ktx | Kotlin extensions for the libGDX game framework | Game Engine library

After the build has failed go to AndroidManifest.xml and in the bottom click merged manifest see which activities which have intent-filter but don't have exported=true attribute. Or you can just get the activities which are giving error.

Add these activities to your App manifest with android:exported="true" and app tools:node="merge" this will add exported attribute to the activities giving error.

Example:

Given your navigation graph, there is no way to associate fragmentA2 with your menu item fragmentA, so fragmentA is not selected when you return to fragmentA2. As per this issue:

NavigationUI has always used the current destination and what graph it is part of as the source of truth for what tab should be selected.

This can be seen by calling navigate() to go to your SecondFragment - even though you haven't used the bottom nav button, the selected tab was changed because the current destination has changed to R.id.frag_second.

So when you navigate() to R.id.frag_hint via your button in HomeFragment, NavigationUI receives a callback that the current destination has changed to R.id.frag_hint. It looks at that NavDestination and notes that there's no menu item that matches R.id.frag_hint. It then looks at the destination's parent graph - your R.id.sample element. There's no menu item that matches that ID either, so NavigationUI can't associated that destination with any menu item and therefore simply does nothing. That is true on all versions of Navigation.

So what is different when you tap on a bottom navigation item? Well, nothing different from a NavigationUI perspective in fact: the exact same code runs and the current destination and what graph it is part of is the source of truth for what tab should be selected. In the Navigation 2.3.5, there was no state saved for each tab, so it only 'worked' because selecting a tab forced the ID of the current destination to match the destination of the menu item you just tapped.

So what you're seeing in your sample app is that there's no link between R.id.frag_hint and any menu item, which means NavigationUI does nothing. If you want to link R.id.frag_hint to your Home tab, then that's exactly what a nested navigation graph can be used for.

I.e., your navigation graph should instead look like:

I fixed it my problem by updating current kotlin version to latest version and moshi version to 1.12.0

In app/build.gradle change jdk7 to Java jdk8

before

I got this error because of an incorrect import:

I'm not sure what you're using to code, but in order to set it in Android Studio, open the manifest of your project and under the "activity" section, put android:exported="true"(or false if that is what you prefer). I have attached an example.

After upgrading Android Gradle Plugin from version 3.4.2 to 7.0.0 (and Gradle from 6 to 7) I also stared having the same error. In my case it turned out that AndroidManifest.xml was inside the directory that was pointed to by resources.srcDir. Gradle tried to copy the AndroidManifest.xml from that directory into APK where a compiled version was already bundled.

The issue is that your compile SDK is 31, you are targetting API 31 (Android 12) and not setting the exported attribute.

You need to specify android:exported="true" in the manifest.

If your app targets Android 12 and contains activities, services, or broadcast receivers that use intent filters, you must explicitly declare the android: exported attribute for these app components.

Dependency: androidx.lifecycle:lifecycle-runtime-ktx:2.4.0. The issue is with this dependency, there may be some transitive dependency error. I would suggest use the alpha version of this dependency, worked for me. Replace with this dependency : androidx.lifecycle:lifecycle-*:2.4.0-alpha03