app: [Android] replace PlatformHandle with JavaVM, AppContext methods

Clearer and fewer types.

Signed-off-by: Elias Naur <mail@eliasnaur.com>

app/internal/window/os_android.go

@@ -61,6 +61,8 @@ var dataDirChan = make(chan string, 1)
 
 var theJVM *C.JavaVM
 
+var appContext C.jobject
+
 var views = make(map[C.jlong]*window)
 
 var mainWindow = newWindowRendezvous()
@@ -91,15 +93,19 @@ func runGoMain(env *C.JNIEnv, class C.jclass, jdataDir C.jbyteArray, context C.j
 	dataDir := C.GoStringN((*C.char)(unsafe.Pointer(dirBytes)), n)
 	dataDirChan <- dataDir
 	C.gio_jni_ReleaseByteArrayElements(env, jdataDir, dirBytes)
-	context = C.gio_jni_NewGlobalRef(env, context)
+	appContext = C.gio_jni_NewGlobalRef(env, context)
 
-	PlatformHandle = &Handle{
-		JVM:     uintptr(unsafe.Pointer(theJVM)),
-		Context: uintptr(context),
-	}
 	runMain()
 }
 
+func JavaVM() uintptr {
+	return uintptr(unsafe.Pointer(theJVM))
+}
+
+func AppContext() uintptr {
+	return uintptr(appContext)
+}
+
 func GetDataDir() string {
 	return <-dataDirChan
 }