
        { //微信登錄
            //#define appDelegate ((AppDelegate *)[[UIApplication sharedApplication] delegate])
            vc //login登錄頁面
            [WXApi handleOpenURL:url delegate:vc];
        }else if(([url.host isEqualToString:@"pay"] || [url.host isEqualToString:@"resendContextReqByScheme"] || [url.host isEqualToString:@"platformId=wechat"]) && [url.scheme isEqualToString:@"你的微信appid：wx************"]){
            //"微信支付分授權(quán)和微信支付等回調(diào)====>我寫在WXPayService.m的delegate方法中了，可以自己封裝一下"
            [WXApi handleOpenURL:url delegate:[WXPayService sharedInstance]];
        }else if ([url.host isEqualToString:@"safepay"]) { //支付寶登錄和支付
            NSString *scope = [NSString getParamByName:@"scope" URLString:[NSString stringWithFormat:@"%@",url]];
            if ([scope isEqualToString:@"kuaijie"]) { //支付寶快捷登錄
                [[AlipaySDK defaultService] processAuth_V2Result:url standbyCallback:nil];
            }else {
                //跳轉(zhuǎn)支付寶錢包進(jìn)行支付，處理支付結(jié)果
                [[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:nil];
            }
        }
    }
}

NSString的Category

#pragma mark - ==========獲取url中的參數(shù)==========
+ (NSString *)getParamByName:(NSString *)name URLString:(NSString *)url
{
    NSError *error;
    NSString *regTags=[[NSString alloc] initWithFormat:@"(^|&|\\?)+%@=+([^&]*)(&|$)", name];
    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:regTags
                                                                           options:NSRegularExpressionCaseInsensitive
                                                                             error:&error];
    
    // 執(zhí)行匹配的過程
    NSArray *matches = [regex matchesInString:url
                                      options:0
                                        range:NSMakeRange(0, [url length])];
    for (NSTextCheckingResult *match in matches) {
        NSString *tagValue = [url substringWithRange:[match rangeAtIndex:2]];  // 分組2所對應(yīng)的串
        return tagValue;
    }
    return @"";
}

這下就能收到支付成功/失敗的回調(diào)了，有問題或者我寫的哪里有問題歡迎留言指正。