I am trying to compile a sample Android application (original source) written in kotlin on the command line.

The Java version of it compiles without a problem.

This is the file hierarchy layout:

.
├── AndroidManifest.xml
├── bin
├── mykey.keystore
├── obj
│   └── com
│       └── example
│           └── helloandroid
├── res
│   ├── drawable
│   ├── layout
│   │   └── activity_main.xml
│   └── values
│       └── strings.xml
└── src
    └── com
        └── example
            └── helloandroid
                ├── MainActivity.java
                └── MainActivity.kt

If I compile the Java version I issue the following commands:

1. aapt package -f -m -J ./src -M ./AndroidManifest.xml -S ./res -I /opt/android-sdk/platforms/android-28/android.jar
2. javac -d obj -classpath src -bootclasspath /opt/android-sdk/platforms/android-28/android.jar src/com/example/helloandroid/*.java
3. dx --dex --output=./bin/classes.dex ./obj
4. aapt package -f -m -F ./bin/hello.unaligned.apk -M ./AndroidManifest.xml -S ./res -I /opt/android-sdk/platforms/android-28/android.jar
5. cp ./bin/classes.dex .
6. aapt add ./bin/hello.unaligned.apk classes.dex
7. apksigner sign --ks mykey.keystore ./bin/hello.apk
8. Install the App via adb on a Google Pixel and it works.

Now the question is: How would I replicate that "workflow" with kotlin?

As far as I understand the only steps I need to change are the first two. I need to generate a R.kt file, because otherwise R is undefined and step two where I actually compile the sources to classes. After that there should be no difference ?

I don't want to use gradle. I just want to understand how I can use the command line utils.

Thanks in advance for any helpful answer :D

EDIT: The Source is completely in Kotlin, not a mix of Java+Kotlin as shkschneider suggested. The MainActivity.java is essentially the same Code as MainActivity.kt I just want to switch to Kotlin.