Checkbox and table

loves_oi

I want to build a table which holds : id , name , age .
And checkboxes should be exist in each line. For example , i will select two lines and then clicked submit button. Then it will print these two lines. But how can i do it? How can i do checkboxes ? Is there any example?
Moreover, in order to make a good-looking table , do i have to do it with puting symetric lines manually? Or is there any easy way ?
Thanks in advance...

talis

So easy way is to do with a button class. Just when you press it your image should be persistent not like a normal button. Here is an implementation of persistent image with a normal button class.

function Switch:init(button1, button2) self.button1 = button1 self.button2 = button2 self:addChild(button1) self.state = false self.button1:addEventListener("click", self.changeState, self) self.button2:addEventListener("click", self.changeState, self) self.onChange = Event.new("onChange") end   function Switch:changeState() self.state = not self.state if self.state then if self:contains(self.button1) then self:removeChild(self.button1) end self:addChild(self.button2) else if self:contains(self.button2) then self:removeChild(self.button2) end self:addChild(self.button1) end self.onChange.state = self.state self:dispatchEvent(self.onChange) end   function Switch:getState() return self.state end   local checkboxon = Button.new(Bitmap.new(Texture.new("checkbox_checked_image")), Bitmap.new(Texture.new("checkbox_not_checked_image"))) local checkboxoff= Button.new(Bitmap.new(Texture.new("checkbox_not_checked_image")), Bitmap.new(Texture.new("checkbox_checked_image")))   switch = Switch.new(checkboxon , checkboxoff)   switch:addEventListener("onChange", function(e) print(e.state)   if e.state then --not checked state do your job inside here   else --checked state, do your job inside here end end)

Scouser

Take a look at my Simple Options Screen. It has checkboxes.

ar2rsawseen

I think there was an example somewhere.
http://www.giderosmobile.com/forum/discussion/1456/button-onoff-state

talis

actually i think this code i posted from one of your examples @ar2rsawseen

ar2rsawseen

@talis
oops, just don't let @techdojo see this )
http://www.giderosmobile.com/forum/discussion/1598/2-players-game-via-bluetooth-in-gideros#Item_10

loves_oi

@talis
i tried to compile the code in order to see what it looks like.
But i'm taking error:
switch.lua:6: bad argument #1 to 'addChild' (Sprite expected, got nil)
stack traceback:

What should i do?
switch.lua:

Switch = Core.class(Sprite)   function Switch:init(button1, button2) self.button1 = button1 self.button2 = button2 self:addChild(button1) self.state = false self.button1:addEventListener("click", self.changeState, self) self.button2:addEventListener("click", self.changeState, self) self.onChange = Event.new("onChange") end   function Switch:changeState() self.state = not self.state if self.state then if self:contains(self.button1) then self:removeChild(self.button1) end self:addChild(self.button2) else if self:contains(self.button2) then self:removeChild(self.button2) end self:addChild(self.button1) end self.onChange.state = self.state self:dispatchEvent(self.onChange) end   function Switch:getState() return self.state end   local checkboxon = Button.new(Bitmap.new(Texture.new("check_tick.png")), Bitmap.new(Texture.new("check_box.png"))) local checkboxoff= Button.new(Bitmap.new(Texture.new("check_box.png")), Bitmap.new(Texture.new("check_tick.png")))   switch = Switch.new(checkboxon , checkboxoff)   switch:addEventListener("onChange", function(e) print(e.state)   if e.state then --not checked state do your job inside here   else --checked state, do your job inside here end end)

main.lua

-- create the up and down sprites for the button local upp = Bitmap.new(Texture.new("button_up.png")) local down = Bitmap.new(Texture.new("button_down.png"))   -- create the button local button1 = Button.new(upp, down)   -- register to "click" event local click = 0 button1:addEventListener("click", function() print "Hello World" end)   button1:setPosition(40, 100) --stage:addChild(button1) ----------------------------------------------------------------------------- -- create the button local button2 = Button.new(upp, down)   -- register to "click" event local click = 0 button2:addEventListener("click", function() print "Hello World2" end)   button2:setPosition(40, 100) --stage:addChild(button2)   local switch = Switch.new() switch:changeState(button1, button2) stage:addChild(switch)

techdojo

HA - So it's not just me who has need of the excessive face palm.

Even monkeys fall out of trees!

Scouser

@loves_oi: The problem is in your main.lua. on the line

local switch = Switch.new() switch:changeState(button1, button2)

should be

local switch = Switch.new(button1, button2) switch:changeState()

maybe??

OZApps

@loves_oi, actually the error is exactly as what @scouser has spotted.

The function init takes two parameters that are set where as the changeState function takes no parameters, but you are passing no parameters to init and passing the params to changeState.

The error is on line #6, which is

self:addChild(button1)

since you have passed nothing, button1 is nil and hence the error. You could modify your functions to check that if New is called without any parameters, you could avoid setting the params and adding the child to the stage and modify the changeState to accept two parameters that can set the button1 and button2 as required.

loves_oi

After running , first screen is coming .After clicking ,second (blank) screen is coming. What is wrong with this code ? I attached the zip file of the source code example.zip.what should happen when it works correctly?
Thanks in advance.

loves_oi

@talis , what should happen when it works correctly? How can i do it?