使用 swift4 在 xcode 中为单个项目使用不同的 GoogleService-Info.plist

Question

我有一个项目，但有 4 个不同的环境（开发、分期、QA、生产）。我已经从移动设备的设置中给出了他们的（环境的 web 服务 url）路径。现在我想为所有这些不同的环境使用不同的 GoogleService-info.plist。就像我从后端选择 Dev 时，项目应该只使用 Dev 项目的 GoogleService-Info.plist。这些 GoogleService-Info.plist 是在 4 个不同的帐户上创建的。项目应该以编程方式采用 GoogleService-info.plist 的路径。我试过下面的代码

1] 通过参考this url，我创建了两个文件夹 Dev 和 QA（目前）并尝试通过编程方式给出它们的路径

#if DEV
    print("[FIREBASE] Development mode.")
    filePath = Bundle.main.path(forResource: "GoogleService-Info", 
ofType: "plist", inDirectory: "Dev")
    #elseif QA
    print("[FIREBASE] QA mode.")
    filePath = Bundle.main.path(forResource: "GoogleService-Info", 
ofType: "plist", inDirectory: "QA")
    #endif
    let options = FirebaseOptions.init(contentsOfFile: filePath)!
    FirebaseApp.configure(options: options)

但是会报错

Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value

在

 let options = FirebaseOptions.init(contentsOfFile: filePath)!

这一行

2] 其次，我通过 GoogleService-Info-QA.plist 更改了 GoogleService-Info.plist 的名称，并尝试以编程方式访问此文件

private func configureFirebase() {
    guard   let plistPath = Bundle.main.path(forResource: 
"GoogleService-Info-QA", ofType: "plist"),
        let options =  FirebaseOptions(contentsOfFile: plistPath)
        else { return }
    FirebaseApp.configure(options: options)
}

但是会报错

Terminating app due to uncaught exception 'FIRAppNotConfigured', 
reason: 'Failed to get default Firebase Database instance. Must 
call `[FIRApp configure]` (`FirebaseApp.configure()` in Swift) 
before using Firebase Database.

Answer 1

将此代码 sn-p 放在应用程序的 didFinishLaunchingWithOptions 委托函数中的 AppDelegate.swift 中，位于 return true 之前的某个位置

//Configure Firebase based on the app's environment
#if DEV
   guard let filePath = Bundle.main.path(forResource: "GoogleService-Info-DEV", ofType: "plist") else { return }
   let options = FIROptions(contentsOfFile: filePath)
   FIRApp.configure(with: options!)
#elseif QA
   guard let filePath = Bundle.main.path(forResource: "GoogleService-Info-QA", ofType: "plist")  else { return }
   let options = FIROptions(contentsOfFile: filePath)
   FIRApp.configure(with: options!)
#endif

您需要确保您的 plist 文件已相应命名，并确保它们是您的目标的一部分：

• 选择 GoogleService-Info-DEV 文件，并在右侧的 FileInspector 中确保选中您应用目标的复选框。对 GoogleService-Info-QA 文件执行相同操作。

您的文件应放置在主文件夹中，就像放置普通的 Google-Info.plist 文件一样。

Answer 2

对于此确认，您必须执行以下步骤：

1. 转到项目设置
2. 选择你的开发目标
3. 转到构建阶段
4. 单击图标并创建名为 GOOGLESERVICE_INFO_PLIST 的新运行脚本
5. 使用以下脚本

//Name of the resource we're selectively copying
GOOGLESERVICE_INFO_PLIST=GoogleService-Info.plist

//Get references to dev and prod versions of the GoogleService-Info.plist
//NOTE: These should only live on the file system and should NOT be part of the target (since we'll be adding them to the target manually)
GOOGLESERVICE_INFO_DEV=${PROJECT_DIR}/projectFolder/Firebase/Dev/${GOOGLESERVICE_INFO_PLIST}
GOOGLESERVICE_INFO_PROD=${PROJECT_DIR}/projectFolder/Firebase/Prod/${GOOGLESERVICE_INFO_PLIST}

//Make sure the dev version of GoogleService-Info.plist exists
echo "Looking for ${GOOGLESERVICE_INFO_PLIST} in ${GOOGLESERVICE_INFO_DEV}"

if [ ! -f $GOOGLESERVICE_INFO_DEV ]
then
echo "No Development GoogleService-Info.plist found. Please ensure it's in the proper directory."
exit 1
fi

//Make sure the prod version of GoogleService-Info.plist exists
echo "Looking for ${GOOGLESERVICE_INFO_PLIST} in ${GOOGLESERVICE_INFO_PROD}"
if [ ! -f $GOOGLESERVICE_INFO_PROD ]
then
echo "No Production GoogleService-Info.plist found. Please ensure it's in the proper directory."
exit 1
fi

//Get a reference to the destination location for the GoogleService-Info.plist
PLIST_DESTINATION=${BUILT_PRODUCTS_DIR}/${PRODUCT_NAME}.app
echo "Will copy ${GOOGLESERVICE_INFO_PLIST} to final destination: ${PLIST_DESTINATION}"

//Copy over the prod GoogleService-Info.plist for Release builds
if [ "${CONFIGURATION}" == "Release" ]
then
echo "Using ${GOOGLESERVICE_INFO_PROD}"
cp "${GOOGLESERVICE_INFO_PROD}" "${PLIST_DESTINATION}"
else
echo "Using ${GOOGLESERVICE_INFO_DEV}"
cp "${GOOGLESERVICE_INFO_DEV}" "${PLIST_DESTINATION}"
fi

• 最后一步：确保您已将 GoogleService-Info.plist 放置在项目中正确的位置路径，您可以找到附图以供参考。

GOOGLESERVICE_INFO_DEV=${PROJECT_DIR}/projectFolder/Firebase/Dev/${GOOGLESERVICE_INFO_PLIST} GOOGLESERVICE_INFO_PROD=${PROJECT_DIR}/projectFolder/Firebase/Prod/${GOOGLESERVICE_INFO_PLIST}

projectFolder 是您当前的项目文件夹

Answer 3

我得到了解决方案。我通过其各自的环境重命名了 GoogleService-Info.plist 文件。并在 Build Phases -> Copy Bundle Resources 中添加了这些文件。然后根据选择的环境添加以下代码

 guard let plistPath = Bundle.main.path(forResource: "nameOfTheGoogleService-Info.plistFileAsPerTheEnvironment", ofType: "plist"),
                let options =  FirebaseOptions(contentsOfFile: plistPath)
                else { return }
            if FirebaseApp.app() == nil{
            FirebaseApp.configure(options: options)
            }

较小的变化是，当用户更改应用程序的环境时，他应该从后台删除应用程序并再次打开它。然后 AppDeleagte 根据其选择的环境采用相应 GoogleService-Info.plist 的路径