SwiftUI，从场景更改视图：continue

编程问答 2022-11-14

问题描述

在SwiftUI应用中，我面临着新的挑战，希望有人能给我一些提示或指导。到目前为止，我所看到的在应用程序各部分之间进行通信的机制似乎不太适合。但这可能是由于我在SwiftUI方面的经验仍然有限。

首先是相关代码：

class SceneDelegate {
  ... lot of code irrelevant to the question ...
  func scene(_ scene: UIScene,continue userActivity: NSUserActivity) {
      ... useful things happening for the app ...
      // Now the view should change ... by some mechanism.
      // This is the point of the question.
  }
}

和：

struct ContentView: View {
    ... lot of code irrelevant to the question ...
    var body: some View {
        vstack {
          ... code to draw the view ...
        }
        ... more code to draw the view ...
    }
}

第二，我的问题是：在 scene（：continue？

我想到了一些想法，以便在 scene（：continue ）函数中执行可能会影响视图绘制的事情。

不幸的是，当尝试实现时，我意识到绘制视图的代码是在 scene（：continue 函数之前执行的。因此，我需要其他机制（通知之类的，绑定之类的？ ）重新绘制视图。

是否有好的做法或标准方法？

解决方法

在这种情况下使用[ { "id": 4379711799354,"variant_id": 31291380727866,"title": "*NEW* Kayslin Sneaker in Blush","quantity": 1,"sku": "79000212","variant_title": "3Y","vendor": "TESTVENDOR","fulfillment_service": "manual","product_id": 4371426607162,"requires_shipping": true,"taxable": true,"gift_card": false,"name": "*NEW* Kayslin Sneaker in Blush - 3Y","variant_inventory_management": "shopify","properties": [ { "name": "Item Ships Separately","value": "✓" } ],"product_exists": true,"fulfillable_quantity": 0,"grams": 490,"price": "68.00","total_discount": "0.00","fulfillment_status": "fulfilled","pre_tax_price": "68.00","price_set": { "shop_money": { "amount": "68.00","currency_code": "USD" },"presentment_money": { "amount": "68.00","currency_code": "USD" } },"pre_tax_price_set": { "shop_money": { "amount": "68.00","total_discount_set": { "shop_money": { "amount": "0.00","presentment_money": { "amount": "0.00","discount_allocations": [],"admin_graphql_api_id": "gid:\/\/shopify\/LineItem\/4379711799354","tax_lines": [ { "title": "CT STATE TAX","price": "0.00","rate": 0.0,"price_set": { "shop_money": { "amount": "0.00","currency_code": "USD" },"presentment_money": { "amount": "0.00","currency_code": "USD" } } } ],"origin_location": { "id": 624876322874,"country_code": "US","province_code": "TX","name": "Joyfolie","address1": "1809 W Frankford Rd #160 ","address2": "","city": "Carrollton","zip": "75007" } },{ "id": 4379711832122,"variant_id": 31031946838074,"title": "*NEW* Mama Bird Necklace Set in Gold","sku": "83000109","variant_title": "","product_id": 4320751878202,"name": "*NEW* Mama Bird Necklace Set in Gold","properties": [],"grams": 113,"price": "29.50","pre_tax_price": "29.50","price_set": { "shop_money": { "amount": "29.50","presentment_money": { "amount": "29.50","pre_tax_price_set": { "shop_money": { "amount": "29.50","admin_graphql_api_id": "gid:\/\/shopify\/LineItem\/4379711832122","presentment_money": { "amount": 是合适的

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