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.

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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

org.w3c.dom.Document

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: http://groups.google.com/group/android-developers/browse_thread/threa.

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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:

CODE:............

When running the above code I get an IllegalArgumentException stating:

CODE:......

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:


CODE:.........

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.

CODE:...........

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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Android :: Write Contents Of Custom View To Large Image File On SD Card

Mar 12, 2010

I have a class that extends View. I override the onDraw method and allow the user to draw on the screen. I am at the point where I want to save this view as an image. I Can use buildDrawingCache and getDrawingCache to create a bitmap that I can write to the SD card. However, the image is not good quality at a large size, it has jagged edges. Since I have a View and I use Paths I can transform all by drawing to a bigger size. I just don't know how to make the Canvas bigger so when I call getDrawingCache it doesn't crop all the paths I am just transformed. What is happening is I transform all my paths but when I write the Bitmap to file I am only getting the "viewport" of the actual screen size. I want something much bigger.

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Android :: Null Pointer Exception Occurs When Trying To Create File And Write Data

Oct 26, 2010

I am trying to create a file ,if it doesnot exist and tried to write some data to it. The same program I did in java, it was running fine.But when I try to do the same thing in Android I am getting NullPointerException at the place where I am trying to write data to file. And also, I did not find any new file in the current directory .

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Android :: Write Android App Which Loads JPEG File

Nov 20, 2010

I have a JPEG sketch of my apartment. i wish to write android app which loads this JPEG file and behaves as a map to the user so that user can track is movement. I am really confused weather JPEG file can be used as a map, if it can used as a map then please let me know how i can mark the movement of the user on that map.

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HTC EVO 4G :: PC Can't Write To SD Card

Sep 18, 2010

When I plug my Evo into my PC, I can browse and view all the files on the SD Card, however, when I try and write something to the card windows gives me an error. I have tried creating a directory on the card using the Astro App and I can create a directory from the phone.

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Android :: Cannot Write To SD Card

Apr 12, 2010

Sorry for the ambiguous title but I'm doing the following to write a simple string to a file:

try {
File root = Environment.getExternalStorageDirectory();
if (root.canWrite()){
System.out.println("Can write.");
File def_file = new File(root, "default.txt");
FileWriter fw = new FileWriter(def_file);
BufferedWriter out = new BufferedWriter(fw);
String defbuf = "default";
out.write(defbuf);
out.flush();
out.close();
}
else
System.out.println("Can't write.");
}catch (IOException e) {
e.printStackTrace();
}

But root.canWrite() seems to be returning false everytime. I am not running this off of an emulator, I have my android Eris plugged into my computer via USB and running the app off of my phone via Eclipse. Is there a way of giving my app permission so this doesn't happen? Also, this code seems to be create the file default.txt but what if it already exists, will it ignore the creation and just open it to write or do I have to catch something like FileAlreadyExists(if such an exception exists) which then just opens it and writes?

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Android :: How To Write App In C / C++ For Droid?

Jun 16, 2009

I'm trying to develop/port a game to Android, but it's in C, and Android supports Java, but I'm sure there must be a way to get a C app on there, anyone knows of a good tutorial on the subject?

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Android :: Way To Write Droid App In PHP?

Sep 12, 2009

Is there anyway to write android applications in PHP? This page clearly mentions that Android apps should be written in Java. Just wondering if there is another way. http://developer.android.com/guide/topics/fundamentals.html.

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Android :: How To Write MK To Include APK?

Jun 18, 2010

I'm writing a Android.mk to make a APK-A. and APK-A would use other classes defined in APK-B. I wonder that how should I wrote the Android.mk to include APK-B. Which tag should I use?

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Android : Way To Write PerformanceTestCases?

Apr 11, 2009

Does anyone have a simple example of a PerformanceTestCase<http://www.google.co.in/codesearch/p?hl=en#uX1GffpyOZk/core/java/andr...>I want to get some timing metrics for certain business logic functions in my ap. Until now I have been using the current milliseconds and logging functionality but if there is a better way to gather performance metrics I'd love to hear it. Do I have to implement the Intermediates interface or am I missing something?

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HTC Desire : How Can I Write On Screen?

Apr 25, 2010

Had my desire for a week and something has been bugging me which I cannot fix. I have changed wallpapers etc but its on every screen/page except when the phone is locked. I cannot find where to get rid of this, the guys in T mobile did not know either. Not the end of the world but when you watch vids etc you can see it behind everything!

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Android : How To Read/Write .CSV

Dec 15, 2009

I'll open with, I googled this thing like crazy, searched anddev and a few other boards (including this one) and can't quite find what I'm looking for.

The predicament : all CSV examples are in reference to contacts, and the file read/write posts (the ones that I need) make the assumption that I am not a beginner and most don't even post any code leaving me nothing to learn on.

The hopeful solution : a link to a solid example of simply how to write to a CSV with my own custom fields and values, and how to read a CSV and load said values.

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HTC Desire :: Can't Write While Phone Is In Landscape

Jul 6, 2010

I have a major problem with my Desire. When flip the phone sideways (to write messages), the writing doesn't appear when i hit the buttons. They appear when i flip the phone back, or when i send the message. But while writing in landscape, they don't appear. I have the stock rom. It's one week "old", so it haven't been "tempered" with (That's what my Hero is for)

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Android :: Write Comment On Bitmap

Nov 22, 2010

I have a bitmap displayed on ImageView now i want to give a facility to write comment typed by the user on that bitmap.i tried using Canvas canvas = new Canvas(srcBitmap); canvas.drawText("Hello", 100,100,null);but this is giving me following error java.lang.IllegalStateException: Immutable bitmap passed to Canvas constructor later on i want to save this whole image a bitmap.

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Android :: Application To Write SMS With PC Keyboard

Aug 5, 2009

I send a lot of sms messages everyday and I'd like to write them using my PC keyboard... then this text should be sent to my Htc Magic which sends it to a specified number. I used to do that with Nokia PC Suite... Is there any software.

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Android :: Permission To Write On SD Card

Oct 13, 2010

EDIT: Problem solved, FileOutputStream defined uncorrectly, change to: fos = new FileOutputStream( root + "/" + saveFileName );

I have a problem writing to the SD card, here is the code: (Sorry about the layout of the code, just copy pased it )

public class SaveAndReadManager {
private String result;
private String saveFileName = "eventlist_savefile";
public String writeToFile( ArrayList<Event> arrlEvents ){
FileOutputStream fos = null;
ObjectOutputStream out = null;...............................

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Android :: Permission To Write To The SD Card

Jan 23, 2010

I would like my app to archive the application DB to the SD card. In my code I check if the directory can Write(), and if not then throw an IOException. In this perticular instance, I am trying to copy the db file to the root directory on the SD card, but its throwing an IOException. How can I change the permission on a folder/file to be able to write to it

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