Andoridx Room Rx Issue

I'm start to use latest androidx.room version that support io.reactivex return type. dependencies { def room_version = '2.1.0-alpha02' implementation 'androidx.room:room-r

Solution 1:

I had the same problem. Solved it by adding

compileOptions {
  sourceCompatibility JavaVersion.VERSION_1_8
  targetCompatibility JavaVersion.VERSION_1_8
}

in build.gradle

Solution 2:

I'm using Linux machine and combining answers of user3021656 and tynn got success build with

compileOptions {
  sourceCompatibility JavaVersion.VERSION_1_8
  targetCompatibility JavaVersion.VERSION_1_8
}

and setting Java version for Android Studio as

java version "1.8.0_191"

Java(TM) SE Runtime Environment (build 1.8.0_191-b12)