Android N Java8 java.time

问题

I updated to the latest Android N sdk. The only thing I don't understand is why I cannot import java.time into my code? I thought Java8 is available through Android N. Then why didn't Google add java.time package?

回答1:

Android N is not supporting all the features of Java 8. Following features are only supported:

• Default and static interface methods
• Lambda expressions
• Repeatable annotations

Reflection and language-related APIs:

• java.lang.FunctionalInterface
• java.lang.annotation.Repeatable
• java.lang.reflect.Method.isDefault()

and Reflection APIs associated with repeatable annotations, such as AnnotatedElement.getAnnotationsByType(Class)

Utility APIs:

• java.util.function

For more info check the following link: http://developer.android.com/preview/j8-jack.html

回答2:

There is backport library of java.time APIs for Android that can be used

https://github.com/JakeWharton/ThreeTenABP

回答3:

java.time package was added only in API 26 (Android O):

https://developer.android.com/reference/java/time/package-summary.html

来源：https://stackoverflow.com/questions/36000997/android-n-java8-java-time