I'm able to save a Image in disk using :
String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath();
String fileName = imageId + ".png";
String filePath = baseDir + File.separator + fileName;
File file = new File(filePath);
if(!file.exists())
{
out = new FileOutputStream(baseDir + File.separator + fileName);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
}
But all the images saved are visible in the gallery of the phone .. How can I hide them to the user ? Is there a private folder for my appliaction ?
Thanks
Save it to the internal storage using Context.getFilesDir() instead of Environment.getExternalStorageDirectory().
From the docs:
Files saved here are accessible by only your app by default.
Check this link out.
public File getAlbumStorageDir(Context context, String albumName) {
// Get the directory for the app's private pictures directory.
File file = new File(context.getExternalFilesDir(
Environment.DIRECTORY_PICTURES), albumName);
if (!file.mkdirs()) {
Log.e(LOG_TAG, "Directory not created");
}
return file;
}
I think this is what you want. Read https://developer.android.com/training/basics/data-storage/files.html#WriteExternalStorage for more information.
Related
I'm a newbie Android developer. I have loaded an image using universal-image-loader and I would like to save it on my sd card. The file is created in the desired directory with the correct filename, but it always has a size of 0. What am I doing wrong?
A relevant snippet follows:
PS: The image already exists on disk, it's not being downloaded from the Internet.
private void saveImage(String imageUrls2, String de) {
String filepath = Environment.getExternalStorageDirectory()
.getAbsolutePath();
File SDCardRoot = Environment.getExternalStorageDirectory()
.getAbsoluteFile();
String filename = de;
File myDir = new File(SDCardRoot+"/testdir");
Bitmap mSaveBit = imageLoader.getMemoryCache();
File imageFile = null;
try {
//create our directory if it does'nt exist
if (!myDir.exists())
myDir.mkdirs();
File file = new File(myDir, filename);
if (file.exists())
file.delete();
FileOutputStream fileOutputStream = new FileOutputStream(file);
BufferedOutputStream bos = new BufferedOutputStream(fileOutputStream);
bos.flush();
bos.close();
} catch (IOException e) {
filepath = null;
e.printStackTrace();
Toast.makeText(getApplicationContext(),
R.string.diskful_error_message, Toast.LENGTH_LONG)
.show();
}
Log.i("filepath:", " " + filepath);
}
Yes, your code creates an file on sdcard_root/testdir/de only, and didn't write anything to it. Is "imageUrls2" the source image file? If yes, you can open that file with BufferedInputStream, read the data from BufferedInputStream, and copy them to output file with bos.write() before bos.flush() and bos.close().
Hope it helps.
I am have downloaded some images into my sd card and i would like to NOT display them in my gallery. Is there a way to remove them? I have read about .nomedia file but how to do I create them?
is it by doing this?
File storagePath = new File(Environment.getExternalStorageDirectory(),folderName+"/Covers/");
if (!storagePath.exists())
{
File file = new File(storagePath, ".nomedia");
if (!file.exists()) {
try {
file.createNewFile();
Log.d("created","successful");
}
catch(IOException e) {
}
}
}
Here's a snippet that will do what you want:
File storagePath = new File(Environment.getExternalStorageDirectory(),
folderName + "/Covers");
storagePath.mkdirs();
File filename;
filename = new File(storagePath + "/" + ".nomedia");
if (!filename.exists()) {
filename.createNewFile();
}
Note: It might throw an IOException if it cannot create the file, you should catch this.
It will take likely a reboot for the mediascanner to rescan and determine it should not index that location.
I used a tutorial to download a zip into a subdirectory of my application's internal storage. I wrote the zip to /data/data/my.package.name/files/mySubDirectory/the.zip.
But, when I check to see whether the zip exists, it doesn't:
String fileDirectory = this.getFilesDir().getAbsolutePath() + "/mySubDirectory/the.zip";
File file = new File(fileDirectory);
if(file.exists()) {
Log.e(this.class.getName(), "file exists");
} else {
Log.e(this.class.getName(), "file doesn't exist");
}
I verified that fileDirectory is the same path as the File outFile for the FileOutputStream.
What could be the problem?
Try getting your file path as below :
String fileDirectory=Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "data" + File.separator + "data" + File.separator+ getActivity().getPackageName()+ File.separator +"mySubDirectory"+File.separator+"the.zip";
Using this SO question, I created a subdirectory using this example:
File mydir = context.getDir("mydir", Context.MODE_PRIVATE); //Creating an internal dir;
File fileWithinMyDir = new File(mydir, "myfile"); //Getting a file within the dir.
FileOutputStream out = new FileOutputStream(fileWithinMyDir); //Use the stream as usual to write into the file
The problem is that I didn't expect the subdirectory to be prepended with "app_", so I was looking for the zip in the wrong place.
Try using getFilesDir() + "/" subdirectory + "/" "the.zip"
Without the getabsolutepath().
That is what I used could be the issue.
OK maybe you problem is with permissions do you see the file in the DDMS under data/data/package/files ? Check the permissions for the files
Here is my code
String path = getFilesDir() + "/"
+ subDirName + "/";
File file = new File(path);
file.mkdirs();
setReadable(file);
I use the following to make the file readable
#TargetApi(9)
private void setReadable(File file) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
try {
Runtime.getRuntime().exec(
"chmod 777 " + file.getCanonicalPath());
} catch (IOException e1) {
e1.printStackTrace();
}
} else {
file.setReadable(true, false);
}
}
}
I'm trying to write an image file into the public gallery folder in a specific directory but I keep getting an error that I can't open the file because its a directory.
What I have so far is the following
//set the file path
String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + File.separator + directory;
File outputFile = new File(path,"testing.png");
outputFile.mkdirs();
FileOutputStream out = new FileOutputStream(outputFile);
bmp.compress(Bitmap.CompressFormat.PNG, 100, out);
Where directory is the application name. So all the photos saved by the application will go into that folder/directory, but I keep getting the error
/storage/sdcard0/Pictures/appname/testing.png: open failed: EISDIR (Is a directory)
Even if I don't try to put it in a directory and cast the variable path as a File like
File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
I don't get the error however the photo is still not showing up in the gallery.
***Answer
The problem was that when I ran this code originally it created a DIRECTORY named testing.png because I failed to create the directory before creating the file IN the directory. So the solution is to make the directory first then write into it with a separate file like so
String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString() + File.separator + directory;
//directory is a static string variable defined in the class
//make a file with the directory
File outputDir = new File(path);
//create dir if not there
if (!outputDir.exists()) {
outputDir.mkdir();
}
//make another file with the full path AND the image this time, resized is a static string
File outputFile = new File(path+File.separator+resized);
FileOutputStream out = new FileOutputStream(outputFile);
bmp.compress(Bitmap.CompressFormat.PNG, 100, out);
Note you may need to go into your storage and manually delete the directory if you made the same mistake i did to begin with
You are trying to write into a directory instead of file.
try this
String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + File.separator + directory;
File outputDir= new File(path);
outputDir.mkdirs();
File newFile = new File(path + File.separator + "test.png");
FileOutputStream out = new FileOutputStream(newFile);
bmp.compress(Bitmap.CompressFormat.PNG, 100, out);
Your code is correct, only little changes needs as follows,
String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + File.separator + directory;
// First Create Directory
File outputFile = new File(path);
outputFile.mkdirs();
// Now Create File
outputFile = new File(path,"testing.png");
FileOutputStream out = new FileOutputStream(outputFile);
bmp.compress(Bitmap.CompressFormat.PNG, 100, out);
Also don't forget to give WRITE_EXTERNAL_STORAGE permission in your AndroidManifest.xml file.
If you are getting this error while working on Android Emulator; you need to enable SD Card storage on the emulator.
public static String SaveImage(Bitmap finalBitmap) {
String root = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString();
File myDir = new File(root + "/FolderName");
if(!myDir.exists())
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = "Image-"+ n +".png";
File file = new File (myDir, fname);
if (file.exists ()) file.delete ();
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Throwable e) {
e.printStackTrace();
}
return file.getAbsolutePath();
}
getExternalStoragePublicDirectory is now deprecated and you should use
context.getExternalFilesDir(Environment.DIRECTORY_PICTURES)
Use this way :
bitmap.compress(CompressFormat.JPEG, 100, new FileOutputStream("/mnt/sdcard/" + new Date().getTime() + ".jpg"));`
Path : Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + File.separator + file name
I have tried so many ways to write file in external as card but not working. Please suggest me what to do.
The code snippet that I wrote is as follows:
final String directoryFile = "file:///"+"mnt/extsd/Test";
String filename = "TextData.txt";
Context context;
//String file=Environment.getExternalStorageDirectory()+ "/TextData.txt";
//String file = "mnt/extsd/TextData.txt";
//String file=Environment.getExternalStorageDirectory()+ "/RudimentContent/test.txt";
//File root = android.os.Environment.getExternalStorageDirectory();
//File dir = new File (root.getAbsolutePath() + "/download");
//File path = Environment.getExternalStorageDirectory();
//String filename = "TextData.txt";
//String fileName = "TextData.txt";
//String path = "Environment.getExternalStorageDirectory()/TextData.txt";
//File path = Environment.getExternalStorageDirectory();
public void onClick(View v)
{
// write on SD card file data in the text box
// dir.mkdirs();
//File file = new File(dir, "myData.txt");
//String fileName = surveyName + ".csv";
//String headings = "Hello, world!";
//File file = new File(path, fileName);
//path.mkdirs();
//OutputStream os = new FileOutputStream(file);
//os.write(headings.getBytes());
//create path
//create file
//File outFile = new File(Environment.getExternalStorageDirectory(), filename);
//File directoryFile = new File("mnt/extsd", "Test");
//directoryFile.mkdirs();
//create file
//File file = new File(Environment.getExternalStorageDirectory(), filename);
try{
File myFile = new File(directoryFile, filename); //device.txt
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);
myOutWriter.append(txtData.getText());
myOutWriter.close();
fOut.close();
Toast.makeText(getBaseContext(),"Done writing SD "+myFile.getPath(),Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(getBaseContext(), e.getMessage(),Toast.LENGTH_SHORT).show();
}
}
});
I have commented on so may tried codes also. When I write in internal sd card then its working but not with external. Please suggest.
I had this before.
The reason you're having this exception is due to some bizarre ways the framework handles files and folders.
on my case was that I was testing, and all was working, and I deleted the testing folder and since then the system keeps trying to write on the deleted folder. I removed the project from the phone and reboot it and started working again.
furthermore, I suggest you a quick reading on this answer What is the best way to create temporary files on Android? and the comments of this answer... as there is a lot of useful information if you want to create a good app.
just set permission like this
android.permission.WRITE_EXTERNAL_STORAGE
If you're using API Level 8 or greater, use getExternalFilesDir() to open a File that represents the external storage directory where you should save your files. This method takes a type parameter that specifies the type of subdirectory you want, such as DIRECTORY_MUSIC and DIRECTORY_RINGTONES (pass null to receive the root of your application's file directory).
This method will create the appropriate directory if necessary.
If you're using API Level 7 or lower, use getExternalStorageDirectory(), to open a File representing the root of the external storage. You should then write your data in the following directory:
/Android/data//files/
You will have to set the permissions too:
android.permission.WRITE_EXTERNAL_STORAGE
try this
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/saved_images");
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
String fname = "Image-"+ n +".jpg";
File file = new File (myDir, fname);
if (file.exists ()) file.delete ();
try {
FileOutputStream out = new FileOutputStream(file);
finalBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
and add this in manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
EDIT: By using this line you can able to see stores images in the gallery view.
sendBroadcast(new Intent(
Intent.ACTION_MEDIA_MOUNTED,
Uri.parse("file://" + Environment.getExternalStorageDirectory())));