I have an app that is working, all is cool. Now, it has textview object, and I would like to save that content to *.txt file, in a "simple" way (not for me obviously). I have a simple button, and by clicking it I would like to save *.txt file to SD card, (root of the card is ok).
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I am trying to download a file from the net and write it to the SD card. I have the WRITE_EXTERNAL_STORAGE permission enabled.
The code fails here:
CODE:..................
I am trying to write the file and it doesn't exists from before.
I try to write to a Csv file via:mFileWriter = new FileWriter("/sdcard/program/file");mCsvWriter = new CSVWriter(mFileWriter);At the moment it throws an exception that the file doesn't exist.It's true that the file doesn't exist. What's the easiest way to create the file?
View 1 Replies View RelatedI'm trying to read from a file while it still opened for witing.
View 2 Replies View RelatedMy application stores data locally in the native SQLite db, and I want to allow users to export this data by emailing themself a .csv file. In order to do this I'm generating the .csv from the database and writing it to the SD card, then attaching it to an email:String Builder csv = generateFile();writeFile(csv.toString(),"file.csv");Intent email = new Intent(android.content.Intent.ACTION_SEND);email.setType ("application /octet -stream"); email.putExtra(android.content.Intent. EXTRA_ STREAM, Uri.parse ("file://sdcard/file.csv")); Which all works great. What I'm wondering, though, is if it is possible to skip the step of writing to SD first, and directly attach the data.
View 1 Replies View RelatedI tried to create byte array blocks from file whil the process was still using the file for writing. Actually I am storing video into file and I would like to create chunks from the same file while recording. The following method was supposed to read blocks of bytes from file:
private byte[] getBytesFromFile(File file) throws IOException{
InputStream is = new FileInputStream(file);
long length = file.length(); int numRead = 0;
byte[] bytes = new byte[(int)length - mReadOffset];
numRead = is.read(bytes, mReadOffset, bytes.length - mReadOffset);
if(numRead != (bytes.length - mReadOffset)){
throw new IOException("Could not completely read file " + file.getName());
} mReadOffset += numRead; is.close(); return bytes;
}
But the problem is that all array elements are set to 0 and I guess it is because the writing process locks the file. Any other way to create file chunks while writing into file.
Can any one give the code to read and write to a file in the Android assets folder.
View 3 Replies View Relatedso I'm trying to write in "Update-Binary" in a Zip File .
In The Zip The Update-Binary is Located : META-INF < COM < GOOGLE < ANDROID < (Here)
I'm trying to write and edit some things into the file , which I have tried with NotePad++ and Notepad and WordPad . None will work ... When I go to Flash I have a Error right away since The Update binary is the system to start the Flash it won't work .
When implementing download function it work but during file saving to sdcard i get the following Default buffer size used in BufferedInputStream constructor. It would be better to be explicit if an 8k buffer is required.Also IO Exception occure
W(14495:0x389f) java.io.FileNotFoundException: /sdcard
W(14495:0x389f) at org.apache.harmony.luni.platform.OSFileSystem.open(OSFileSystem.java:244)
W(14495:0x389f) at java.io.FileOutputStream.(FileOutputStream.java:97)
W(14495:0x389f) at java.io.FileOutputStream.(FileOutputStream.java:168)
W(14495:0x389f) at java.io.FileOutputStream.(FileOutputStream.java:147)
Is there any way of accessing the internal SD card on Android devices that have internal flash, internal SD and external SD cards?
View 1 Replies View RelatedAre any <uses-permission> clauses needed in the manifest for: 1. Writing to a file using the Activity.openFileOutput() mechanism; 2. Writing to the SD card using FileOutputStreams; 3. Sending email using the Activity.startActivity( Intent.create Chooser (...)) mechanism
http://developer.android.com/guide/topics/security/security.html and didn't see anything that seemed relevant. My app works on my ADP1 without any <uses-permission> clauses when installed with "adb install xyz.apk" but I was worried that it may have problems on a "real" consumer device.
I'm writing a simple budget app for myself, and I'm having trouble figuring out how to write to internal storage. I don't seem to be writing to the file properly and I can't find any more in depth examples than the Data Storage article on developer.android.com. Basically, I'm trying to write a test float to the MyBalance file, then read it into balance. In my actual code I use try/catch statements around the file in/out operations but I skipped them to make the code more readable.
float test = 55; float balance; byte[] buffer = null;
FileOutputStream fos = openFileOutput( "MyBalance", Context.MODE_PRIVATE );
fos.write(Float.floatToRawIntBits(balance));
fis.read(buffer); //null pointer
ByteBuffer b = ByteBuffer.wrap(buffer);
balance=b.getFloat();
That's the gist of it, anyone see what I'm doing wrong? I went ahead and converted to/from String but I still don't think the file is being created. I have an if statement that reads from it if it exists in onResume() and it isn't being run. Lemme post some of my code. Here's how I'm writing the file, (setbal is an EditText and balanceview is a TextView):
balance = Float.valueOf(setbal.getText().toString());
balanceview.setText(setbal.getText());
balstring = String.valueOf(balance);
for (int i = 0; i < balstring.length(); ++i)
try { fos.write((byte)balstring.charAt(i));
} catch (IOException e) { e.printStackTrace();
}
I check if the file exists in onResume() like so:
File file = new File("data/data/com.v1nsai.mibudget/balance.txt");
Is that where an internal file for that context would be stored?
I am developing an application that read data from sensors and write those data to an XML file when you press a key. i have 2 activity one for button and another is an Activity who implements sensorEventListener. the problem is my main activity is button and couldn't get data from event listener activity. i think the listener activity is not active but when i create an intent and start activity with that intent the program stop working. the button is able to create XML file solely.so how could i read sensor data from sensors,and how to send them to XML file when the button got clicks.
View 1 Replies View RelatedI'm a beginner in Android and request any help on the following. I'm trying to use an SD Card loaded on to the Emulator and store files pro grammatically. The code snippet is as below public class Down loader { public Down loader(String path){ this.path=sanitize(path); Log.d("DEBUG","The File Path is " + path);}
View 11 Replies View RelatedI'm writing an podcast playing application. The application has pre- defined feeds but I want to cache the image of the feed for 30 days. However, on the initial creation of the podcast I am downloading the image, and trying to save it to the SD card using the code below:
CODE:............................
However, it keeps failing on the line k.createNewFile(); with the error: WARN/System.err(10727): java.io.IOException: Parent of file is not a directory: /sdcard/twitcast/1.jpg
I've checked and I have write permission and the SD card is mounted, and I have android.permission.MOUNT_UNMOUNT_FILESYSTEMS included in my manifest. why this keeps failing?
In my application I will be writing messages to a text file. When I am writing the messages I also want to include the time in it. How do i write in the current date and time? Must I use Calendar now = Calendar.getInstance()?
View 4 Replies View RelatedI wrote an app that downloads web sites and all their assets (images/stylesheets) to "disk" and therefore stores lots of small files on the SD card.
Sometimes it fails to delete large amounts of files and afterward the file system is r/o. To analyze that behavior I tried to do the removal of the files by hand and then go from there. But that already failed.
localhost:~ mkamp$ adb -d shell mount [.. some mounts ..] /dev/block/mmcblk0p1 /sdcard vfat rw,dirsync,nosuid,nodev,noexec,uid=1000,gid=1000,fmask=0711,dmask=0700,codepage=cp437,iocharset=iso8859-1,utf8 0 0 --> R/W
Last login: Wed Mar 18 19:41:49 on ttys005 localhost:~ mkamp$ adb -d shell rm /sdcard/newsrob/a* [.. minutes of silent deletes ..] rm failed for /sdcard/newsrob/a2aade03616c28b30_113.png, Read-only file system localhost:~ mkamp$
localhost:~ mkamp$ adb -d shell mount [.. some mounts ..] /dev/block/mmcblk0p1 /sdcard vfat ro,dirsync,nosuid,nodev,noexec,uid=1000,gid=1000,fmask=0711,dmask=0700,codepage=cp437,iocharset=iso8859-1,utf8 0 0 --> R/O now
The log contained nothing but the usual gc output and random WiFi status changed mumbo jumbo.
Anybody else seeing this behavior?
There were 6.500 files in that directory. Might that be the problem? I don't access the files with queries, I always have the exact name.
I'm Trying to Write Logs to Custom Log.txt File on Android File using this code of Mine but then this method creates file but contains nothing. Basically I want to read previous contents of the file and then append my data with the existing content. The Code is as follows :
public static void write(String str)
InputStream fileInputStream = null;
FileOutputStream fileOutpurStream = null;
try { FileInputStream = new FileInputStream(file);
fileOutpurStream = new FileOutputStream(file);
if(file.exists())
{int ch = 0;
int current = 0;
StringBuffer buffer = new StringBuffer();
while((ch = fileInputStream.read()) != -1)
{buffer.append((char) ch);
current++;
}byte data[]=new byte[(int)file.length()];
fileInputStream.read(data);
fileOutpurStream.write(data);
fileOutpurStream.write(str.getBytes(),0,str.getBytes().length);
fileOutpurStream.flush();
} else
{file.createNewFile();
fileOutpurStream.write(str.getBytes(),0,str.getBytes().length);
fileOutpurStream.flush();
}catch(Exception e)
{e.printStackTrace();
}finally
{try
{fileInputStream.close();
fileOutpurStream.flush();
fileOutpurStream.close();
fileOutpurStream = null;
fileInputStream = null;
}catch (IOException e)
{// TODO Auto-generated catch block
e.printStackTrace();}}
I am trying to play file which is stored in SDCARD in emulator. I have Linux O/S. So i need to provide command in run configuration. I am providing following parameter.
-sdcard /usr/android/sdcard/mysdcard.iso -audio oss [i]
The following is my code to play file.
try { mMediaPlayer.setDataSource("/sdcard/test_cbr.mp3"); mMediaPlayer.prepare(); // Giving error. mMediaPlayer.start(); }
How come this is the only file manager on the market (that I've found... I went through quite a few) that can open an HTML file from your SD card? I was a loyal user of Estrogen until I found that it couldn't.
View 2 Replies View RelatedI cant copy big compressed (.zip, .rar) to my sd card. The item successfully copied but end with corrupted file (crc). I tried to fix with some software on net. But the is no can fix instead showing no problem. HY5001
View 1 Replies View Related"Unable to save file to SD card due to insufficient file permissions."
This is the message I get when I try to take pictures. I have only taken 9 shots so far. There was no problem until yesterday when i tried to take the tenth. Did I do something to cause this? I am not that tech smart
Is there any way to get the file name of the SD Card used by the emulator (like SDCard1.iso).
View 2 Replies View RelatedThis is probably a really dumb/noob like question but what is the best method to have an .apk file that when installed drops a zip file onto the sd card, in a specific directory, from the assets or raw folder?
View 1 Replies View RelatedFirst time poster, new to Android. Having problems getting my small little brain to understand file's and file organization on this thing.First off I popped out the SD card that came with the phone and put in my 16Gig card I had in my Touch Pro2. Formated it and started trying to figure it out.First thing I notice, is that when I plug in the phone. It keeps looking for driver's Something about HTC sync? Don't tell me all the drivers and such were on the card that came with the phone? So first question What files do I need to get and were to get them? Second question
View 1 Replies View RelatedJust got my EVO a few days ago.Is there a way to view everything on your SD card, like a certain file folder? I see where some of the things i've downloaded went to the gallery, office program, and gallery, but I don't see how I can view these all in one place or edit/delete them.
View 3 Replies View RelatedHow to run one or more APK programs base on Emulator's SDcard?
View 6 Replies View RelatedI have just bought a new 32 GB SD card. Made a folder on my PC and copied the content of the original SD card to folder. New folder on PC says contents 950 mb. Original SD card in Desire is 2.6 GB used space. What have I missed. Is there a better way to transfer content of Old SD card to new. What is RAW format? (Format of old SD card in phone.)
View 8 Replies View RelatedI'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:..................
View 7 Replies View RelatedWhen you install an app to the SD card, what is the name of the folder or directory it goes to? I have Astro file manager and when I use it to look at all the folders on the SD card, I don't see any folder that remotely looks like it would be the one. I have opened up all folders that I don't know what's in them and I don't see the apps. Unless I'm missing something. Has anyone figured the name of the folder containing these SD card installed apps?
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