Android does not support Java 8. It only supports up to Java 7 (if you have kitkat) and still it doesn’t have invokedynamic, only the new syntax sugar. If you want to use lambdas, one of the major features of Java 8 in Android, you can use gradle-retrolamba.
Which version of Java is used for Android?
Current versions of Android use the latest Java language and its libraries (but not full graphical user interface (GUI) frameworks), not the Apache Harmony Java implementation, that older versions used. Java 8 source code that works in latest version of Android, can be made to work in older versions of Android.
Can I use Java in Android Studio?
Use Android Studio and Java to write Android apps
You write Android apps in the Java programming language using an IDE called Android Studio. Based on JetBrains’ IntelliJ IDEA software, Android Studio is an IDE designed specifically for Android development.