Android Studio showing error in valid Kotlin Code

Question

I reformatted my mac recently and installed everything from scratch. So I did it with Android Studio too and then I imported an existing project of mine.

As you can see in the screenshot, when I use Long.parseLong(), Android Studio is telling me that it is not a valid function but it is a valid function in Kotlin.

How do I fix this?

Previous Attempts to fix. 1. Reinstall JDK and JRE 2. Reinstall Android Studio 3. Clean and Rebuild gradle 4. Android Studio -> File -> Invalidate Caches/Restart

None of these steps worked. What is wrong with my Android Studio?

Check your import statements if it is correct.

shizhen
– shizhen

2019-01-10 09:29:38 +00:00
Commented Jan 10, 2019 at 9:29 — shizhen
– shizhen, Commented Jan 10, 2019 at 9:29
Yup. Got this import java.util.*

Sriram R
– Sriram R

2019-01-10 09:30:30 +00:00
Commented Jan 10, 2019 at 9:30 — Sriram R
– Sriram R, Commented Jan 10, 2019 at 9:30
Long class is in the java.lang package, not java.util

Sergei Glotov
– Sergei Glotov

2019-01-10 09:39:29 +00:00
Commented Jan 10, 2019 at 9:39 — Sergei Glotov
– Sergei Glotov, Commented Jan 10, 2019 at 9:39

Sergei Glotov · Accepted Answer · 2019-01-10 14:07:23Z

4

It's Kotlin, not Java

Compiler tries to use Long class from the Kotlin library, the class doesn't have parseLong() method.

You have two options:

Fully qualify class (add the package name)

java.lang.Long.parseLong(msg.time)

Or more "Kotlin way"

msg.time.toLong()

edited Jan 10, 2019 at 14:07

answered Jan 10, 2019 at 9:38

Sergei Glotov

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Comments

Wijdan · Accepted Answer · 2019-01-10 10:30:02Z

0

parseLong(val);

Is a java method and this is Kotlin. Android Studio is working fine.

You don't need to do anything with Android Studio.

answered Jan 10, 2019 at 10:30

Wijdan

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