问题
Can anyone help me about converting Kotlin code in Android Studio to Java?
I went through the below process:
Tools >> Kotlin>> Decompile Kotlin to Java
But the "Kotlin to Java" option is disabled. What should I do?
回答1:
Currently Tools >> Kotlin>> Decompile Kotlin to Java is enabled only for compiled Kotlin classes (.class, not .kt extension) located at app/build/tmp/kotlin-classes/ after a successful build.
A note to the @Uriel Frankel's workaround:
If Tools >> Kotlin >> Show Kotlin Bytecode >> Decompile button is disabled (or not shown) the Java Bytecode Decompiler plugin should be installed: Preferences >> Plugins >> search forJava Bytecode Decompiler` >> check the plugin & press OK.
回答2:
Tools >> kotlin >> Show Kotlin bytecode >> Decompile
回答3:
Seems like a bug.
Tools -> Kotlin -> Decompile Kotlin to Java
Was actually disabled for me too even after a successful build (In my side Android Studio v3.2) so, I went through this:
Click on the Kotlin (Compiled class):
Selected Tools -> Kotlin -> Show Kotlin Bytecode
Then kotlin bytecode window appeared:
Made JVM 8 Target as selected and then decompile gave me the java class.
Note that this happened when Java Bytecode Decompiler plugin was enabled on the Android Studio.
Update:
This however might have some issues even after converting to java and perhaps, we should wait for the newest releases.
回答4:
I followed Onik's answer above.
The Java Bytecode Decompiler was automatically bundled. I opened the .class file in Android Studio, and selected Tools >> Kotlin>> Decompile Kotlin to Java.
After waiting several minutes, Android Studio told me
The file is too large: 50.78 MB. Showing a read-only preview of the first 2.56 MB
and it opened a file MyKotlinClass.decompiled.java, most of which is unintelligible to me.
MyKotlinClass is approximately 300 lines long. At this point, manually re-writing the file as Java code is looking like the better option.
来源：https://stackoverflow.com/questions/50895662/converting-kotlin-to-java