Android :: How To Write To File ?

Apr 4, 2009

I would like to know how to write to file. I have tried using OutPutStream out = new FileOutPutStream(fileName); out.write(byte [], 0, length);This way always returns Parent directory or File is not writable.I have also used openFileOutPut(fileName, MODE_PRIVATE) method but this method works properly if it is called from the same class which has extended Activity and I am writing to the file in different class and that too in different thread.I have tried to get the Application Context through getApplciationContext and call openFileOutPut method but still theres something wrong that I am doing.So please can someone suggest me a proper way to write to a file.

Android :: How to write to File ?


Android :: Write To Xml File

Nov 8, 2010

in my application I have strings.xml file under values folder. strings.xml file contain array. Now I want to add element to that array at runtime. How to do that?

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Android :: Write An XML File To A Url?

Nov 21, 2010

I am trying to write an XML file to a url e.g. http://myIPAddress/myFolder/myFile.xml
I am using an Apache2 server for my tests on Ubuntu 10.10

Output line example (ignore apostrophe):
<'myEntity id="1" name="me" />

Also, i want to able to reopen the connection anytime and add lines to the end of the file.

I'd post my attempt here for correction but it's a sad one.
I am trying OutputStreamWriter with URLConnection, please correct me if i should be using a different approach.

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Android :: Sd Card File Write

Mar 17, 2010

I'm trying to write a file from an Http post reply to a file on the sdcard. Everything works fine until the byte array of data is retrieved. I've tried setting WRITE_EXTERNAL_STORAGE permission in the manifest and tried many different combinations of tutorials I found on the net. How my app writes file is by using a thread. Specifically, a thread is invoked from another thread when a file has to be written, so giving an activity object didn't work even though I tried it. The app has come a long way and I cannot change how the app is currently written. CODE:..................

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Android :: Trying To Write To File And Failing

Apr 30, 2010

im just trying to save some text to a file on android and while it works fine on the emulator "dont crash", when i try it on my phone it crashes, what am i doing wrong?i do know it crashes on " File root = Environment.getExternalStorageDirectory(); " i just dont know why. showMes() is just a function to make toast.

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Android :: Write XML Document To File

Sep 26, 2010

This should be trivial, but for whatever reason I can't find any easy way to do this. Coming from C# where this is a 1 line call, I don't understand why Java makes this so complicated, and on top of that android leaves even that out of its libraries. Anyway all I want to do is write an


that I have populated to a xml file. It should be as easy as opening a stream and writing document.toString(). But that doesn't work. My hope is I'm just missing something.

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Android :: How To Write File With Directory?

Apr 17, 2009

I wrote a file to the sdcard, but it failed as follow:String sdcardFIle = "/sdcard/xxx.txt" FileOutputStream fos = openFileOutput (sdcardFile, Context. MODE_ WORLD_ WRITABLE ) ; openFileOutput failed, because fIle "/sdcard/xxx.txt" contains a path seperator. It is so strange. Is there another way to handle the situation?

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Android :: Write File In Sub-directory

Mar 31, 2010

I'm trying to save a file in a subdirectory in Android 1.5.I get a exception saying I can't have directory separator in a file name ("/"). I'm missing something of working with files in Android..I thought I could use the standard Java classes but they don't seem to work.I searched the Android documentation but I couldn't fine example and google is not helping me too.I'm asking the wrong question (to google).

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Android :: Can't Write File Into SDCard

May 27, 2010

i'm having this issue of not being able write text file into the SDCard. I'm running the program through eclipse on a HTC magic version 2.1. i had the USB cable unplugged before i run the program. It says that the parent directory of file does not exist: data2/ abc.text

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Android :: How Do We Write File To SD Card

Jul 3, 2010

Today, i tried to read and write file on the android. but it seems that file write mode is only provided for SD card? most of article is asked about SD card written. Is there no way to save data internal side?So when i install the application to real device. then its application installed in SD card or internal space? because we have make it log file from our application for everytime while application run.So, how do we write the file to SD card and specified the absolute path where we saved? to load this file.

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Android :: Write File To SD Card

Dec 14, 2009

I'm trying to create a file on the sd card.but that throws a FileNotFoundException. Isn't OutputStream supposed to create the file, if not found on disk? I'm looking to write image data there.This is on a 1.6 emulator. I have an SD card installed, I'm looking at the sdcard folder through DDMS, so it's there.

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Android :: How To Write Bitmap Out To XML File

Jan 21, 2010

Might sound crazy, but it's what I need to do. I want to take a Bitmap object and use the XMLPullParser/XmlSerializer to write this to a flat file. Obviously I will need to read the XML tag back into a Bitmap object.So somehow I have to turn my Bitmap into a String and then turn that String back into a Bitmap. I will do some searches on Base64 to see if I get any good examples.

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Android : Trying To Write A File Using OpenFileOutput

Jul 6, 2010

M trying to write a file using openFileOutput, using the following snippet: I have to use this file, myfilename.text, later in my native code. To reference it I must know it's path. Anyone knows where does openFileOutput create the file and if it can be opened in my native code using the path, as in would there be any permission issues. Code...

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Android :: Getting Permission Denied When Trying To Write To A File

Jul 30, 2010

I am trying to take a dump of encoded data stream to a file. I had added the code to make the file dump in pvmf_omx_enc_node.cpp file, in the Fillbufferdoneprocessing () function. But i am getting the error 'permission denied' for fopen("/sdcard/enc_bitstream.bin,"wb+""); what i need to do to enable the permission to write to sdcard

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Android :: Droid Can't Write To A Text File?

Jul 24, 2010

My program contains a file with the name "size.text", which contains just a word "15". If a user choose a value from a spinner,say 17, then the chosen value should be stored in the file and replace "15". I have added the permission to the program <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission> But somehow i can not make the chosen value be written to the file. Here is my code...

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Android :: Way To Write .jpg/.png File To Gallery In Droid?

Jun 4, 2009

I've developed an Android App. that takes a picture and save it on gallery. The problem is that I don't know how to write a Bitmap/byte[] data which I get from taking pic. to the gallery in .jpg/.png format.

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Android :: How To Create TextView Without Write XML File?

Aug 28, 2010

As a newbie, I have been reading posts in learning how to do different functions.Using the Hello World example, I added a textview object to this application but the results come back as false on the screen.

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Android :: Read And Write File At Same Time?

Oct 6, 2010

In my application, I use MediaPlayer to record audio to a file.Can I read the file at the same time?

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Android :: Write / Read Log Data Into File

Mar 13, 2010

how to read/write log data into a text file in android that file should be res folder.

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Android :: Way To Write ContentProvider For Content Not Stored In File Nor DB?

Jan 7, 2010

I'm writing a ContentProvider that will provide content that is not stored in a file or database.I understand hat I have to overwrite openAssetFile() method.My problem is that I don't know how to create AssetFileDescriptor from data in memory (byte array or stream).Can anybody please point me to the right direction?I was digging in Android source where they use MemoryFile but I can't obtain ParcelFileDescriptor from MemoryFile.

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Android :: How To Create Text File And Read And Write From It?

Feb 24, 2010

I am very new to android and i have wrote an application that reads the Cell ID information , now i want to create a text file and store the information inside , i have googled this issue but i couldn't find a solution that really worked.

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Android :: How To Write ContentProvider For Content Not Stored In File Nor DB?

Aug 12, 2010

I need to write a ContentProvider to provide a dynamically generated audio stream to be playable by MediaPlayer. That is MediaPlayer will use ContentResolver.openInputStream() to play it. I have read a lot of discussions about this problem but no one had a solution yet. The most recent one was in January 2010:

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Android :: How To Create/write File In The Root Of The Device

Jan 17, 2010

I found out that you can use something like this to create a file:


When running the above code I get an IllegalArgumentException stating:


And Im guessing the "/" is not appreciated. I wanted the "/" since I need to write the file to the root directory of the device, as stated in the API in trying to follow:


Question is: how do I place a file in the root-directory? I have been looking around for an answer, but havent found one yet.

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Android : Read / Write To A Local XML File In Droid?

Nov 3, 2010

I am new to Android and relatively new to Java so please bear with me. I have an XML file stored in the res/xml that I am trying to write to. I know how to read it using XmlResourceParser, but I have not been able to find a way to write to that file locally. Could someone point me in the right direction please.

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Android :: ARM Directly Read / Write File On Sd Card I/O Without Cache

Nov 16, 2010

I need to directly read/write a file on sd card without cache. I can use "posix_fadvise" to achieve the purpose on Ubuntu I try NDK to make the function call, but it seems disabled on Android How can I do?

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Android :: Write / Read Access To SD Card In Manifest File

Mar 1, 2010

Is there a right associated with write/read access to the sd card that needs to be set in the manifest.xml file? I'm currently trying to write to the sd card using a standard FileOutputStream here:

FileOutputStream out = new FileOutputStream("/ sdcard/images/"+imageName);
bmp.compress(Bitmap.CompressFormat.JPEG, 90, out);

But it doesn't seem to be working. It just says the location isn't found, which can happen if there are no permissions to read/write to the location.

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Android :: Write Data To Existing Xml File Using Code In Droid?

Aug 23, 2010

I want to add new nodes to the exiting xml file in android to save imageurl so plz help to find a solution to add new nodes to existing xml file, so that i can use the xml data later..

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Android : Write To A File Saved In Local Folder In Droid?

Oct 27, 2010

I am having a file in the folder res/raw/a.xml.
I want to write some data to this file?
How it can be done in Android?
How can we access a file stored in local directory in order to write data to that file.
can anyone help me in sorting out this issue ?

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Android :: Unable To Write Text File To Sdcard On Physical G1 Device

Jul 12, 2009

I need to write a fairly simple .csv file to the device's sdcard (so it can then be emailed via Intent). The below code does not write the file.


More code here:

I flush and close out_stream. I can even seem to be able to read from the file on the device (printing above output, using fileinputstream, to an edittext.

How can I get to this file on the sdcard?

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How To Program / Write Code On Webview In Android For Loading HTML File

May 8, 2012

how to program/write code on a "webview" in Android for loading a html file?

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