Android Studio 3.1: mixing versions can lead to runtime crashes

Question

Have recently upgraded to Android Studio 3.1, and at the same time I\'m trying the Android P preview.

I\'m getting the following error on compiling:

Answer 1

this error came,when i connect app to firebase.

no need to add any thing.

just put mouse cursor on error line(below one) and press Alt+Enter

(implementation 'com.android.support:appcompat-v7:28.0.0')

in the list enter first option.(noinspection)

After that it looks like this,

//noinspection GradleCompatible implementation 'com.android.support:appcompat-v7:28.0.0'