settings.lua for storing info
GitHub URL:
https://github.com/hoan/corona-settings
settings.lua stores info in a local file. It will persis
Do this somewhere in main():
1 | settings.load() |
Then you can get values easily:
1 2 3 4 5 6 | local soundOn = settings.get('sound_on') if soundOn then print("Sound is on") else print("Sound is off") end |
You can also set values easily:
1 2 | settings.set('sound_on', false) settings.set('music_on', true) |
The info will be saved to a file as soon as settings.set is run.
The info will persist across the application restarts.
Thats all!
Replies
Posted on Thu, 2011-09-08 17:54
#2
Hey there
Please run
1 | settings.load() |
in your main function when the app starts up. Then all the info will be loaded into memory.
It currently prints "Sound is off" because of settings.set('sound_on', false) which sets 'sound_on' to false.
Posted on Thu, 2011-09-08 18:05
#3
When I do that I get the following error still
"attempt to index global 'settings' (a nil value)"
note: I did have in the version that I did not post
Posted on Thu, 2011-09-08 18:15
#4
Please do this as well
1 | require("settings") |
Posted on Thu, 2011-09-08 18:31
#5
Still no go. Was prompted for Json and I added the file.
require("settings")
-------------------------------
local testpic = display.newImage ("image.png")
testpic.x = 160
testpic.y = 230
-----------------------------------------------------
-------------------------------
local testpic1 = display.newImage ("image.png")
testpic1.x = 10
testpic1.y = 10
-----------------------------------------------------
local function loadtest (event)
settings.load()
--Then you can get values easily:
local soundOn = settings.get('sound_on')
if soundOn then
print("Sound is on")
else
print("Sound is off")
end
end
local function savetest (event)
--You can also set values easily:
settings.set('sound_on', false)
settings.set('music_on', true)
end
------------------------
testpic:addEventListener ("touch", loadtest)
testpic1:addEventListener ("touch", savetest)
settings.load()
Posted on Fri, 2011-09-09 16:19
#6
Any chance you can show a working example. I still can not get the program to work.
Posted on Sun, 2011-09-18 20:53
#7
Here is working example:
in main.lua
1 2 3 4 5 6 7 8 9 10 11 12 13 | require("settings") local json = require "json" --............ settings.load() hiScore = settings.get('hiScore') --............ if score > hiScore then settings.set('hiScore', score) end |
in settings.json
1 | {"hiScore":0} |
put json.lua, settings.lua and settings.json into the project folder
Posted on Sat, 2011-09-24 17:58
#8
I am also trying to get this to work. I have been following the examples until this last post: "put json.lua, settings.lua and settings.json into the project folder" I downloaded the settings.lua file and created the settings.json file as shown above but where do you get the json.lua file?
Posted on Sat, 2011-09-24 22:55
#9
..\Ansca\Sample Code\Networking\Facebook\
Posted on Tue, 2011-10-11 16:54
#10
Hey Everyone
I figured out the bug. It has problems parsing invalid JSON and will error. Now it will handle error and work, even if the json file isn't created:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | module(..., package.seeall) function settings.set(key, value) _G.__settings[key] = value settings.save() end function settings.get(key) if _G.__settings then return _G.__settings[key] else return nil end end function settings.save() local path = system.pathForFile("settings.json", system.DocumentsDirectory) local fh = io.open(path, "w") fh:write(json.encode(_G.__settings)) fh:close() end function settings.load() local path = system.pathForFile("settings.json", system.DocumentsDirectory) local fh, reason = io.open(path, "r") if fh then -- read all contents of file into a string local contents = fh:read("*a") local succ, data = pcall(function() return json.decode(contents) end) if succ then _G.__settings = data else _G.__settings = {} end print("Loaded settings") else print("Coulnd't load settings: " .. reason) _G.__settings = {} end end |
Posted on Tue, 2012-02-14 18:18
#11
I'm getting the error:
attempt to index field __settings ( a nil value) at line 4.
Also, do we have to have the settings.json file and make it manually? It seems pretty dumb to have to manually add each entry to settings.json like in the highscore example that you posted...
Posted on Wed, 2012-04-11 16:37
#12
Try this......
module(..., package.seeall)
function settings.set(key, value)
_G.__settings[key] = value
settings.save()
end
function settings.get(key)
if _G.__settings then
return _G.__settings[key]
else
return nil
end
end
function settings.save()
local json = require("json")
local path = system.pathForFile("appchita_settings.json", system.DocumentsDirectory)
local fh = io.open(path, "w")
fh:write(json.encode(_G.__settings))
fh:close()
end
function settings.load()
local json = require("json")
local path = system.pathForFile("appchita_settings.json", system.DocumentsDirectory)
local fh, reason = io.open(path, "r")
if fh then
-- read all contents of file into a string
local contents = fh:read("*a")
local succ, data = pcall(function()
return json.decode(contents)
end)
if succ and data then
_G.__settings = data
else
_G.__settings = {}
end
print("Loaded settings")
else
print("Coulnd't load settings: " .. reason)
-- create file because it doesn't exist yet
_G.__settings = {}
settings.save()
end
return fh
end
Can you show a working example. Every time I put the code to work I get a nil value.
My sample main:
-------------------------------
local testpic = display.newImage ("image.png")
testpic.x = 160
testpic.y = 230
-----------------------------------------------------
-------------------------------
local testpic1 = display.newImage ("image.png")
testpic1.x = 10
testpic1.y = 10
-----------------------------------------------------
local function loadtest (event)
settings.load()
--Then you can get values easily:
local soundOn = settings.get('sound_on')
if soundOn then
print("Sound is on")
else
print("Sound is off")
end
end
local function savetest (event)
--You can also set values easily:
settings.set('sound_on', false)
settings.set('music_on', true)
end
------------------------
testpic:addEventListener ("touch", loadtest)
testpic1:addEventListener ("touch", savetest)