//go:generate javac -bootclasspath $ANDROID_HOME/platforms/android-29/android.jar AClass.java
//go:generate jar cf AClass.jar AClass.class
//go:generate rm AClass.class

package main

import (
	"fmt"
	"log"
	"time"

	"gioui.org/app"
)

func callJni() {
	time.Sleep(time.Second/5)
	jvm := app.JavaVM()
	ctx := app.AppContext()
	labchan <- fmt.Sprintf("JVM = %d", jvm)
	labchan <- fmt.Sprintf("Context = %d", ctx)
	SetJVM(jvm, ctx)

	RunInJVM(func(env *JNIEnv) {
		log.Print("finding class")
		cls := FindClass(env, "st/wow/git/jni/AClass")
		log.Print("getting methodID")
		mth := JniGetMethodID(env, cls, "Num", "()I")
		if mth == nil {
			labchan <- "nil method"
			return
		}
		log.Print("creating object")
		inst := CreateObject(env, cls)
		log.Print("calling method")
		val := JniCallIntMethod(env, inst, mth)
		log.Print("got result")
		labchan <- fmt.Sprintf("val = %d", val)
	})
}