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#multiplatform
Title
# multiplatform
u
Umar Ata
10/21/2020, 6:22 PMHi there,
My name is Umar, I am from India
Nice meeting you to all worlds best developers
I have a question
I actually transformed one of my android application logic code to kotlin multiplatform
Problem: When the iOS developer needs the logic code I need to execute the command
*cd* "$SRCROOT/.."./gradlew :shared:packForSimulator -PXCODE_CONFIGURATION=${CONFIGURATION}k
Kris Wong
10/21/2020, 6:38 PMyou need to create a fat framework task https://medium.com/vmware-end-user-computing/building-an-ios-fat-framework-for-a-kotlin-multiplatform-project-4f2e0b5de2aa
u
Umar Ata
10/21/2020, 6:44 PMThank you, I want to know that if I use Fat framework so can I use same in Android?
k
Kris Wong
10/21/2020, 6:44 PMi don't understand the question. Android doesn't use frameworks.
u
Umar Ata
10/21/2020, 6:47 PMI have one android app, I want the same logic in both iOS and Android, so I copied my logic code in newly created shared multiplatform module and in Android I am using it as a project dependency like
Copy code
implementation project(':shared')and then use it in there
I don’t want to code separate framework for iOS, I only want to make framework that runs for both iOS device and simulator
for now I created two functions in gradle each for iOS device and simulator
Copy code
val packForXCode by tasks.creating(Sync::class) {
group = "build"
val mode = System.getenv("CONFIGURATION") ?: "DEBUG"
//val sdkName = System.getenv("SDK_NAME") ?: "iphonesimulator"
val targetName = "iosArm64"//+ if (sdkName.startsWith("iphoneos")) "Arm64" else "X64"
val framework = kotlin.targets.getByName<KotlinNativeTarget>(targetName).binaries.getFramework(mode)
inputs.property("mode", mode)
dependsOn(framework.linkTask)
val targetDir = File(buildDir, "xcode-frameworks")
from({ framework.outputDirectory })
into(targetDir)
}
val packForSimulator by tasks.creating(Sync::class) {
group = "build"
val mode = System.getenv("CONFIGURATION") ?: "DEBUG"
val sdkName = /*System.getenv("SDK_NAME") ?: */"iphonesimulator"
val targetName = "ios" +/*+ if (sdkName.startsWith("iphoneos")) "Arm64" else*/ "X64"
val framework = kotlin.targets.getByName<KotlinNativeTarget>(targetName).binaries.getFramework(mode)
inputs.property("mode", mode)
dependsOn(framework.linkTask)
val targetDir = File(buildDir, "xcode-frameworks")
from({ framework.outputDirectory })
into(targetDir)
}so when I want to generate framework for iPhone device I use
./gradlew shared:packFor XCode
and for simulator I use
./gradlew shared:packForSimulator
in this way I don’t need to select iPhone or Simulator in XCode
g
georg
10/21/2020, 7:03 PMYou could also create an XCFramework. It contains both the framework for the device and the simulator. I created a Gradle plugin that can do that for you. Check it out on Github: https://github.com/ge-org/multiplatform-swiftpackage
k
Kris Wong
10/21/2020, 7:21 PMa normal framework file contains the same. there's no need for a plugin
g
georg
10/21/2020, 7:25 PMWith a fat framework you need to remove the unused architectures (i.e. simulator) before uploading to the App Store. Otherwise Apple will reject the binary. An xcframework does not require this step
k
Kris Wong
10/21/2020, 7:25 PMgotcha
or just use the coacoapods plugin and don't worry about it
g
georg
10/21/2020, 7:29 PMTrue. It takes care of removing the simulator frameworks. But then you’re stuck with Cocoapods 😉
There are plenty of options out there. Just pick whatever suits your needs
u
Umar Ata
10/21/2020, 7:32 PMSo if I setup cocoa pods for my framework then I don’t need to generate framework?
but then it will become publicly available ?
g
georg
10/21/2020, 7:37 PMIt wont’t be public unless you publish it. There’s a nice article by Jetbrains about the integration of Cocoapods and KMP. https://kotlinlang.org/docs/reference/native/cocoapods.html
u
Umar Ata
10/21/2020, 7:38 PMokay
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