Apollo Docs
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Installation


Apollo iOS requires the latest Xcode, which can be installed from the Mac App Store.

Follow along with these steps (described in detail below) to use Apollo iOS in your app:

  1. Install the Apollo framework into your project and link it to your application target
  2. Add a schema file to your target directory
  3. Add a code generation build step to your target
  4. Build your target
  5. Add the generated API file to your target
  6. Install the Xcode add-ons to get syntax highlighting for your .graphql files (optional)
  7. Create .graphql files with your queries or mutations and add them to your target

Installing the Apollo framework

You can install Apollo.framework into your project using Carthage, CocoaPods, or by manually integrating it with Xcode.

Carthage

  1. Add github "apollostack/apollo-ios" to your Cartfile.

  2. Run carthage update.

  3. Drag and drop Apollo.framework from the Carthage/Build/iOS folder to the "Linked Frameworks and Libraries" section of your application targets' "General" settings tab.

  4. On your application targets’ "Build Phases" settings tab, click the "+" icon and choose "New Run Script Phase". Create a Run Script in which you specify your shell (ex: bin/sh), add the following contents to the script area below the shell:

/usr/local/bin/carthage copy-frameworks

and add the paths to the frameworks you want to use under "Input Files", e.g.:

$(SRCROOT)/Carthage/Build/iOS/Apollo.framework

This script works around an App Store submission bug triggered by universal binaries and ensures that necessary bitcode-related files and dSYMs are copied when archiving.

CocoaPods

  1. Because Apollo iOS has been written using Swift 5, you need to use version 1.5.0 or higher. You can install CocoaPods using:
gem install cocoapods
  1. Add pod "Apollo" to your Podfile.

  2. Run pod install.

  3. Use the .xcworkspace file generated by CocoaPods to work on your project.

Manual integration

You can also manually clone the apollo-ios repository, drag Apollo.xcodeproj into your project or workspace, add a dependency on Apollo.framework to your target.

Adding a schema file to your target directory

You'll have to copy or download a schema to your target directory before generating code.

Apollo iOS requires a GraphQL schema file as input to the code generation process. A schema file is a JSON file that contains the results of an an introspection query. Conventionally this file is called schema.json.

Adding a code generation build step

In order to invoke apollo as part of the Xcode build process, create a build step that runs before "Compile Sources" to invoke apollo through the check-and-run-apollo-cli.sh wrapper script.

The main reason for calling the wrapper is to check whether the version of apollo installed on your system is compatible with the framework version installed in your project, and to warn you if it isn't. Without this check, you could end up generating code that is incompatible with the runtime code contained in the framework.

The location of this wrapper script is slightly different based on how you've integrated Apollo into you project, but the first steps are the same everywhere:

  1. On your application target's Build Phases settings tab, click the + icon and choose New Run Script Phase.
  2. In the created Run Script, change its name to Generate Apollo GraphQL API
  3. Drag this new run script just above Compile Sources in your list of Build Phases so that it executes before your code is compiled.
  4. Add the appropriate contents to the run script from the options below.

If you ARE integrating Apollo using CocoaPods

Our CocoaPods install includes the code-generation script as a file which will not be added to the framework. Since this is always installed in a consistent place, you can use the same path to it. Add the following to the Run Script:

SCRIPT_PATH="${PODS_ROOT}/Apollo/scripts"
cd "${SRCROOT}/${TARGET_NAME}"
"${SCRIPT_PATH}"/check-and-run-apollo-cli.sh codegen:generate --queries="$(find . -name '*.graphql')" --schema=schema.json API.swift

If you're NOT integrating Apollo using CocoaPods

In this case, the check-and-run-apollo-cli.sh file is bundled into the framework. The procedures to call it are slightly different based on whether you're using an iOS or macOS target because of the way the frameworks are compiled.

📱 For an iOS target or a Cocoa Touch Framework, use the following:

# Do some magic so we can make sure `FRAMEWORK_SEARCH_PATHS` works correctly when there's a space in the scheme or the folder name.
QUOTED_FRAMEWORK_SEARCH_PATHS=\"$(echo $FRAMEWORK_SEARCH_PATHS | tr -d '"' | sed -e 's/ \//" "\//g')\"

# Get the first result searching for the framework
APOLLO_FRAMEWORK_PATH="$(eval find ${QUOTED_FRAMEWORK_SEARCH_PATHS} -name "Apollo.framework" -maxdepth 1 -print | head -n 1)"

if [ -z "${APOLLO_FRAMEWORK_PATH}" ]; then
    echo "error: Couldn't find Apollo.framework in FRAMEWORK_SEARCH_PATHS; make sure to add the framework to your project."
    exit 1
fi

cd "${SRCROOT}/${TARGET_NAME}"
"${APOLLO_FRAMEWORK_PATH}"/check-and-run-apollo-cli.sh codegen:generate --queries="$(find . -name '*.graphql')" --schema=schema.json API.swift

💻 For a macOS or a Cocoa Framework target, use the following:

# Do some magic so we can make sure `FRAMEWORK_SEARCH_PATHS` works correctly when there's a space in the scheme or the folder name.
QUOTED_FRAMEWORK_SEARCH_PATHS=\"$(echo $FRAMEWORK_SEARCH_PATHS | tr -d '"' | sed -e 's/ \//" "\//g')\"

# Get the first result searching for the framework
APOLLO_FRAMEWORK_PATH="$(eval find ${QUOTED_FRAMEWORK_SEARCH_PATHS} -name "Apollo.framework" -maxdepth 1 -print | head -n 1)"

if [ -z "${APOLLO_FRAMEWORK_PATH}" ]; then
    echo "error: Couldn't find Apollo.framework in FRAMEWORK_SEARCH_PATHS; make sure to add the framework to your project."
    exit 1
fi

cd "${SRCROOT}/${TARGET_NAME}"
"${APOLLO_FRAMEWORK_PATH}"/Versions/Current/Resources/check-and-run-apollo-cli.sh codegen:generate --queries="$(find . -name '*.graphql')" --schema=schema.json API.swift

Build your target

At this point, you can try building your target in Xcode. This will verify that the schema.json file can be found by the apollo script created above, otherwise you'll get a build error such as:

Cannot find GraphQL schema file [...]

Adding the generated API file to your target

  1. Drag the generated API.swift file to your target.

Note that because Apollo iOS generates query-specific result types, API.swift will be mostly empty at this point unless you've already added some .graphql files with queries or mutations to your target directory.

Installing the Xcode add-ons to get syntax highlighting

  1. Clone the xcode-apollo repository to your computer.
  2. Close Xcode if it is currently running.
  3. You may need to create these folders inside of ~/Library/Developer/Xcode:

mkdir ~/Library/Developer/Xcode/Plug-ins ~/Library/Developer/Xcode/Specifications

  1. Copy GraphQL.ideplugin to ~/Library/Developer/Xcode/Plug-ins.

cp -R GraphQL.ideplugin ~/Library/Developer/Xcode/Plug-ins

  1. Copy GraphQL.xclangspec to ~/Library/Developer/Xcode/Specifications.

cp -R GraphQL.xclangspec ~/Library/Developer/Xcode/Specifications

You may receive a warning the first time you start up Xcode after installing these add-ons - once you agree to load the plugin, you will no longer see this warning.

Create .graphql files with your queries or mutations

Apollo iOS generates code from queries and mutations contained in .graphql files in your target.

A useful convention is to colocate queries, mutations or fragments with the Swift code that uses them by creating <name>.graphql next to <name>.swift.

If you have the Xcode add-ons installed, you can use the Xcode companion view to show a .swift file and the corresponding .graphql file side by side.