Hey, I’m using compose navigation with a custom na...

# compose

[krzysztof]

Hey, I’m using compose navigation with a custom nav type, where I subclass NavType to serialize/deserialize my type. I noticed that if a url value is stored in my type’s property, I get an error Navigation destination that matches request (…) cannot be found in the navigation graph. I found out that uri decoding the value in overridden serializeAsValue method makes it work, but I cannot find it anywhere mentioned it documentation. Is this the right approach or is there something I’m missing?

[Ian Lake]

The docs: https://developer.android.com/guide/navigation/design/kotlin-dsl#custom-types

override fun serializeAsValue(value: SearchParameters): String {
  // Serialized values must always be Uri encoded
  return Uri.encode(Json.encodeToString(value))
}

[krzysztof]

// Serialized values must always be Uri encoded

ah, gotcha, so uri encoding it was a right thing to do

[Ian Lake]

If you search for Uri.encode you'll find a couple of threads where we've talked about this before too

[Ian Lake]

You'll note that StringType does this automatically for you if you use a String type in your class