Trying to copy a PDF file (template) to a custom directory in the external storage (non-sd card).
public void copyPDFToExternal(String newFileName) throws IOException {
// Create directory folder if it doesnt exist.
File folder = new File(Environment.getExternalStorageDirectory() +
File.separator + "pdfFolder");
if (!folder.exists()){
folder.mkdir();
}
// Copy template
InputStream in = getResources().openRawResource(R.raw.pdf_template);
FileOutputStream out = new FileOutputStream(Environment.getExternalStorageDirectory() +
File.separator + "pdfFolder/"+newFileName+".pdf");
byte[] buff = new byte[1024];
int read = 0;
try {
while ((read = in.read(buff)) > 0 ) {
out.write(buff, 0, read);
}
} finally {
in.close();
out.close();
}
}
I have added the following to AndroidManifest.xml, not in the application tag.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Full error: http://pastebin.com/TBtbekiB
If you need me to post anything else let me know.
Where have I gone wrong?
Update: No longer crashes but now doesn't seem to do anything... the mkdirs returns true.
public void copyPDFToExternal(String newFileName) throws IOException {
File folder = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +
"/test/");
if (!folder.exists()){
if (!folder.mkdirs()){
eme.setText("Failed");
return;
};
}
InputStream in = getResources().openRawResource(R.raw.ohat);
FileOutputStream out = new FileOutputStream(folder.getAbsolutePath() +"/"+newFileName+".pdf");
byte[] buff = new byte[1024];
int read = 0;
try {
while ((read = in.read(buff)) > 0 ) {
out.write(buff, 0, read);
}
} finally {
in.close();
out.close();
}
}
I've also added a permission request, this is a little long so using pastebin.
http://pastebin.com/KgivWNuc
Edit 2:
So it seems it does work, just the directory cannot be see when the device is connected to a computer (in MTP mode). But I guess that's another issue.
if you are installing in device os version android M and more you need to take permission at runtime. Adding in manifest alone is not sufficient. Refer this for more details.
Can you specify which external storage you are using as you have said it is (non SD Card) because if you are using Environment.getExternalStorageDirectory() then it will give you the path of SD Card Storage, something like this /storage/emulated/0/ where 0 represents primary storage device.
Related
I've got a question that probably borders on opinion, but I've not any related questions or documentation that answers, so I feel like it's a fair one to ask.
I'm trying to build an android app which modifies music files, and what I'd like to do is have a shared folder so that the files and the results can be accessible and shared. I'd like it if it was among the other folders like Music, Downloads, Movies, etc, or even under Music since it's music related. However this seems like it's a security no no in Android, as after I've made something and put it in there I have to use an intent to access it again, where as I'd rather just be able to open the files and not have a permissions based fiasco. Maybe some type of symbolic link like in Linux that pointed to my apps internal folder could be used, but of this I'm still uncertain.
In any case, is there a way I should go about this? If so, are there some resources I could be pointed to?
Thank you in advance to anyone who takes this up!
Edit for CommonsWare:
I used the following to create the folder:
File mediaStorageDir = new File(Environment.getExternalStorageDirectory(), APP_NAME);
And this to copy files from elsewhere to there:
public void copyFileToHomeDirectory(Uri uri)
{
try
{
ContentResolver contentResolver = getApplicationContext().getContentResolver();
String fileName = queryName(contentResolver, uri);
//Get file extension
String fileType = fileName.substring(fileName.length() - 4, fileName.length());
if(fileType.equalsIgnoreCase(MP3_EXTENSION))
{
String path = Environment.getExternalStorageDirectory() + APP_FOLDER;
InputStream in = contentResolver.openInputStream(uri);
File outputFile = new File(path + File.separator + fileName);
outputFile.createNewFile();
OutputStream out = new FileOutputStream(outputFile);
//First we crack open the file to copy it's contents:
byte[] buffer = new byte[KB_SIZE];
int read;
while ((read = in.read(buffer)) != -1)
{
out.write(buffer, 0, read);
}
in.close();
in = null;
// write the output file (You have now copied the file)
out.flush();
out.close();
out = null;
}
}
catch(FileNotFoundException fnfe)
{
Log.e(TAG, "FileNotFoundException");
Log.e(TAG, Log.getStackTraceString(fnfe));
}
catch(IOException ioe)
{
Log.e(TAG, "IOException");
Log.e(TAG, Log.getStackTraceString(ioe));
}
catch(Exception e)
{
Log.e(TAG, "General Exception");
Log.e(TAG, Log.getStackTraceString(e));
}
}
I've tried other methods that I've overwritten in the process, but accessing the files to be used again I need something like this:
public void openDirectory(View view)
{
// Choose a directory using the system's file picker.
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
// Provide read access to files and sub-directories in the user-selected
// directory.
//intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
//intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
//intent.addCategory(Intent.CATEGORY_OPENABLE);
// Optionally, specify a URI for the directory that should be opened in
// the system file picker when it loads.
//intent.putExtra(DocumentsContract.EXTRA_INITIAL_URI, uriToLoad);
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*"); //use image/* for photos, etc.
//The result of this code will be calling the onActivityResult function below
startActivityForResult(intent, REQUEST_MUSIC_DIR);
}
Edit2:
I've reorganized the folders to what I think I should be doing so that I can work with the files freely, however, even in my internal cache storage (getCacheDir() + folder_name) either isn't letting me create the files (outputFile.createNewFile doesn't throw an error) or it isn't letting me open them when I go to get a directory listing.
Here's my code for creating the file:
String path = getCacheDir() + MY_SUB_FOLDER;
//uri is obtained through ACTION_OPEN_DOCUMENT intent
InputStream in = contentResolver.openInputStream(uri);
File outputFile = new File(path + "/" + fileName);
outputFile.createNewFile();
Log.i(TAG, "The new file's directory/path is: " + outputFile.getAbsolutePath());
//NOTE: This is returning /data/user/0/com.example.myapplication/cache/MY_SUB_FOLDER/file_name.mp3
OutputStream out = new FileOutputStream(outputFile);
byte[] buffer = new byte[1024];
int read;
while ((read = in.read(buffer)) != -1)
{
out.write(buffer, 0, read);
}
in.close();
in = null;
out.flush();
out.close();
out = null;
This is my code for attempting to open and read these newly created files
File directory = new File(getCacheDir(), MY_SUB_FOLDER);
Log.i(TAG, "This is the directory we're trying to get the files from: " + directory.getAbsolutePath());
//NOTE: This returns /data/user/0/com.example.myapplication/cache/MY_SUB_FOLDER
File[] files = directory.listFiles();
if(files != null)
{
for(int i = 0; i < files.length; i++)
{
Log.d(TAG, "Files found: " + files[i].getAbsolutePath());
}
}
The files variable isn't null but it's length is 0 and no files are found.
Edit3:
I am catching the exceptions and logging any stack traces, which currently returns nothing.
catch(FileNotFoundException fnfe)
{
Log.i(TAG, "FileNotFoundException");
Log.i(TAG, Log.getStackTraceString(fnfe));
}
catch(IOException ioe)
{
Log.i(TAG, "IOException");
Log.i(TAG, Log.getStackTraceString(ioe));
}
catch(Exception e)
{
Log.i(TAG, "General Exception");
Log.i(TAG, Log.getStackTraceString(e));
}
Sorry,
I have no experience with the Android file system, I am struggling to understand it via the documentation and the tutorials.
I am trying to copy a file from a location to the external storage of my app.
final File filetobecopied =item.getFile();
File path=getPrivateExternalStorageDir(mContext);
final File destination = new File(path,item.getName());
try
{copy(filetobecopied,destination);
}
catch (IOException e) {Log.e("",e.toString());}
public void copy(File src, File dst) throws IOException {
InputStream in = new FileInputStream(src);
OutputStream out = new FileOutputStream(dst);
// Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
Toast.makeText(mContext,"COPIED",Toast.LENGTH_SHORT).show();
}
public File getPrivateExternalStorageDir(Context context) {
File file = context.getExternalFilesDir(null);
if (!file.mkdirs()) {
Log.e("", "Directory not created");
}
return file;
}
I get the following error:
09-18 10:14:04.260: E/(7089): java.io.FileNotFoundException: /storage/emulated/0/Android/data/org.openintents.filemanager/files/2013-08-24 13.18.14.jpg: open failed: EISDIR (Is a directory)
http://developer.android.com/reference/android/content/Context.html#getExternalFilesDir(java.lang.String) use this example of code and use standart examples of google)
Try
final File destination = new File(path + "/" + item.getName());
instead.
I assume, folder directory is not created or your external storage state is not mounted.
Before you perform file operations, you should sanitize your path. Following code is a sample code that I often use.
public File sanitizePath(Context context) {
String state = android.os.Environment.getExternalStorageState();
File folder = null;
if (!state.equals(android.os.Environment.MEDIA_MOUNTED)) {
folder = new File(context.getFilesDir() + path);
// path is the desired location that must be specified in your code.
}else{
folder = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + path);
}
if (!folder.exists()){
folder.mkdirs();
}
return folder;
}
And be sure about that, when your directory has to be created before you perform file operations.
Hope this will help.
EDIT: By the way, you have to add following permission to your manifest.xml file
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
I have some images to be displayed in the Application (When user selects an image from it, like picking from gallery ).
The question is how to copy the images I am putting in the assets
folder in the code to a folder on the SD card.
Edit: I tried this example : http://www.technotalkative.com/android-copy-files-from-assets-to-sd-card/
I have given the app permission to read and write
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
AssetManager assetManager = context.getAssets();
InputStream is = assetManager.open(fileName);
Get the AssetManager and call open with the filename you want to copy as parameter.
Then you can simply copy in this way
File out = new File(Environment.getExternalStorageDirectory(), fileName);
byte[] buffer = new byte[BUFFER_LEN];
FileOutputStream fos = new FileOutputStream(out);
int read = 0;
while ((read = is.read(buffer, 0, BUFFER_LEN)) >= 0) {
fos.write(buffer, 0, read);
}
fos.flush();
fos.close()
is.close()
remember to add the WRITE_EXTERNAL_STORAGE permission in your AndroidManifest.xml file
private void copyFileAssets() {
AssetManager assetManager = getAssets();
InputStream in = null;
OutputStream out = null;
try {
in = assetManager.open("ceo.jpg");
out = new FileOutputStream(Environment.getExternalStorageDirectory()+File.separator+ "abc.jpg");
copyFile(in, out);
in.close();
in = null;
out.flush();
out.close();
out = null;
} catch(IOException e) {
Log.e("tag", "Failed to copy asset file: " + filename, e);
}
}
private void copyFile(InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while((read = in.read(buffer)) != -1){
out.write(buffer, 0, read);
}
}
you have to add this permission:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
Get the bitmap resource using one of the many ways.
Ex:
Bitmap bitmap = BitmapFactory.decodeResource(resource, id); // get your bitmap that you want to save on SD card.
Get the path to store the resource.
String compressedFilePath = Environment.getExternalStorageDirectory() + File.separator + "FOLDERNAME" + File.separator + "FILENAME.jpg";
Save using compress method. (Shortcut way to save image as per docs)
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, new FileOutputStream(new File(pathToStore))); // use 100 to make sure image quality is not reduced(Read the docs)
Note: You need Write(and may be read in future) access to write to SDCARD.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
I need to find a way how to create files from specific folder in Internal Storage of my device to a specific folder in External Storage.
Example :
I have 50 image files in data/data/app_package/files/documents/server/userId/storage/ in Internal Storage.
I want to copy all of the files in that directory to /sdcard/Documents/Server/UserId/Storage/
And the idea is that in some cases maybe I'll have to move files like 50MB and maybe more. Any suggestions how can I achieve this?
try this code
private void copyToFolder(String path) throws IOException {
File selectedImage = new File(path);
if (selectedImage.exists()) {
String wall = selectedImage.getName();
in = getContentResolver().openInputStream(selectedImageUri);
out = new FileOutputStream("/sdcard/wallpapers/" + wall);
copyFile( in , out); in .close(); in = null;
out.flush();
out.close();
out = null;
} else {
System.out.println("Does not exist");
}
}
private void copyFile(InputStream in , OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while ((read = in .read(buffer)) != -1) {
out.write(buffer, 0, read);
}
}
I have an interesting problem: My application is designed to send and open up a zip full of files, and the zip has a special extension (easier for the user). I can zip up the files I need to attach in an e-mail, and I can send them.
When I use the g-mail "view" button and select my app to open the file, it doesn't unzip them correctly. However, if I use the gmail "download" button, and then open the file through a file explorer, the file unzips correctly.
This is the code I use to download the attachment:
// get attachment
try {
attachment = getContentResolver().openInputStream(
getIntent().getData());
} catch (FileNotFoundException e) {
e.printStackTrace();
}
// Save it
try {
File root = Environment.getExternalStorageDirectory();
path = root.getPath() + "/PSattachment.psz";
savedFile = new File(path);
FileOutputStream fos = new FileOutputStream(savedFile, false);
BufferedOutputStream os = new BufferedOutputStream(fos);
byte[] buffer = new byte[1024];
int byteRead = 0;
while ((byteRead = attachment.read(buffer)) != -1) {
os.write(buffer, 0, byteRead);
}
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
Am I doing something wrong? Thanks in advance. (Also, the process of unzipping is the same in both cases [file explorer and view from email], so I'm pretty sure it's something in here. Also, the file DOES download, and is the right size. It just won't unzip).
I found the answer!!! Took a while, but at least it works now:
try {
InputStream attachment = getContentResolver()
.openInputStream(getIntent().getData());
savedFile = new File(Environment
.getExternalStorageDirectory().getAbsolutePath(),
"temp" + System.currentTimeMillis() + ".psz");
FileOutputStream f = new FileOutputStream(savedFile);
byte[] buffer = new byte[1024];
int len1 = 0;
while ((len1 = attachment.read(buffer)) > 0) {
f.write(buffer);
}
f.close();
} catch (Exception e) {
}
I just used this code to download the attachment and now everything works perfectly =D
Check this out please:
http://www.jondev.net/articles/Unzipping_Files_with_Android_(Programmatically)
A guide to unzip files in android, hope it helps solve your problem