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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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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Sep 25, 2010
In android manifest file, there is a field specifies application version. if I can read that value programmically in my android code?
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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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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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Feb 17, 2010
How do I create a shared directory with read/write permissions to all applications installed on my phone and that is not on the sdcard?
I tried that :
File f = new File("/tmp");
f.mkdir();
but it is not working.
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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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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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Jul 18, 2010
There are a lot of different classes that can be used in various ways to read/write to files in Android. For example, you can make use of java.nio.ByteBuffer, FileOutputStream and BufferedOutputStream. Are there any general guidelines for what to use to read/write quickly to the SD card? For example, BufferedOutputStream seems as if it should make things faster but I'm unsure the buffer size should be set for. Specifically, I want to read/write byte arrays that are ~1Mb in size as quickly as I can.
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Oct 23, 2012
I did a backup using Titanium Backup and Go Backup and after wiping my Motorola Defy, tried to restore apps, contacts etc. The problems I encountered were:
1) Go Backup can't recognize backup directory on SD card for some reason.
2) Can't move apps to SD. An error occurs: "Move Application: Failed to move application. There is not enough storage left." Needless to say, I have more than enough storage.
This is was I encountered by far, although I believe these are just a small part of the symptoms for a single problem.
Maybe its because there are no permissions, or moving apps is impossible because of an existing app files on the SD card.
What is the actual cause for this? Or is there a tool to fix the permissions on the Defy?
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Apr 26, 2010
My new HTC desire is unable to read or write to my 8GB SD card which was previously inside my HTC HD touch.
Why is this? I've swapped the SD cards around - i.e. the 4 GB SD card which it came shipped with is now inside my HTC HD touch It doesnt have a problem reading or writingto the 4 GB SD card that it came shipped with. I would prefer not to have to format the card
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Feb 18, 2012
I developed a cramfs rom for the np7 after user dochoppy found root for the nextbook premium 7 tablet, but he then converted to ext3 which because its packed with features will be more popular. So I am trying to edit his ext3 rom in Ubuntu 11.10 and here is what I do:
1. Copy and paste system.img to desktop
2. Create a folder called system on desktop
3. In command prompt:
cd ~/Desktop
Sudo mount -t ext3 -o loop system.img system
(Asks for pw)
4. Doc said something about only being able to edit as root, so after some Googling I find out how to create a program that grants root.
5. (Open "run as" program) then I type "nautilus /home"
(Asks for pw)
6. Navigate to mounted system and I have read/write privileges (but only in this window)
7. View the system mount properties, and it says I have 14.2 mb free space on device
8. Delete files throughout the system folder to make room (but when I refresh properties, free space increase doesn't show)
9. Try to add my own files after deleting some others, ans rather than using the increased space, it just fills the fourteen megs before telling me "device is out of memory "
why is the system not physically making the proper system increase and decreases.
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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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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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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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Jun 10, 2010
How do I access my sd card from my evo to see what is saved on there? Or must I connect it to the computer to view what's on the sd card?
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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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Nov 21, 2010
I am New To Android, My requirement is to display Total SDcard files in Listview , in that i want to read only TextFiles.
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Jul 2, 2010
Ok just got my EVO yesterday. This is not only my first android phone, but my first smart phone as well. I'm fairly savvy when it comes to computers and techy stuff, but I do have what sounds like a ridiculous question. I bluetoothed some files (songs and pictures) from my old phone to my EVO. It acknowledged getting them and indeed I was able to play them from the notification area after receiving them. However, now I cannot find anyplace to 'browse' the phone folders or the SD card folders so I can find and utilize these files. How do you access the SD card or the file system?
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Feb 4, 2010
Can I access the values defined in a java manifest from code?
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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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Mar 12, 2009
Is it possible to have two application tags (<application>)in the same AndroidManifest.xml file ?If yes - is there anything special that needs to be done, I am trying it, the syntax is accepted by the XML parser but when I install my second application is not available.
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Sep 26, 2010
I would like to start my own SMS editor when user selects "Send message" from contacts application. How do I define intent in manifest file to allow passing contact details to the editor?
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Sep 23, 2009
I am new for android development. I am trying read and write contacts to android addressbook.
I tried following line of code for write name into android.
CODE:.............
But i am getting "The application has stopped unexpectedly. Please try again" message.
How can i access contacts of android ?
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Jul 9, 2010
When i try that code...
when run program both can't write /read occure
I have set permission to access sdcard what is the problem?
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Sep 14, 2010
How to read and write strings in text file in android which is kept in raw folder and also how to clear contents of that file in android?
I have done this way and my "temp.txt" file is in /raw folder. But i am not getting any output in file. Also I am not getting any error for this...
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Mar 13, 2010
How to write/read log data into txt file in res folder.
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Apr 29, 2010
I cannot read and write extended characters (French accented characters, for example) to a text file using the standard InputStreamReader methods shown in the Android API examples. When I read back the file using: the string read is truncated at the extended characters instead of at the end-of-line. The second half of the string then comes on the next line. I'm assuming that I need to persist my data as UTF-8 but I cannot find any examples of that, and I'm new to Java. Can anyone provide me with an example or a link to relevant documentation? Code...
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Aug 3, 2012
removing the android manifest file while performing android programming. Someone told me that the manifest file is vital for the layout and setting of out program. they told me this is a seperate file but is still a part of the java project (.jar/ap/apk file). They told me i can set everything using ONLY the java code itself. I really hate doing XML with java. how to remove or unlink this XML/HTML file from the Android SDK?
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May 3, 2010
I have an application that can read and write txt files to the phones sdcard. By using this code for reading files:
@Override protected void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); mFileNameOpen = files.get(position);
String st = null; mVector.clear();
notepad.mNewEmpty = false; try { File f = new File(Environment.getExternalStorageDirectory()+"/ notepad/"+mFileNameOpen); FileInputStream fileIS = new FileInputStream(f);
BufferedReader in = new BufferedReader(new InputStreamReader(fileIS));
do { st = in.readLine();
mVector.add(st);
}while(st!=null); in.close(); ...
} catch (FileNotFoundException e) { e.printStackTrace();
} catch (IOException e) e.printStackTrace();
and this to write them:
try { File root = Environment.getExternalStorageDirectory();
File fileCheck = new File(root, "/notepad/" + fileNameSave + saveExtension);
boolean exists = fileCheck.exists();
if (!exists) { if (root.canWrite()) { File textFile = new File(root, "/notepad/" + fileNameSave + saveExtension);
FileWriter textWriter = new FileWriter(textFile);
BufferedWriter out = new BufferedWriter(textWriter);
out.write(SAVEAS); out.close(); written = true;
} else { written = false; else { written = true; showMaybe = 1; showDialog(DIALOG_SAVE_EXISTS);
catch (IOException e) {Log.v(getString(R.string.app_name), e.getMessage());
This has been working fine on my Tattoo and all the emulators I've tried this on. But it does not seem to be working on moto droid. Is there something different to consider with moto droid? Or have I missed something in the manifest maybe?
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