skiptools/skip
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license: 暂无
Language: Swift .
Skip transpiler for converting SwiftUI iOS apps into Android Kotlin Compose apps
最后发布版本: 0.7.25 ( 2023-11-14 13:23:25)
Skip
Skip is a technology for creating dual-platform mobile apps in Swift. Read this introduction to learn more about Skip.
This repository hosts the Skip development toolchain, a.k.a. SkipStone. It also hosts the Skip forums for general discussions as well as specific issues and bug reports.
Getting Started
System Requirements
Skip requires a macOS 13 development machine with Xcode 15, Android Studio 2023, and Homebrew installed.
Installation
Install Skip by running the Terminal command:
brew install skiptools/skip/skip
This will download and install the skip
tool itself, as well as the gradle
and JDK dependencies that are necessary for building and testing the Kotlin/Android side of your apps. Note: If you don't already have a compatible JDK+ installed on your machine, you may need to enter an administrator password to complete the installation.
Ensure that the development prerequisites are satisfied by running:
skip checkup
If the checkup passes, you're ready to start developing with Skip!
Creating an App {#app_development}
Create a new app project with the command:
skip init --open-xcode --appid=bundle.id project-name AppName
For example:
skip init --open-xcode --appid=com.xyz.HelloSkip hello-skip HelloSkip
This will create a hello-skip/
folder with a new SwiftPM package containing a single module named HelloSkip
, along with folders named Darwin
and Android
and the shared Skip.env
app configuration file. The Darwin
folder will contain a HelloSkip.xcodeproj
project with a HelloSkip
target, which can be opened in Xcode.
Xcode will open the new project, but before you can build and launch the transpiled app, an Android emulator needs to be running. Launch Android Studio.app
and open the Virtual Device Manager
from the ellipsis menu of the Welcome dialog. From there, Create Device
(e.g., "Pixel 6") and then Launch
the emulator.
Once the Android emulator is running, select and run the HelloSkip
target in Xcode. The first build will take some time to compile the Skip libraries, and you may be prompted with a dialog to affirm that you trust the Skip plugin. Once the build and run action completes, the SwiftUI app will open in the selected iOS simulator, and at the same time the transpiled app will launch in the currently-running Android emulator.
Browse to the ContentView.swift
file and make a small change and re-run the target: the app will be re-built and re-run on both platforms simultaneously with your changes.
See the product documentation for further information developing with Skip. Happy Skipping!
Creating a Multi-Module App
Skip is designed to accommodate and encourage using multi-module projects. The default skip init
command creates a single-module app for simplicity, but you can create a modularized project by specifying additional module names at the end of the chain. For example:
skip init --open-xcode --appid=com.xyz.HelloSkip multi-project HelloSkip HelloModel HelloCore
This command will create a SwiftPM project with three modules: HelloSkip
, HelloModel
, and HelloCore
. The heuristics of such module creation is that the modules will all be dependent on their subsequent peer module, with the first module (HelloSkip
) having an initial dependency on SkipUI
, the second module depending on SkipModel
, and the final module in the chain depending on SkipFoundation
. The Package.swift
file can be manually edited to shuffle around dependencies, or to add new dependencies on external Skip frameworks such as the nascent SkipSQL or SkipXML libraries.
Creating a Dual-Platform Framework {#framework_development}
Skip framework projects are pure SwiftPM packages that encapsulate common functionality. They are simpler than app projects, as they do not need Darwin/
and Android/
folders.
Each of the core Skip compatibility frameworks (skip-lib, skip-unit, skip-foundation, and skip-ui) are Skip framework projects. Other commonly-used projects include skip-sql, skip-script, and skip-zip.
A new framework project can be created and opened with:
skip init --build --test lib-name ModuleName
This will create a new lib-name
folder containing a Package.swift
with targets of ModuleName
and ModuleNameTests
.
This project can be opened in Xcode.app, which you can use to build and run the unit tests. Running swift build
and swift test
from the Terminal can also be used for headless testing as part of a continuous integration process.
Skip Project structure
lib-name
├── Package.resolved
├── Package.swift
├── README.md
├── Sources
│ └── ModuleName
│ ├── ModuleName.swift
│ ├── Resources
│ │ └── Localizable.xcstrings
│ └── Skip
│ └── skip.yml
└── Tests
└── ModuleNameTests
├── ModuleNameTests.swift
├── Resources
│ └── TestData.json
├── Skip
│ └── skip.yml
└── XCSkipTests.swift
Skip Package.swift structure
// swift-tools-version: 5.8
import PackageDescription
let package = Package(
name: "lib-name",
defaultLocalization: "en",
platforms: [.iOS(.v16), .macOS(.v13), .tvOS(.v16), .watchOS(.v9), .macCatalyst(.v16)],
products: [
.library(name: "ModuleName", targets: ["ModuleName"]),
],
dependencies: [
.package(url: "https://source.skip.tools/skip.git", from: "0.7.25"),
.package(url: "https://source.skip.tools/skip-foundation.git", from: "0.0.0"),
],
targets: [
.target(name: "ModuleName", plugins: [.plugin(name: "skipstone", package: "skip")]),
.testTarget(name: "ModuleNameTests", dependencies: ["ModuleName"], plugins: [.plugin(name: "skipstone", package: "skip")]),
]
)
skip init options
zap /tmp % skip init --help
OVERVIEW: Initialize a new Skip project
USAGE: skip init [<options>] <project-name> <module-names> ...
ARGUMENTS:
<project-name> Project folder name
<module-names> The module name(s) to create
OUTPUT OPTIONS:
-o, --output <path> Send output to the given file (stdout: -)
-E, --message-errout Emit messages to the output rather than stderr
-v, --verbose Whether to display verbose messages
-q, --quiet Quiet mode: suppress output
-J, --json Emit output as formatted JSON
-j, --json-compact Emit output as compact JSON
-M, --message-plain Show console messages as plain text rather than JSON
-A, --json-array Wrap and delimit JSON output as an array
--plain/--no-plain Show no colors or progress animations (default: --no-plain)
CREATE OPTIONS:
--id <id> Application identifier (default: net.example.MyApp)
-d, --dir <directory> Base folder for project creation
-c, --configuration <c> Configuration debug/release (default: debug)
-t, --template <id> Template name/ID for new project (default: skipapp)
-h, --template-host <host>
The host name for the template repository (default: https://github.com)
-f, --template-file <zip>
A path to the template zip file to use
--resource-path <resource-path>
Resource folder name (default: Resources)
--chain/--no-chain Create library dependencies between modules (default: --chain)
--zero/--no-zero Add SKIP_ZERO environment check to Package.swift (default: --zero)
--git-repo/--no-git-repo
Create a local git repository for the app (default: --no-git-repo)
--free Create package in free mode
--show-tree/--no-show-tree
Display a file system tree summary of the new files (default: --no-show-tree)
--module-tests/--no-module-tests
Whether to create test modules (default: --module-tests)
--validate-package/--no-validate-package
Validate generated Package.swift files (default: --validate-package)
TOOL OPTIONS:
--xcodebuild <path> Xcode command path
--swift <path> Swift command path
--gradle <path> Gradle command path
--adb <path> ADB command path
--emulator <path> Android emulator path
--android-home <path> Path to the Android SDK (ANDROID_HOME)
BUILD OPTIONS:
--build/--no-build Run the project build (default: --build)
--test/--no-test Run the project tests (default: --no-test)
--verify/--no-verify Verify the project output (default: --verify)
OPTIONS:
--appid <appid> Embed the library as an app with the given bundle id
--icon-color <icon-color>
RGB hexadecimal color for icon background (default: 4994EC)
--version <version> Set the initial version to the given value
--apk/--no-apk Build the Android .apk file (default: --no-apk)
--ipa/--no-ipa Build the iOS .ipa file (default: --no-ipa)
--open-xcode Open the resulting Xcode project
--open-gradle Open the resulting Gradle project
-h, --help Show help information.
Troubleshooting
Skip's architecture relies on recent advances in the plugin system used by Xcode 15 and Swift Package Manager 5.9. When unexpected issues arise, often the best first step is to clean your Xcode build (Product
→ Clean Build Folder
) and reset packages (File
→ Packages
→ Reset Package Caches
). Restarting Xcode is sometimes warranted, and trashing the local DerivedData/
folder might even be needed.
Specific known error conditions are listed below. Search the documentation, issues, and discussions for more information and to report problems.
-
Xcode sometimes reports error messages like the following:
Internal inconsistency error (didStartTask): targetID (174) not found in _activeTargets. Internal inconsistency error (didEndTask): '12' missing from _activeTasks.
When these errors occur, the build appears to complete successfully although changes are not applied. Unfortunately, this is an Xcode bug. We have found the following workarounds:
- Continue to retry the build. Eventually Xcode may complete successfully, although the errors often continue to become more frequent until you are forced to apply one of the other solutions below.
- Restart Xcode.
- Clean and rebuild.
You can read more about this Xcode error on the Swift.org forums.
-
Skip may highlight the wrong line in build errors. When Skip surfaces the wrong line number, it is typically only one line off.
最近版本更新:(数据更新于 1970-01-01 00:00:00)
2023-11-14 13:23:25 0.7.25
2023-11-14 10:34:13 0.7.24
2023-11-14 03:45:07 0.7.23
2023-11-12 23:18:48 0.7.22
2023-11-07 22:24:30 0.7.21
2023-11-07 12:19:07 0.7.20
2023-11-04 09:24:00 0.7.19
2023-11-04 08:51:00 0.7.18
2023-11-04 07:36:02 0.7.17
2023-10-31 09:08:17 0.7.16
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