開始之前，準備一個測試數據。分享出去的其實是一個URL，我們這邊呢簡單寫個小demo就好。

- (IBAction)toEat:(UIButton *)sender {
    // 1.獲取應用程序App-B的URL Scheme
    /*
     biz 業務類型。1-購物
     et  頁面。   1-單品頁
     */
    NSURL *appBUrl = [NSURL URLWithString:[NSString stringWithFormat:@"ue://storeID=%zd&productID=1&biz=1&et=1",sender.tag]];
    // 2.判斷手機中是否安裝了對應程序
    if ([[UIApplication sharedApplication] canOpenURL:appBUrl]) {
        // 3. 打開應用程序App-B
        [[UIApplication sharedApplication] openURL:appBUrl];
    } else {
        NSLog(@"沒有安裝");
    }
}

涉及到跳轉，我們這邊需要給一個白名單LSApplicationQueriesSchemes

添加白名單.jpeg

到此為止，我們的準備數據工作就完成了。下面開始進入我們自己的App處理代碼.......

part 1 約定scheme

scheme.jpeg

這里的scheme跟測試數據里面的appBUrl的前綴、LSApplicationQueriesSchemes是一樣的～

part 2 代碼處理部分

當App運行在前臺時，點擊分享鏈接進來在此處拿到URL

-(BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options{
    
    NSString *string =[url absoluteString];
    if ([string hasPrefix:@"ue"])
    {
        self.tab.selectedIndex = 0;
        //點擊分享進來
        [self postShareNotiWithUrlStr:string];
    }
    return YES;
}

當App被殺死時，點擊分享鏈接進來在此處拿到URL

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
    self.window.backgroundColor = [UIColor whiteColor];
    self.tab = [JKTabBarController new];
    self.window.rootViewController = self.tab;
    [self.window makeKeyAndVisible];
    //程序殺死后獲取分享url
    NSURL *url = [launchOptions objectForKey:UIApplicationLaunchOptionsURLKey];
    NSString *string =[url absoluteString];
    if ([string hasPrefix:@"ue"])
    {
        [self postShareNotiWithUrlStr:string];
    }
    return YES;
}

拿到URL之后的處理

-(void)postShareNotiWithUrlStr:(NSString *)urlStr{
    NSRange range = [urlStr rangeOfString:@"://"];
    NSString *paramStr = [urlStr substringFromIndex:range.location + range.length];
    NSArray *arrA = [paramStr componentsSeparatedByString:@"&"];
    NSMutableDictionary *dic = [NSMutableDictionary dictionary];
    for (int i = 0; i < arrA.count; i++) {
        NSArray *arrB = [arrA[i] componentsSeparatedByString:@"="];
        [dic setValue:arrB.lastObject forKey:arrB.firstObject];
    }
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        //發送通知去首頁
        [[NSNotificationCenter defaultCenter] postNotificationName:@"toHome" object:nil userInfo:dic];
    });
}

首頁邏輯的處理

-(void)viewWillAppear:(BOOL)animated{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(toDetailVC:) name:@"toHome" object:nil];
}

-(void)toDetailVC:(NSNotification *)noti{
    [[NSNotificationCenter defaultCenter] removeObserver:self name:@"toHome" object:nil];
    JKCommodityDetailsController *commodityDetailsController = [[JKCommodityDetailsController alloc] init];
    NSDictionary *dic = noti.userInfo;
    if ([[dic valueForKey:@"biz"] isEqualToString:@"1"] && [[dic valueForKey:@"et"] isEqualToString:@"1"])
    {
        commodityDetailsController.storeID = [dic valueForKey:@"storeID"];
        commodityDetailsController.productId = [[dic valueForKey:@"productID"] integerValue];
        commodityDetailsController.SourceType = SourceTypeShare;
    }
    [self.navigationController pushViewController:commodityDetailsController animated:YES];
}

part 3 效果圖

效果圖.gif