How to save data on android from different fields into a text file with different data?

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UrosDobricic
Posts: 23
Joined: Wed Sep 25, 2019 6:33 pm

How to save data on android from different fields into a text file with different data?

Post by UrosDobricic » Wed Sep 25, 2019 6:42 pm

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i would be very glad if somebody help me about my problem. I'm writin an app in Livecode, and so far everything working fine.

Now i want to save the data a user created in "documents" on the users phone.

I have 5, but probably there are going to be 8 fields with different data. I wanted to safe it to a text file, so the user can upload the data into the app again if he needs this profile.

the field at the bottom is the fileName field.

I attached a screenshot of my app so far.

If the users clicks on "speichern" then it has to save the data from the fields into a variable. My thought was to save the data in 5 lines, so when I'm uploading i can just read from line to line into the fields.

Here´s my code I've written so far:

Code: Select all

on hiliteChanged

if auswahl = "speichern" then
      open file specialFolderPath("documents") & "/" & field "fileName" for write  
      put field "kapm" into line 2 of tData
      put field "hauptmm" into line 3 of tData
      put field "schlagm" into line 4 of tData
      put field "schlagmm" into line 5 of tData
      write tData to file specialFolderPath("documents") & "/" & field "fileName"  
      close file specialFolderPath("desktop") & "/" & field "fileName"  
    	
end if
end hiliteChanged
I'm using the header nav as you can see on the screenshot, that's why I´m calling with hiliteChanged

I tried this code, but it does not work.
Attachments
Screenshot at 2019-09-25 19-36-33.png

Klaus
Posts: 12204
Joined: Sat Apr 08, 2006 8:41 am
Location: Germany
Contact:

Re: How to save data on android from different fields into a text file with different data?

Post by Klaus » Wed Sep 25, 2019 6:56 pm

Hi Uros,

welcome to the forum!
Some problems in your code:

Code: Select all

on hiliteChanged
   
   ## What did the user click on?
   put the hilitedItemName of me into tAuswahl
   
   ## User clicked on "Speichern":
   if tAuswahl = "speichern" then
      
      ## Get used to the shorter URL syntax and store the complete pathname only once in a variable: 
      put specialFolderPath("documents") & "/" & field "fileName" into tFile
      
      put field "kapm" into line 2 of tData
      put field "hauptmm" into line 3 of tData
      put field "schlagm" into line 4 of tData
      put field "schlagmm" into line 5 of tData
      
      ## You are adressing two differnet files here!
      ## DOCUMENTS
      ## write tData to file specialFolderPath("documents") & "/" & field "fileName"  
      ## DESKTOP
      ## close file specialFolderPath("desktop") & "/" & field "fileName"  
      
      ## And ALWAYS use parens when concatenating pathnames and objectnames etc:
      ## write tData to file (specialFolderPath("documents") & "/" & field "fileName")
      ## close file (specialFolderPath("desktop") & "/" & field "fileName")
      
      ## Short URL syntax, a ONE-liner :-)
      put tData into url("file:" & tFile)
   end if
end hiliteChanged
Best

Klaus

P.S.
There is also a german LC forum here:
http://www.livecode-blog.de/forums/foru ... ode-forum/

UrosDobricic
Posts: 23
Joined: Wed Sep 25, 2019 6:33 pm

Re: How to save data on android from different fields into a text file with different data?

Post by UrosDobricic » Wed Sep 25, 2019 7:23 pm

Hi Klaus,

thanks for your fast reply.

I added this code, but it did not work:

Code: Select all

on hiliteChanged
   
   ## What did the user click on?
   put the hilitedItemName of me into tAuswahl
   
   ## User clicked on "Speichern":
   if tAuswahl = "speichern" then
      
      ## Get used to the shorter URL syntax and store the complete pathname only once in a variable: 
      put specialFolderPath("documents") & "/" & field "fileName" into tFile
      
      put field "kapm" into line 2 of tData
      put field "hauptmm" into line 3 of tData
      put field "schlagm" into line 4 of tData
      put field "schlagmm" into line 5 of tData
      

      put tData into url("file:" & tFile)
   end if
   
   if tAuswahl = "löschen" then
      put empty into field "kapmm"
      put empty into field "kapm"
      put empty into field "hauptmm"
      put empty into field "hauptm"
      put empty into field "schlagmm"
      put empty into field "schlagm"
   end if
   
   
   
end hiliteChanged

Klaus
Posts: 12204
Joined: Sat Apr 08, 2006 8:41 am
Location: Germany
Contact:

Re: How to save data on android from different fields into a text file with different data?

Post by Klaus » Wed Sep 25, 2019 7:37 pm

Hi Uros,

what exactly "does not work"? Do you get any error? No resulting file?
Does fld "filename" really contain a vaild filename (no extra characters like RETURN or something)?
And also check if the writing of the file was successful:

Code: Select all

...
put tData into url("file:" & tFile)

## Something went wrong, maybe we get a hint?
## THE RESULT = empty on success!
if the result <> EMPTY then
  answer "Problem:" && the result
end if
...
If you see the dialog, please tell us what it says.

In the second part you are using a wrong variable, if that is what you mean!

Code: Select all

...
## if auswahl = "löschen" then
if tAuswahl = "löschen" then
...

Best

Klaus

UrosDobricic
Posts: 23
Joined: Wed Sep 25, 2019 6:33 pm

Re: How to save data on android from different fields into a text file with different data?

Post by UrosDobricic » Wed Sep 25, 2019 7:48 pm

Hi again,

i saw my mistake with tAuswahl.

It now say's when i run it on my PC in LiveCode "Problem: Can't open file"

When i run it on my mobile phone, it doesn't create my folder at data
and therefore it doesn't save any data.
There is no Error on my phone, when i click on speichern, then just nothing happens.

The saving is the problem, the "löschen" option is working fine.

Klaus
Posts: 12204
Joined: Sat Apr 08, 2006 8:41 am
Location: Germany
Contact:

Re: How to save data on android from different fields into a text file with different data?

Post by Klaus » Wed Sep 25, 2019 8:12 pm

UrosDobricic wrote:
Wed Sep 25, 2019 7:48 pm
...
It now say's when i run it on my PC in LiveCode "Problem: Can't open file"
What is in field "filename"?
UrosDobricic wrote:
Wed Sep 25, 2019 7:48 pm
...
When i run it on my mobile phone, it doesn't create my folder at data and therefore it doesn't save any data.
? :shock:
There is no creation of any folder involved, -> specialfolderpath("documents") is already present.
UrosDobricic wrote:
Wed Sep 25, 2019 7:48 pm
There is no Error on my phone, when i click on speichern, then just nothing happens.
A runtime is NOT the IDE, so if you do not script to show errors then the script will just stop when encountering any error, so the end-user does not see anything!

UrosDobricic
Posts: 23
Joined: Wed Sep 25, 2019 6:33 pm

Re: How to save data on android from different fields into a text file with different data?

Post by UrosDobricic » Wed Sep 25, 2019 8:19 pm

Oh, ok. I thought it will create a folder with my Identifier of my app and paste it then in this folder.

But i just looked, there is no file with the text i wrote into the field "fileName"

I wrote into the field "fileName" Testdatei

My plan is to save the data from the fields into this Testdatei

No special characters, just text.

Klaus
Posts: 12204
Joined: Sat Apr 08, 2006 8:41 am
Location: Germany
Contact:

Re: How to save data on android from different fields into a text file with different data?

Post by Klaus » Wed Sep 25, 2019 8:25 pm

OK, did you try to check "the result" as described above?
Maybe you can post your complete script?

UrosDobricic
Posts: 23
Joined: Wed Sep 25, 2019 6:33 pm

Re: How to save data on android from different fields into a text file with different data?

Post by UrosDobricic » Wed Sep 25, 2019 8:32 pm

The result is "Can't open file"

What i dont't understand is, why he is trying to open a file?
Or is he opening the file to write in it?

This is what i get when i click on the speichern button after adding your code.

My script in the menubar:

Code: Select all

on hiliteChanged
   
   ## What did the user click on?
   put the hilitedItemName of me into tAuswahl
   
   ## User clicked on "Speichern":
   if tAuswahl = "speichern" then
      
      ## Get used to the shorter URL syntax and store the complete pathname only once in a variable: 
      put specialFolderPath("documents") & "/" & field "fileName" into tFile
      
      put field "kapm" into line 2 of tData
      put field "hauptmm" into line 3 of tData
      put field "schlagm" into line 4 of tData
      put field "schlagmm" into line 5 of tData
      
      
      put tData into url("file:" & tFile)
      
      ## Something went wrong, maybe we get a hint?
      ## THE RESULT = empty on success!
      if the result <> EMPTY then
         answer "Problem:" && the result
      end if
   end if
   
   if tAuswahl = "löschen" then
      put empty into field "kapmm"
      put empty into field "kapm"
      put empty into field "hauptmm"
      put empty into field "hauptm"
      put empty into field "schlagmm"
      put empty into field "schlagm"
   end if
   
   
   
end hiliteChanged

My script in my stack:

Code: Select all

on preOpenStack
   if the environment is "mobile" then
      set the fullscreenmode of me to "exactFit"
      set the acceleratedrendering of me to true
   end if
end preOpenStack

# Werte zur richtigen Berechnung als Punktwerte
# da nur mit Punkt (english) korrekt berechnet wird
function ohne_komma tZahl
   replace "." with "" in tZahl
   replace "," with "." in tZahl
   return tZahl
end ohne_komma

function mit_komma tZahl
   replace "." with "," in tZahl
   return tZahl
end mit_komma


My sript at the button berechnen:

Code: Select all

local zwischenrechnung,kapmm,hauptmm,hauptkvadrat,kapkvadrat,schlagmm,schlagkvadrat

on preOpenStack
   if the environment is "mobile" then
      set the fullscreenmode of me to "exactFit"
      set the acceleratedrendering of me to true
   end if
end preOpenStack

on mouseDown
   put field "kapmm" into kapmm
   put ohne_komma(kapmm)^2 into kapkvadrat
   put field "hauptmm" into hauptmm
   put ohne_komma(hauptmm)^2 into hauptkvadrat
   put kapkvadrat / hauptkvadrat into faktor
   put faktor * field "kapm" into zwischenrechnung
   put mit_komma(round(zwischenrechnung,2)) into field "hauptm"
end mouseDown

on mouseUp
   put field "schlagmm" into schlagmm
   put field "schlagm" into schlagm
   put ohne_komma(schlagmm)^2 into schlagkvadrat
   put hauptkvadrat / schlagkvadrat into faktor2
   put (schlagm-zwischenrechnung)*faktor2 into fuellschnurm
   put "Die benötigte Füllschnurlänge in Meter beträgt : " & mit_komma(round(fuellschnurm*-1,2)) into field antwort
   put "Auf die Rolle passen in Meter insgesamt : "& the value of field "hauptm" into line 2 of field antwort
end mouseUp


Thats all i have for now in my app.

Thank's Klaus for helping me out :)

Klaus
Posts: 12204
Joined: Sat Apr 08, 2006 8:41 am
Location: Germany
Contact:

Re: How to save data on android from different fields into a text file with different data?

Post by Klaus » Wed Sep 25, 2019 8:52 pm

"ohne_komma", "mit_komma" déjà vue! :D

Hm, scripts are OK, but do you see the dialog when trying to save?

Code: Select all

...
put tData into url("file:" & tFile)
if the result <> EMPTY then
   answer "Problem:" && the result
end if
...
This is the only point where it could go wrong.
And how did you check that the file is NOT getting written?
I would LC take a look and add this line right after writing the file:

Code: Select all

...
put tData into url("file:" & tFile)
if the result <> EMPTY then
   answer "Problem:" && the result
end if
answer files(specialfolderpath("documents"))
...
That should display "Testdatei" and all files in your docs folder.

UrosDobricic
Posts: 23
Joined: Wed Sep 25, 2019 6:33 pm

Re: How to save data on android from different fields into a text file with different data?

Post by UrosDobricic » Wed Sep 25, 2019 9:02 pm

I added this as you can see in my code above.

At my PC it opens a dialog box and says "Can't open file"

I added also this

Code: Select all

answer files(specialfolderpath("documents"))
When i click now on speichern at my phone it doesn't open anything.

Maybe, if it is ok for you, i can send you my livecode file at your email, so you can check everything?


I looked into "Interner Speicher" and then in the data folder at my phone.
There are no documents stored.

AxWald
Posts: 486
Joined: Thu Mar 06, 2014 2:57 pm

Re: How to save data on android from different fields into a text file with different data?

Post by AxWald » Thu Sep 26, 2019 8:44 am

Hi,
"answer files" is a command, maybe this is mixing up the call?
You might try:

Code: Select all

   put tData into url("file:" & tFile)
   put the result into tResult
   put files(specialfolderpath("documents")) into tTheFiles
   answer "Result:" && tResult & CR & tTheFiles	
I'd try it in the oldfashioned way:

Code: Select all

   --  we assume:
   --  "myFileName" is the filename, "myData" is the content of the file 
   put the defaultFolder into myOldDF
   set the defaultfolder to specialfolderPath("documents") & "/"
   put myData into URL ("file:" & myFileName)
   put the result into myResult
   --  now we display what happened:
   put "FilePath: " & the defaultfolder & CR & \
         "FileName: " & myFileName & CR & \
         "Result: " & myResult & CR & \
         "Files: ==========" & CR & the files & CR & \
         "Folders: ==========" & CR & the folders & CR & CR & "DefaultFolder is resetted!" into myMsg
   set the defaultFolder to myOldDF
   answer myMsg
I'm using the detour of "the defaultFolder" to be compatible with older versions of LC, and because I'm used to it :)
(and because I copied most of this from a working stack ...)

Have fun!
Livecode programming until the cat hits the fan ...

Klaus
Posts: 12204
Joined: Sat Apr 08, 2006 8:41 am
Location: Germany
Contact:

Re: How to save data on android from different fields into a text file with different data?

Post by Klaus » Thu Sep 26, 2019 10:29 am

FYI, it actually worked, but since the file was not easy to spot, if at all, Uros thought it didn't.

And yes, the answer files(x) was my fault. I see that two function overlap here:
answer files
and
files(the folder)
So I splitted it and we found the file is present:

Code: Select all

...
put files(specialfolderpath("documents")) into tFiles
answer tFiles
...

UrosDobricic
Posts: 23
Joined: Wed Sep 25, 2019 6:33 pm

Re: How to save data on android from different fields into a text file with different data?

Post by UrosDobricic » Thu Sep 26, 2019 1:25 pm

Hi Klaus, Hi AxWald,

it actually worked. The phone just did not display anything. After adding the code above from Klaus, it showed me the files.

I also wrote the read skript, which is working fine.

Now, my second question is, can i write directly to the phone like a .txt file out of the sandbox for example in the real Documents folder of Android?

The files are now sandboxed, and as i saw, this is the way the app works.



Something like this for Windows:

0x001a: The user application data folder (e.g. "C:/Documents and settings/Fred/Application Data")
0x0023: The "all users" application data folder (e.g. "C:/Documents and settings/all users/Application Data")
0x000d: The "My Music" folder
0x000e: The "My Videos" folder
0x0027: The "My Pictures" folder
0x000a: The recycle bin

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