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kotlinlang

Did anyone successfully use Proguard? I'm hitting this issue: <https://github.com/Guardsquare/proguard/issues/349> but turning off that optimization I get an ever more arcane issue. Am I doing something wrong?

I had similar issue, only fix for me was to add some exclusions to proguard config as mentioned here:
<https://github.com/JetBrains/compose-multiplatform/issues/3947>

So you will have to find out which package to keep in your proguard config, in your case it may not be `androidx.compose.**`

`-keep class androidx.compose.runtime.** { *; }` did fix one of the issues, going through them one by one

Yes, <http://ashampoo.com/photos|Ashampoo Photos> uses ProGuard. I had some difficulties in the past.

I ended up with something rather radical :smile: 

```-dontwarn !com.ashampoo.photos.**
-keep class !com.ashampoo.photos.** { *; }```

In addition to that I only needed the special rules for Multiplatform Compose and KotlinX Serialization, but nothing more.

I saw that suggested somewhere but wanted to avoid it. Got my application to build and _mostly_ run now but I'm at 200 lines in my proguard file... Only some issues remaining.

I need no obfuscation for the third parties that are all open source anyway. :man-shrugging: 

Yeah but the optimization / size decrease is always nice.

Ashampoo Photos is around 100 MB, including the JDK. I don’t think people care until you hit a GB or so. :slightly_smiling_face: 

My app is at 102MB now without Proguard, I'd like it double digit. :smile:

One day I might give it a second try to see how much performance I might gain, but reading that you already have 200 lines and still problems sounds like some effort to pay. :eyes: 

Ashampoo Photos for Android has a proper ProGuard config, because here size really matters, but it wasn’t so problematic like the desktop version.

Got it fully working eventually. App download size (after packaging / compressing / etc) went down from 100.0MB to 81.3MB.

Nice. Maybe you share your work one day as a Gist or so. :smile: 

If it helps anyone, here is my configuration: <https://gist.github.com/Nohus/34c45bc81cde78530deadf09dc498f0d>
Obviously it includes rules for the particular libraries that needed them in my project, but should be a good reference.