【Compose Multiplatform】Using CocoaPods in CMP Projects and Using iOS Swift/Obj-C Without CocoaPods

Introduction

When developing cross-platform apps for both platforms the current official solutions may not be completely comprehensive so for some features we need to bridge back to the original platform and use that platform's native code How can we implement this?

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Using CocoaPods

Add CocoaPods Configuration Settings

Add configuration to libs.version.toml

In build.gradle.kts

add the cocoapods block

and add the Pod library dependencies you want to use pod("Google-Mobile-Ads-SDK")

as well as the PodFile location podfile = project.file("../iosApp/Podfile")

usually under your iOS project

if you generate a project with the KMM official website

the default name is iosApp

The official website mentions that you can add the following types of Pod library dependencies

From CocoaPods repository
Locally stored libraries
Custom Git repository
Custom Podspec repository
With custom cinterop options

Configure Podfile under the iosApp project

After that

use pod install in the iosApp project to install the configuration

if it's already installed, you can use pod install --repo-update

or pod deintegrate and then reinstall

Finally, run ./gradlew build

if successful, you can import iOS bridged code through Kotlin

Using iOS Framework in Kotlin Without CocoaPods

If you don't want to use CocoaPods

you can use cinterop to create Kotlin bridges for Objective-C or Swift declarations

so you can call them from Kotlin

Step 1.

Create a .def file in ../composeApp/nativeInterop/cinterop/xxx.def

(write the content according to your actual needs)

Step 2.

Add the following code to the iOS configuration in Build.gradle.kts

the framework you want to use can also be found through paths after installing with cocoapods

or you can implement your own .swift bridge

Conclusion

However, based on current testing

iOS native code transferred directly through cocoapods configuration

cannot be completely transferred at the current stage

for example, when I use Google-Mobile-Ads-SDK, not all functions can be resolved

So we need to use .def to transfer it ourselves

but this is equivalent to still having to write iOS native code