FileReader and result does not work

[zio budda]

Hi all. 

I need to read some files on my phonegap's app (for the moment iOS), so I use File API. 

I have tested the demo on http://docs.phonegap.com/en/1.2.0/phonegap_file_file.md.html#FileReader but without success:  reader.result is always "null". But if I modify 

function readAsText(file) {

        var reader = new FileReader();

        reader.onloadend = function(evt) {

            console.log("Read as text");

            console.log(evt.target.result);

        };

        reader.readAsText(file);

    }

in:

function readAsText(file) {

        var result;    /* ______________________HERE ___*/

        var reader = new FileReader();

        reader.onloadend = function(evt) {

            console.log("Read as text");

            console.log(evt.target.result);

            result = evt.target.result;  /* ______________________HERE ___*/

            );

        };

        reader.readAsText(file);

        /*for (var k in reader) {

        console.log(k+" = "+reader[k]);

        }

        */

        console.log(result); /* ______________________HERE ___*/

    }

I can see the file's content (it's stored in "result" variable).

Why this ? 

And: in the iOS Emulator my file path url is /Users/ziobudda/Library/Application Support/iPhone Simulator/4.3/Applications/B20807F1-D375-409B-BAF3-26A55D3E7F61/Documents/

But when I will move onto device ? 

M.

--
Michel 'ZioBudda' Morelli                       mic...@ziobudda.net
Consulenza sistemistica in ambito OpenSource.
Sviluppo applicazioni web dinamiche (LAMP+Ajax)
Telefono: +39-3939890025 --  Fax: +39-0291390660

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[Becka11y]

Sorry, I don't have any ideas why the code would work different. I
have successfully read the contents of a file and output the result
via a console.log statement in the onloadend or onload functions.
Note that FileReader.readAsText(file) expects a File object or a full
file path as the input parameter. How are you creating the file that
you are reading?

I'm not sure I understand your second question? On the device the
file path will be /var/mobile/Applications/<app id>/Documents for the
LocalFileSystem.PERSISTENT FileEnty.

-becky

> */Users/ziobudda/Library/Application
> Support/iPhone
> Simulator/4.3/Applications/B20807F1-D375-409B-BAF3-26A55D3E7F61/Documents/*

[ziobudda@gmail]

Il giorno 07/dic/2011, alle ore 21:26, Becka11y ha scritto:

Sorry, I don't have any ideas why the code would work different.   I
have successfully read the contents of a file and output the result
via a console.log statement in the onloadend or onload functions.
Note that FileReader.readAsText(file) expects a File object or a full
file path as the input parameter.  How are you creating the file that
you are reading?

Hi, can you try to see if your reader.result contains file content, plz. If I don't wrong understand the API doc, reader.result contain the file's content.

And again: how can I use file content's if in this example the only things is write it to the console ? 

And again: how can I specify another file name via parameter ? 

I'm not sure I understand your second question?   On the device the
file path will be /var/mobile/Applications/<app id>/Documents  for the
LocalFileSystem.PERSISTENT FileEnty.

Thanks. But, how can I read a file in my www directory ?

M.

--
Michel 'ZioBudda' Morelli                       mic...@ziobuddalabs.it
Sviluppo applicazioni CMS DRUPAL e web dinamiche (LAMP+Ajax)
0200619074 - 3939890025 (mobile)--  Fax: +39-0291390660
http://www.ziobuddalabs.it                      Skype: zio_budda

[Ken OKABE]

http://stackoverflow.com/questions/8003976/phonegap-1-1-0-and-ios-5-0-filewriter-does-not-respond

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