Can we write android related business logic

[raaviswami]

For example getting list of installed applications using packageManager ,

val applications = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
          context.packageManager.getInstalledApplications(
              PackageManager.ApplicationInfoFlags.of(
                  PackageManager.GET_META_DATA.toLong()
              )
          )
      } else {
          @Suppress("DEPRECATION") context.packageManager.getInstalledApplications(PackageManager.GET_META_DATA)
      }

[JakeWharton]

No. You would have to put that code inside a service and bind it from the host to be made available to the guest code inside the VM.

[raaviswami]

Wondering if you have any such example that uses Android SDK or Android components
Use cases can be

1. Get the list of installed applications on device
2. Get the location lat/long

[raaviswami]

are you saying we have keep android related business logic inside RealWorldClockHost(as per your clock example ) ? and access it from jsMain(Js.kt) ?

[JakeWharton]

That's right. You have to explicitly expose any APIs from the host platform into the guest (JS) code.

For example, in another repo where we use Zipline we define this interface: https://github.com/cashapp/redwood/blob/a3924943493049370b08b655bebdeb489e17db9f/samples/emoji-search/presenter-treehouse/src/commonMain/kotlin/com/example/redwood/emojisearch/treehouse/HostApi.kt

Which is then implemented on Android: https://github.com/cashapp/redwood/blob/a3924943493049370b08b655bebdeb489e17db9f/samples/emoji-search/android-views/src/main/kotlin/com/example/redwood/emojisearch/android/views/RealHostApi.kt

And iOS: https://github.com/cashapp/redwood/blob/a3924943493049370b08b655bebdeb489e17db9f/samples/emoji-search/ios-uikit/EmojiSearchApp/IosHostApi.swift