Save variables after closing the app

[SparkOut]

That lesson, like a lot more, needs to be updated to make sense and to reflect the value of the "new" specialfolderpath("resources")!

urgh... I thought it HAD been updated, but didn't study it.
There's also this lesson which is nominally for mobile but applies some of the required techniques
http://lessons.livecode.com/m/4069/l/15 ... ile-device

[Klaus]

Ooops, might also fail on iOS because -> specialFolderPath("Documents")
needs to be -> set the defaultFolder to specialFolderPath("documents")

Note the small caps d of documents!

[SparkOut]

ugh, Android too actually

[Klaus]

ugh, Android too actually

Ouch!

Will inform the mothership tomorrow!

[richmond62]

"Unfortunately" while most things (c.f. numToChar versus numToCodePoint) remain the same in LiveCode
they don't seem to in the world of operating systems and file systems.

Therefore any lessons offered online that interact with anything outwith LiveCode itself need to be
constantly watched, tested against new versions of systems, and updated where necessary.

[AGC studios]

hi, this code isnt working, any ideas? (Android)

Code: Select all

on openStack
   set the defaultFolder to specialFolderPath("documents")
   put URL ("file:test.txt") into tSec
   put tSec into field "fsField"
end openStack

on shutdown
   set the defaultFolder to specialFolderPath("documents")
   put "second" into URL ("file:test.txt")
   pass shutdown
end shutdown

tSec is empty so I would have guessed test.txt is empty or not even created...

i also tried using a caps "D" in documents

tnx

[Klaus]

You really should start with some error checking!

1. Check if file is really present:

Code: Select all

on openStack
   put specialFolderPath("documents") & "/test.txt" into tFile
   IF THERE IS A FILE TFILE then
     put URL ("file:" & tFile") into tSec
  ELSE
     put "No file yet!" into tSec
 end if
 put tSec into field "fsField"
end openStack

2. Check if writing was successfull:

Code: Select all

on shutdown
   put specialFolderPath("documents") & "/test.txt" into tFile
   put "second" into URL ("file:" & tFile)
   if the result <> EMPTY then
     answer "Error writing file!" & CR & the result & CR & syserror()
  end if
  pass shutdown
end shutdown

Maybe the answer dialog will show what might have gone wrong.

P.S.
As you can see I am not a friend of "messin' with the defaultfolder".
If I can have an absolute pathname, I will use it!

[mrcoollion]

Maybe this is what you can use?
See the Demo Stack I attached at the following topic.
viewtopic.php?f=12&t=33338
viewtopic.php?f=12&t=33338#p185397


Regards,

Paul

[FourthWorld]

hi, this code isnt working, any ideas? (Android)

"Isn't working" is hard to fix.

With any file I/O it's very useful to check the result immediately after the I/O statement, and if not empty then query sysError() to find out the specific error code the OS is passing to LC about why it failed.

[AGC studios]

Thanks, the problem was with the shutdown handler, so I changed it.