68 lines
1.4 KiB
Go
68 lines
1.4 KiB
Go
//+build !darwin !linux
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package main
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/*
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#cgo LDFLAGS: -landroid -llog
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#include <stdlib.h>
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#include "jni_android.h"
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*/
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import "C"
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import (
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"errors"
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"fmt"
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"log"
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"runtime"
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"unsafe"
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"gioui.org/app"
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"gioui.org/io/event"
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_ "gioui.org/app/permission/storage"
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)
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type JNIEnv = C.JNIEnv
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var (
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startpath="/storage/emulated/0/Documents"
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jvm uintptr
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theJVM *C.JavaVM
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)
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func impl_start() { }
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func handleEvent(e event.Event) {
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switch e := e.(type) {
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case app.AndroidViewEvent:
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log.Print("ViewEvent")
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theJVM = (*C.JavaVM)(unsafe.Pointer(app.JavaVM()))
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RunInJVM(func(env *JNIEnv) {
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C.registerFragment(env, (C.jobject)(unsafe.Pointer(e.View)))
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})
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}
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}
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func RunInJVM(f func(env *C.JNIEnv)) {
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runtime.LockOSThread()
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defer runtime.UnlockOSThread()
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var env *C.JNIEnv
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var detach bool
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if res := C.GetEnv(theJVM, &env, C.JNI_VERSION_1_6); res != C.JNI_OK {
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if res != C.JNI_EDETACHED {
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panic(fmt.Errorf("JNI GetEnv failed with error %d", res))
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}
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if C.AttachCurrentThread(theJVM, &env, nil) != C.JNI_OK {
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panic(errors.New("runInJVM: AttachCurrentThread failed"))
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}
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detach = true
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}
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if detach {
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defer func() {
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C.DetachCurrentThread(theJVM)
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}()
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}
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f(env)
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}
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