I'm working on a project. I started with updating the libraries after not touching the project for around a year or so. Updated most of the libraries except implementation 'com.google.android.gms:play-services-maps:9.2.1' and implementation 'com.google.android.gms:play-services-gcm:9.2.1' because there is an older version of a library supplying push for me, which I can't update right now. Anyways, after a while I opened some classes and noticed that for example SupportMapFragment is red and says "Unresolved reference". This happens with every class that comes out of the two libraries. However, the project still runs and still works as expected.
Why is this happening? And how can I fix it?
I will list some other libraries which could have an influence below:
- $support_library_version = '27.1.0'
- implementation "com.android.support:appcompat-v7:$support_library_version"
- implementation "com.android.support:recyclerview-v7:$support_library_version"
- implementation "com.android.support:cardview-v7:$support_library_version"
- implementation "com.android.support:design:$support_library_version"
- implementation 'com.squareup.retrofit2:retrofit:2.3.0'
- implementation 'com.squareup.picasso:picasso:2.5.2'
- implementation('com.crashlytics.sdk.android:crashlytics:2.9.1@aar') { transitive = true; }
They got updated from these versions:
- $support_library_version = '24.1.1'
- compile 'com.squareup.retrofit2:retrofit:2.0.2'
- compile 'com.squareup.picasso:picasso:2.5.2'
- Crashlytics was not added in previous versions
