New to Ionic/Capacitor

[cmlaiter]

I previously was using react native/expo, but have decided to pivot to Ionic/Capacitor for my project.

I CANNOT get it to compile and show in android. It seems like capacitor keeps forcing me to Java 21, but everything online is telling me to use 17. I am trying to launch on Android Studio (Narwhal) using the android emulator. My java_home is 17

I just want to get to the point that I can see a Hello World screen. Please help! Tell me what to look for to figure out why the versions aren't cooperating.

The biggest error I can't get past is:
Execution failed for task ':capacitor-android:compileDebugJavaWithJavac'.
> error: invalid source release: 21

[ygyg70]

From my experience, this error is likely related to Kotlin configuration.

Sharing here my config that works:
Capacitor version - latest - 7.4.2
Gradle version: 8.11.1 - via wrapper - distributionUrl=https://services.gradle.org/distributions/gradle-8.11.1-all.zip
Compiler version - 21 - see attached script
Kotlin compiler version - 1.9.25 - see attached script
Configured via studio settings:
Kotlin language version: 2.1
Kotlin API version: 2.1
Kotlin target JVM version: 17

capacitor.build.gradle.txt
build.gradle.txt

If anyone see this comment and has suggestions, please share!

[jcesarmobile]

You have to use JDK 21 or newer for Capacitor 7
Android Studio Narwhal should already have JDK 21 included
If using macOS, I recommend setting the JAVA_HOME to the path where Android Studio has the JDK, /Applications/Android Studio.app/Contents/jbr/Contents/Home