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Unresolved Reference: Theme_AppCompat_NoActionBar in Android Project #392
Description
The flutter_mapbox_navigation plugin causes build failures due to unresolved references to Theme_AppCompat_NoActionBar in the following files:
- NavigationActivity.kt
- EmbeddedNavigationViewFactory.kt
This issue occurs because the required AppCompat theme is either not included in the plugin's dependencies or improperly referenced.
Steps to Reproduce:
- Add flutter_mapbox_navigation version 0.2.2 to a Flutter project.
- Build the project for Android using flutter build apk.
Observed Error:
Unresolved reference 'Theme_AppCompat_NoActionBar' in:
- NavigationActivity.kt (line 84)
- EmbeddedNavigationViewFactory.kt (line 35)
Activity
22chiragmodh commentedon Jun 3, 2025
You need to add implementation 'com.google.android.material:material:1.8.0'
line into root project/android/app/build.gradle dependencies block like below
dependencies { implementation 'androidx.appcompat:appcompat:1.6.1' implementation 'com.google.android.material:material:1.8.0' // other dependencies... }instead of
setTheme(R.style.Theme_AppCompat_NoActionBar)usesetTheme(com.google.android.material.R.style.Theme_MaterialComponents_NoActionBar)in NavigationActivity.kt fileinstead of
activity.setTheme(R.style.Theme_AppCompat_NoActionBar)useactivity.setTheme(com.google.android.material.R.style.Theme_MaterialComponents_NoActionBar)in EmbeddedNavigationViewFactory.kt file.your issues will solved after above changes.
Krupal001 commentedon Aug 6, 2025
instead of activity.setTheme(R.style.Theme_AppCompat_NoActionBar) use activity.setTheme(R.style.AppTheme) in EmbeddedNavigationViewFactory.kt file.
and also in NavigationActivity.kt file and your issue is resolved