Hi folks I usually develop Android apps using Jetpack Compos

Question

Hi folks I usually develop Android apps using Jetpack Compose and am currently investigating whether it can be ported to Compose for iOS We sometimes use LocalContext in Jetpack Compose for Android but I think that Context depends on android content What should we do in Compose for iOS Should we not use Context

agrosner · Answer

I would ask why do you need it If you need resources I think compose mpp has solutions If you need to launch android specific things I might make abstractions for each platform around that usage rather than rely on context

agrosner · Answer

I can see why original compose has support for it but at same time it could propagate usage of that god object

Kensuke Sano · Answer

I looked into the code and found that it was used in PSharedreference I believe this is an Android dependent feature so should we consider implementing it differently

Kensuke Sano · Answer

And using in DatePicker ```MaterialDatePicker Builder datePicker setSelection date toEpochMilli Instant now toEpochMilli build apply show context supportFragmentManager DatePicker addOnPositiveButtonClickListener setDate Instant ofEpochMilli it ```

Dima Avdeev · Answer

Hello we have a solution for this right in our main sample called imageviewer ```on common expect class PlatformContext Composable expect fun getPlatformContext PlatformContext on Android actual class PlatformContext val androidContext Context Composable actual fun getPlatformContext PlatformContext = PlatformContext LocalContext current ``` <https github com JetBrains compose multiplatform blob 1d955a2e6da60f695aee1efb0f1e121177ae88b0 examples imageviewer shared src androidMain kotlin example imageviewer filter BitmapFilter android kt L30|https github com JetBrains compose multiplatform blob 1d955a2e6da60f695aee1efb0f dMain kotlin example imageviewer filter BitmapFilter android kt>

Dima Avdeev · Answer

After that you can also create ``` Composable expect fun PlatformDatePicker``` ``` Composable actual fun PlatfromDatePicker with android implementation ``` and some different one for iOS

Kensuke Sano · Answer

Thanks I d like to try it later I believe there are differences due to the OS but are there any efforts to bridge these gaps in Kotlin Multiplatform In other words I m talking about Jetpack Compose becoming independent of Android It would be nice if DatePicker could achieve this I understand that running SharedPreference in Jetpack Compose might be difficult since it s impossible to avoid the OS differences but it would be nice if Kotlin Multiplatform could provide a solution

Kensuke Sano · Answer

I found DatePicker in Compose Material3 v1 10 Beta <https developer android com jetpack androidx releases compose material3 hl=en 1 1 0 beta02|https developer android com jetpack androidx releases compose material3 hl=en 1 1 0 beta02>

michaelv · Answer

< Kensuke Sano> did you try it I also noticed that it s available now with the exception of the TimePickerDialog but there s some code for that on Stackoverflow However I couldn t find a way to select dates in UI tests Anyone know if it s possible or do they still need to add the semantics Talkback can read the dates just fine so I would have thought that at least something like this should work but it doesn t Nothing is visible in the layout inspector inside the DatePicker so I think it s not quite ready yet so close though also clearly it s in progress but the material design page just says planned ```composeTestRule onNode hasContentDescription value = Tuesday 12 October 2021 performClick ```