IssueTracker

Project: platform/frameworks/support
Branch: androidx-master-dev

commit 1e5efa0794e826bc1b3b153796ed5659fb97fca2
Author: Ian Lake <ilake@google.com>
Date:   Fri Feb 08 10:23:54 2019

    Prefer exact matching deep links
   
    Instead of only taking into account the
    number of matching arguments for deep link
    matching, always prefer exact matches.
   
    Test: updated tests
    BUG: 123969518
    Change-Id: Ibd8ab5b6ba251991fa994ebd297bcb9ffb5851bd

M       navigation/common/src/androidTest/java/androidx/navigation/NavDestinationAndroidTest.kt
M       navigation/common/src/androidTest/java/androidx/navigation/NavGraphAndroidTest.kt
M       navigation/common/src/main/java/androidx/navigation/NavDeepLink.java
M       navigation/common/src/main/java/androidx/navigation/NavDestination.java

https://android-review.googlesource.com/898367
https://goto.google.com/android-sha1/1e5efa0794e826bc1b3b153796ed5659fb97fca2

This is fixed internally and will be available in Navigation 1.0.0-beta02 - we'll always prefer an exact deep match link (where exact means your deep link does not contain any .* or {param} tags)

Support of Serializable objects is not enough for enums, you definitely need also the support of default values.

Project: platform/frameworks/support
Branch: androidx-master-dev

commit 6f59e3d74d0da5a4bf79c8480f56964e3af47f1c
Author: Wojtek Kaliciński <wkal@google.com>
Date:   Mon Jul 23 20:17:19 2018

    Support more types for args
   
    Provides support for Serializable, enums,
    as well as arrays of primitive types and Parcelables
    in Navigation arguments.
   
    Only enums support default values other than @null,
    in the form of the enum literal (without class name),
    e.g. app:defaultValue="READ"
   
    Test: unit tests updated
    BUG: 111487504
    BUG: 111316353
    Change-Id: I7e5abbc8ed0950bfdef292342dbe1fb34a5c4b17

M       navigation/runtime/src/androidTest/java/androidx/navigation/NavInflaterTest.kt
A       navigation/runtime/src/androidTest/java/androidx/navigation/test/TestEnum.java
M       navigation/runtime/src/androidTest/res/navigation/nav_default_arguments.xml
M       navigation/runtime/src/main/java/androidx/navigation/NavInflater.java
M       navigation/safe-args-generator/src/main/kotlin/androidx/navigation/safe/args/generator/NavParser.kt
M       navigation/safe-args-generator/src/main/kotlin/androidx/navigation/safe/args/generator/NavParserErrors.kt
M       navigation/safe-args-generator/src/main/kotlin/androidx/navigation/safe/args/generator/NavWriter.kt
M       navigation/safe-args-generator/src/main/kotlin/androidx/navigation/safe/args/generator/Types.kt
M       navigation/safe-args-generator/src/tests/kotlin/androidx/navigation/safe/args/generator/NavParserTest.kt
M       navigation/safe-args-generator/src/tests/kotlin/androidx/navigation/safe/args/generator/NavWriterTest.kt
M       navigation/safe-args-generator/src/tests/test-data/expected/nav_writer_test/MainFragmentArgs.java
M       navigation/safe-args-generator/src/tests/test-data/expected/nav_writer_test/Next.java
M       navigation/safe-args-generator/src/tests/test-data/naive_test.xml

https://android-review.googlesource.com/720246
https://goto.google.com/android-sha1/6f59e3d74d0da5a4bf79c8480f56964e3af47f1c

This is fixed internally and will be available in 1.0.0-alpha08

What happened if I declaire app:argType="androidx.navigation.test.TestEnum" and turn on proguard/R8? Because both ProGuard and R8 will optimize trivial enums into ints.

Since you need to explicitly keep argTypes as per https://issuetracker.google.com/issues/122634648, they'll be kept.

Thanks. Just saw the latest documentation.