Develop Reference

How to save Image(imported from gallery of phone to android app) and save into android app local directory?

I have searched all questions related to this but i did not get solution. My requirement is From my Android app, user can choose image from gallery of phone and set this as his favorite. My question is photo taken from gallery need to be saved to app local directory(This directory is not visible to user because it will store in app).If user remove the image from phone gallery then also app should show his favorite image. So i need to save local directory.Please help me on this. Thanks in Advance. I know following code is used to store to sdcard but i need to save image from sdcard to local folder of app.
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inSampleSize = 1;
Bitmap bm = LoadImage(imagePath, bmOptions);
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/MyFolder");
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);
bm.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}

Using for example:
File path = getExternalFilesDir(Environment.DIRECTORY_DCIM);
File image = new File(path,imageFileName );
Your image will be save in your app directory.

Writing File in External SD card in android

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())));

Is it possible to create a new folder?

Is it possible to create a new folder for images (to be taken through my app) to be stored in, on the android phone? (Or SD Card as far as I'm concerned). I could name it what I like [Maybe the name of my app so the files are easily found] and then the images taken by launching the camera through my app will be stored there. I'm thinking it might have something to do with Uri's. (Just a guess.)

use this code
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" />
check this link Android saving file to external storage

Just use File operation for that..
File imageDirectory = new File("/sdcard/Images/"); // Path for location where you want to make directory, Internal or External storage
// have the object build the directory structure, if needed.
imageDirectory.mkdirs();
And in Application's manifest file put permission..
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

Why not?
String path = Environment.getExternalStorageDirectory().getAbsoluteFile() + "/YourAppRootDir";
File dir = new File(path);
dir.mkdirs();

How to save paints aswell as that background into sdcars

My Android application is supposed to save paints and a background image on my device's SD Card. I am using the method below inside my view class, but for some reason the SD Card is only saving the paints. I can't figure out why the background image isn't saving.
File myDir=new File("/sdcard/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);
mBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
This is where I'm attempting to save the background, but it isn't working. Any ideas would be greatly appreciated.

Take image from SD card, compress it, and save it back to SD?

Im trying to capture an image from the camera, and if its too big i want to compress the bitmap and send it back to the sd card. I initially tried to pull the image directly into internal memory but apparently according to this answer to my previous question i can do that: android picture from camera being taken at a really small size
How could I bring that image file back into my apps internal memory?

You may rescale image using the code below.
Bitmap yourBitmap;
Bitmap resized = Bitmap.createScaledBitmap(yourBitmap, newWidth, newHeight, true);
This will compress your image to smaller size, you just have need to give new height and width as per your requirement.

Onclick of button Call Method to Save your Image to SDcard:
SaveImage(bitmap);
Saving Image to SdCard:
private void SaveImage(Bitmap finalBitmap) {
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/demo_images");
myDir.mkdirs();
Random generator = new Random();
int n = 10000;
n = generator.nextInt(n);
fname = "Image-"+ n +".jpg";
File file = new File (myDir, fname);
// Below code will give you full path in TextView
> txtPath1.setText(file.getAbsolutePath());
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();
}
}
For getting Image from SdCard:
Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath());
imageview.setImageDrawable(bitmap);
For Storing Image to Internal Memory:
Saving and Reading Bitmaps/Images from Internal memory in Android

The image that you get from the camera is already compressed in the jpeg format. You will never get a raw image from the camera.