How can I read and write from / to a text file (res://, user://)

Question

Hi,

I have an app with a data.txt file in the root folder (comes pre-loaded on a mobile with the app). I want to read and write to this file. I can read from the file using res:// but I cannot write to it since I have to use 'user://' prefix, which points to a different location I believe.

Here's my code fragment:

func _on_btn_read_pressed():
    var file_read = File.new()
    if(file_read.open("res://data.txt", File.READ) != 0):
        $lbl_file_data.text = "error opening file"
    else:
        $lbl_file_data.text = file_read.get_as_text()
        file_read.close()
    pass 


func _on_btn_write_pressed():
    var text = $TextEdit.text
    var file_write = File.new()
    if(!file_write.file_exists("user://data.txt")):
        $lbl_file_data.text = "no file to write to"
   elif(file_write.open("user://data.txt", File.WRITE) != 0):
        $lbl_file_data.text = "error writing to file"
    else:
        file_write.seek_end()
        file_write.store_line(text)
        file_write.close()

How can I write to the same file that I read data from? Do I have to create a file programatically on app startup?

Thanks

ps...the automatic 'code sample' button in writing this question may create erroneous code formatting

Answer 1

you need to specify *.txt at the export setting to include non-godot resource.

Export > Select target platform > Resources tab on right side > Filters to export non-resource files

Comments

It doesn't work:
I have "res://level1.txt" file and I specify *.txt at the export setting to include non-godot resource.
at runtime, still file not found error.

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I am running into this same problem with a .json file I have in my project at res://strings/en_US.json -- When I extract the exported .apk file, it doesn't contain the strings/ folder or anything inside of it. I've specified *.json in my export settings.