Clear Text Field

ultraluxurylife · August 21, 2011, 12:04pm

I’m using several nativeText Fields with the numbers keyboard. Is there any type of coding that you can attach to a button that will clear a text field of the data that is in it? I know i can back it out with the keyboard but I wanted to see if there was a way to do it with code after a button is pushed or tapped.

I would attach it to this code:

[lua]local playbutton = display.newImage (“play.png”)
localGroup:insert(playbutton)
playbutton.x = 100
playbutton.y = 55
playbutton.xScale = .5
playbutton.yScale = .5

local function playbuttonfn (event)
director:changeScene( “titlescreen”, “flip” )
media.playEventSound( “bloop_x.caf” )
end

playbutton:addEventListener (“tap”, playbuttonfn)[/lua] [import]uid: 72372 topic_id: 14134 reply_id: 314134[/import]

renvis1 · August 21, 2011, 5:50pm

try setting the text property to nil.
[lua]numberField.text = nil [/lua]
[import]uid: 71210 topic_id: 14134 reply_id: 52025[/import]

ultraluxurylife · August 22, 2011, 12:18pm

Won’t that effect if I have a global variable that is supplying the output to that textfield? I don’t want to stop what is coming to that textfield. I just want to keep that data from populating the new game the player starts. [import]uid: 72372 topic_id: 14134 reply_id: 52146[/import]

afonseca · August 22, 2011, 1:44pm

Setting the text property of the textfield won’t affect your global, it will just clear the view. [import]uid: 8692 topic_id: 14134 reply_id: 52163[/import]

ultraluxurylife · August 22, 2011, 3:26pm

Okay so where do I set this at? In the textfield section or in the play again area. this is my code below.

[lua]module(…, package.seeall)

function new()
local localGroup = display.newGroup()

local inputFontSize = 80
local inputFontHeight = 80
local tHeight = 100
local ui = require(“ui”)

local number
if _G.numberSix ~= nil then
number = _G.numberSix
elseif _G.numberTen ~= nil then
number = _G.numberTen
else
number = 0
end

local screen9 = display.newImage (“screen9.png”)
localGroup:insert(screen9)
–> This sets Screen9

–>This is how we reset the level
local playbutton = display.newImage (“play.png”)
localGroup:insert(playbutton)
playbutton.x = 100
playbutton.y = 55
playbutton.xScale = .5
playbutton.yScale = .5

local function playbuttonfn (event)
director:changeScene( “titlescreen”, “flip” )
media.playEventSound( “bloop_x.caf” )
end

playbutton:addEventListener (“tap”, playbuttonfn)
local rateit = display.newImage (“rateit.png”)
rateit.x = 225
rateit.y = 55
rateit.xScale = .5
rateit.yScale = .5
localGroup:insert(rateit)
–>This places the rateit button

local function doRating(event)
if event.phase == “ended” then
local url = “itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa”
url = url … “/wa/viewContentsUserReviews?”
url = url … “type=Purple+Software&id=”
url = url … “453641732”

system.openURL(url)
end
end

rateit:addEventListener(“touch”, doRating)
–> Adds the Rate It functionality. Be sure to change the APP ID to your OWN;

local cleanUp = function()
rateitbutton:removeEventListener(“touch”, doRating)
play:removeEventListener (“touch”, touchedPlay)
end

l
– show the reminder in a textfield
numberFieldReminder = native.newTextField( 180, 315, 85, tHeight, onnumberFieldReminder)
numberFieldReminder.font = native.newFont( native.systemFontBold, inputFontSize )
numberFieldReminder.inputType = “number”
numberFieldReminder.align = “center”
numberFieldReminder.text = divisionBal
localGroup:insert(numberFieldReminder)
–>MUST return a display.newGroup()

–> This is how we end every file except for director and main, as mentioned in my first comment

return localGroup

end[/lua] [import]uid: 72372 topic_id: 14134 reply_id: 52177[/import]

afonseca · August 22, 2011, 3:42pm

I wanted to see if there was a way to do it with code after a button is pushed or tapped.

From what you say above I’d say put it in your button press handler function. [import]uid: 8692 topic_id: 14134 reply_id: 52181[/import]

ultraluxurylife · August 22, 2011, 4:22pm

Okay I tried the code below but it didn’t work.

[lua]–>This is how we reset the level
local playbutton = display.newImage (“play.png”)
localGroup:insert(playbutton)
playbutton.x = 100
playbutton.y = 55
playbutton.xScale = .5
playbutton.yScale = .5

local function playbuttonfn (event)
numberFieldReminder = nil
director:changeScene( “titlescreen”, “flip” )
media.playEventSound( “bloop_x.caf” )

end

playbutton:addEventListener (“tap”, playbuttonfn)[/lua] [import]uid: 72372 topic_id: 14134 reply_id: 52195[/import]

afonseca · August 22, 2011, 5:58pm

You need to set the text property of the display object, not set the object to nil. [import]uid: 8692 topic_id: 14134 reply_id: 52210[/import]

ultraluxurylife · August 22, 2011, 6:28pm

I don’t understand can you post for me? [import]uid: 72372 topic_id: 14134 reply_id: 52215[/import]

afonseca · August 22, 2011, 7:32pm

Instead of numberFieldReminder = nil, do this:

numberFieldReminder.text = nil

ultraluxurylife · August 23, 2011, 3:56am

Okay it’s still not working. What am I doing wrong. Just so I can refresh what is happening. I have a game that you have two paths you can choose to play the game and for each path it gives a result on the last screen. You can then choose the play again button which takes you back to the first screen. I am finding that if you choose path one every time the game works fine but if you choose Path One and then hit the play again button and go to path two the result will give you the answer you had from path one.

I am trying to reset the game so that every time you play or play again you get a fresh start. I am adding the text field = nil but that’s not working. Here is my code.

[lua]module(…, package.seeall)

function new()
local localGroup = display.newGroup()
local inputFontSize = 80
local inputFontHeight = 80
local tHeight = 100
local ui = require(“ui”)

local number
if _G.numberSix ~= nil then
number = _G.numberSix
elseif _G.numberTen ~= nil then
number = _G.numberTen
else
number = 0
end

local screen9 = display.newImage (“screen9.png”)
localGroup:insert(screen9)
–> This sets Screen9

–>This is how we reset the level
local playbutton = display.newImage (“play.png”)
localGroup:insert(playbutton)
playbutton.x = 100
playbutton.y = 55
playbutton.xScale = .5
playbutton.yScale = .5

local function playbuttonfn (event)
numberFieldReminder.text = nil
director:changeScene( “titlescreen”, “flip” )
media.playEventSound( “bloop_x.caf” )

end

playbutton:addEventListener (“tap”, playbuttonfn)
local rateit = display.newImage (“rateit.png”)
rateit.x = 225
rateit.y = 55
rateit.xScale = .5
rateit.yScale = .5
localGroup:insert(rateit)
–>This places the rateit button

local function doRating(event)
if event.phase == “ended” then
local url = “itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa”
url = url … “/wa/viewContentsUserReviews?”
url = url … “type=Purple+Software&id=”
url = url … “453641732”

system.openURL(url)
end
end

rateit:addEventListener(“touch”, doRating)
–> Adds the Rate It functionality. Be sure to change the APP ID to your OWN;

local cleanUp = function()
rateitbutton:removeEventListener(“touch”, doRating)
play:removeEventListener (“touch”, touchedPlay)
end

local function onnumberFieldReminder( event )
if ( “ended” == event.phase ) or ( “submitted” == event.phase ) then

end
end

– show the reminder in a textfield
numberFieldReminder = native.newTextField( 180, 315, 85, tHeight, onnumberFieldReminder)
numberFieldReminder.font = native.newFont( native.systemFontBold, inputFontSize )
numberFieldReminder.inputType = “number”
numberFieldReminder.align = “center”
numberFieldReminder.text = divisionBal

localGroup:insert(numberFieldReminder)

–>MUST return a display.newGroup()

–> This is how we end every file except for director and main, as mentioned in my first comment

return localGroup

end[/lua] [import]uid: 72372 topic_id: 14134 reply_id: 52284[/import]

afonseca · August 23, 2011, 11:29am

Looks like you need to clear your divisionBal variable when you come back into this screen since you’re setting it in this module at the bottom. [import]uid: 8692 topic_id: 14134 reply_id: 52368[/import]

ultraluxurylife · August 23, 2011, 11:38am

Yes that’s what I’m trying to do. How do I do that? I would rather clear it as I tap the play it again button.

I don’t want to clear when I’m entering the screen or the result the player is looking for will not show up. It would mess up the game that way. [import]uid: 72372 topic_id: 14134 reply_id: 52371[/import]

afonseca · August 23, 2011, 11:46am

I would rather clear it as I tap the play it again button.

That sounds like the place to do it. [import]uid: 8692 topic_id: 14134 reply_id: 52373[/import]

ultraluxurylife · August 23, 2011, 11:56am

Yes I know where to put it but what should I put? This is what I tried but it didn’t work.

[lua]–>This is how we reset the level
local playbutton = display.newImage (“play.png”)
localGroup:insert(playbutton)
playbutton.x = 100
playbutton.y = 55
playbutton.xScale = .5
playbutton.yScale = .5

local function playbuttonfn (event)
divisionBal = nil
director:changeScene( “titlescreen”, “flip” )
media.playEventSound( “bloop_x.caf” )

end

playbutton:addEventListener (“tap”, playbuttonfn)[/lua]
[import]uid: 72372 topic_id: 14134 reply_id: 52375[/import]

afonseca · August 23, 2011, 12:07pm

Where is divisionBal set? Maybe you’re setting it somewhere else when you come back into this screen. [import]uid: 8692 topic_id: 14134 reply_id: 52376[/import]

ultraluxurylife · August 23, 2011, 12:10pm

It has to be set when it comes back to the screen or you will not be able to get the answer for that session of the game.

I want it cleared when you leave the screen but to work when you come back on the screen.

The problem is that it is maintaing the answer from a previous game so I need to clear it every time.

Right now the only way to completely clear it is to go Path one or to go to the homescreen of the device. [import]uid: 72372 topic_id: 14134 reply_id: 52377[/import]

afonseca · August 23, 2011, 12:29pm

I think the textField stuff is working properly, you just need to figure out your game state and preserve/clear the value appropriately based on what screen you are in. [import]uid: 8692 topic_id: 14134 reply_id: 52379[/import]

ultraluxurylife · August 23, 2011, 12:36pm

Yes I agree which is what I was posting this for to figure out how to do it. There is not a problem with any of the code I just don’t know how to clear it out. I’ll repost for others to comment. [import]uid: 72372 topic_id: 14134 reply_id: 52380[/import]

afonseca · August 23, 2011, 12:43pm

I see, I was responding based on your original question as to how to clear the text field in code. You’ll probably want to make a separate post with details on your question on logic specific to your game. [import]uid: 8692 topic_id: 14134 reply_id: 52381[/import]