Save and load system just returns null

[simonrxcopy0]

Godot Version

4.2

Question

Hi, just no matter how i do it when i try to save my resource it just returns null on loading

I’m making it to export to android but even in just gameview it wont save

i have tried fileacces aswell but with no luck.

Thanks for any help

class_name folder_Manager
extends Resource


@export var folders : Array[FolderObject] 

func _init():
	print("")

func add_Folder(fo : FolderObject)->void:
	folders.append(fo)

class_name save_Load_Manager
extends Control

const save_Path : String =  "user://Savedata.res"
var fm = folder_Manager.new()

# Called when the node enters the scene tree for the first time.
func _ready():
	verify_save_dir(save_Path)
	
func verify_save_dir(path:String):
	var dir = DirAccess.make_dir_absolute(path)
	if(dir == null): 
		print("null")
	


func _on_button_pressed():
	var a = FolderObject.new("hej", Button.new())
	fm.add_Folder(a)
	ResourceSaver.save(fm, save_Path)


func _on_button_2_pressed():
	fm =ResourceLoader.load(save_Path).duplicate(true)
	print(fm)# Replace with function body.

extends Resource
class_name FolderObject

@export var Cards =
@export var textName : String
var button

func _init(name : String, b : Button):
textName = name
button = b

func add_Card(c : Card):
Cards.append(c)

type or paste code here

[dragonforge-dev]

Couple questions:

1. Have you tried this code on your computer? Does it work there?
2. Are you using a debug apk or production apk?
3. Are you using an emulator or a physical device to test this?
4. What version of the Android OS are you using? Is the Godot version you’re using compatible with the android version you are using?

[simonrxcopy0]

1. yes, it dosn’t work, i just do it in the game view
2. no clue, i havent tested it on the phone as it dosn’t even work in game view

thanks for your time

[gertkeno]

@simonrxcopy0

	var dir = DirAccess.make_dir_absolute(path)

You are making it a directory, you cannot save a file over a directory. remove this verify_save_dir function.

You can check the error messages you may recieve too

func _on_button_pressed():
	var a = FolderObject.new("hej", Button.new())
	fm.add_Folder(a)
	var err := ResourceSaver.save(fm, save_Path)
	if err != OK:
		push_warning("Failed to save: %s" % error_string(err))

[simonrxcopy0]

I did your changes and got: Can’t open file, couldn’t unfortunatly search my way as to why it can’t open it.

i did try the other way but in the load function on the "print(folderMana…) i get an error where the object is “encoded” so no luck there either, Thanks for your time:

func loadSave():
	var save_file = FileAccess.open("user://savegame.tres", FileAccess.Read)
	var err := save_file.get_error()
	if(err == OK):
		folderManager = save_file.get_var()
		save_file.close()
		print(folderManager.folders.size())
	else: print(error_string(err) + "H")
	
func save():
	var save_file = FileAccess.open("user://savegame.tres", FileAccess.WRITE)
	var err := save_file.get_error()
	if(err != OK):
		print(error_string(err))
	else:
		var a = FolderObject.new("hej", Button.new())
		folderManager.add_Folder(a)
		save_file.store_var(folderManager)
		save_file.close()
		folderManager = null

[gertkeno]

store_var may not work for whole resources/objects

[simonrxcopy0]

Thank you, i got it to work with your help

I fixed it by manually adding a “save_file” in the appdata

func _on_button_pressed():
	var a = FolderObject.new("hej", Button.new())
	fm.add_Folder(a)
	fm.add_Folder(a)
	fm.add_Folder(a)
	print(fm.folders.size())
	var err := ResourceSaver.save(fm, save_Path)
	fm = null
	
	if err != OK:
		print(error_string(err))


func _on_button_2_pressed():
	fm = ResourceLoader.load(save_Path)
	print(fm.folders.size())# Replace with function body.

[gertkeno]

I believe the properties have to be @exported for ResourceSaver to save them, make sure folders is exported