Develop Reference

How to programmatically set some images as invisible from the Gallery?

I need to make images invisible from my gallery and i see other answers on stackoverflow but did not work for me .
this how i done that programmatically .
public void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode,data);
if(resultCode== Activity.RESULT_OK){
if(requestCode==REQUEST_CAMERA){
Uri selectedImageUri = data.getData();
if (null != selectedImageUri) {
// Get the path from the Uri
String path = getPathFromURI(selectedImageUri);
File file = new File(path);
Bitmap bmp = CommonMethod.compressImage(file, getContext());
Log.e(TAG, "onActivityResult --: "+ String.format("Size : %s", getReadableFileSize(file.length())));
mCustomerImage = CommonMethod.bitmapToByteArray(bmp);
imageTemplateStr = Base64.encodeToString(mCustomerImage, Base64.DEFAULT);
Log.e(TAG, "image: "+ imageTemplateStr );
//CommonMethod.SaveImage(bmp);
imageCustomer.setImageBitmap(bmp);
CommonMethod.SaveImage(bmp);
}
}else if(requestCode==SELECT_FILE){
Uri selectedImageUri = data.getData();
if (null != selectedImageUri) {
// Get the path from the Uri
String path = getPathFromURI(selectedImageUri);
File file = new File(path);
Bitmap bmp = CommonMethod.compressImage(file, getContext());
Log.e(TAG, "onActivityResult --: "+ String.format("Size : %s", getReadableFileSize(file.length())));
mCustomerImage = CommonMethod.bitmapToByteArray(bmp);
imageTemplateStr = Base64.encodeToString(mCustomerImage, Base64.DEFAULT);
//CommonMethod.SaveImage(bmp);
Log.e(TAG, "image: "+ imageTemplateStr );
imageCustomer.setImageBitmap(bmp);
CommonMethod.SaveImage(bmp);
}
}
SaveImage Method :
public static void SaveImage(Bitmap finalBitmap) {
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/safco_private_pics");
if (!myDir.exists()) {
myDir.mkdirs();
}
File newFile = new File(root,".nomedia");
try {
FileWriter writer = new FileWriter(newFile);
writer.flush();
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
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();
}
}
getPathFromURI method
public String getPathFromURI(Uri contentUri) {
String res = null;
String[] proj = {MediaStore.Images.Media.DATA};
Cursor cursor = getActivity().getContentResolver().query(contentUri, proj, null, null, null);
if (cursor.moveToFirst()) {
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
res = cursor.getString(column_index);
}
cursor.close();
return res;
}
Now by that code images from gallery are not shown but images from Camera are visible in gallery and also .nomedia file not created.
Images are stored in my folder that i created and also in DCIM/Camera folder . I do not know why
What is wrong can anybody help me . ?

If you want to save the image for temporarily then you can use following code
File outputDir = context.getCacheDir(); // context should be the Activity pointer
File outputFile = File.createTempFile("prefix", "extension", outputDir);
Instead of
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/safco_private_pics");
For more details about cache dir read this: https://stackoverflow.com/a/6528104/7708305
But, If you want your file to be hidden and persisted on the permanent storage regardless of usage you can use following code.
File file = new File(root + "/.hidden_folder");
The dot(.) before the file/folder name makes it hidden.

let your image in hidden folder
//replace
File myDir = new File(root + "/safco_private_pics");
//with
File myDir = new File(root + "/.safco_private_pics");
put dot(.)before directory name it will create hidden directory and put your image in that directory

Find image location on HDD, then insert that into SQLite database [duplicate]

I'm trying to upload image to Google Drive from my android app,
based on this tutorial.
When I debug their sample project I see a typical fileUri =
file:///storage/sdcard0/Pictures/IMG_20131117_090231.jpg
In my app I want to upload an existing photo.
I retrieve its path like that
private void GetAnyImage()
{
File dir = new File(Environment.getExternalStorageDirectory()
.getAbsolutePath() + "/Pictures/Screenshots");
// --> /storage/sdcard0/Pictures/Screenshots
Log.d("File path ", dir.getPath());
String dirPath=dir.getAbsolutePath();
if(dir.exists() && dir.isDirectory()) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
intent.setType("image/*");
startActivityForResult(intent,REQUEST_ID);
}
}
and eventually get this typical fileUri =content://media/external/images/media/74275
however when running this line of code
private void saveFileToDrive() {
// progressDialog = ProgressDialog.show(this, "", "Loading...");
Thread t = new Thread(new Runnable() {
#Override
public void run() {
try {
// File's binary content
java.io.File fileContent = new java.io.File(fileUri.getPath());
FileContent mediaContent = new FileContent("image/jpeg", fileContent);
// File's metadata.
File body = new File();
body.setTitle(fileContent.getName());
body.setMimeType("image/jpeg");
File file = service.files().insert(body, mediaContent).execute();
I get an error:
java.io.FileNotFoundException: /external/images/media/74275: open failed: ENOENT (No such file or directory)
how can I solve this?
how to convert content://media/external/images/media/Y to file:///storage/sdcard0/Pictures/X.jpg ?

Will something like this work for you? What this does is query the content resolver to find the file path data that is stored for that content entry
public static String getRealPathFromUri(Context context, Uri contentUri) {
Cursor cursor = null;
try {
String[] proj = { MediaStore.Images.Media.DATA };
cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} finally {
if (cursor != null) {
cursor.close();
}
}
}
This will end up giving you an absolute file path that you can construct a file uri from

If you just want the bitmap, This too works
InputStream inputStream = mContext.getContentResolver().openInputStream(uri);
Bitmap bmp = BitmapFactory.decodeStream(inputStream);
if( inputStream != null ) inputStream.close();
sample uri : content://media/external/images/media/12345

How to read files at a specific path in android?

I am developing an application in which I open the file explorer and select any file of my choice and retrieve its contents. The default path that opens is /storage/sdcard0 . I am able to read contents of any file that resides directly in this path. However, for any file that in contained in any folder inside /storage/sdcard0/. is inaccessible. The program gives a file not found error. Also, I cannot understand the path that these files have, like for example, if a file resides in path:
/storage/sdcard0/DCIM/100ANDRO/DSC_0001.jpg
,
the logcat shows the path to be:
content:/media/external/images/media/84290/DSC_0001.jpg
How to access this file in my Java code?
Below is the code snippet:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.d(TAG, "requestCode received: "+requestCode+" result code: "+resultCode);
if (requestCode == 1 && resultCode == RESULT_OK) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
String folderPath = "Anant";
String filePath = "image.jpg";
String imagePath = saveToInternalStorage(thumbnail, folderPath,
sImageName);
Log.i(TAG, "DeviceAPIS:actual path :: "
+ imagePath.trim().toString());
sendCameraData(imagePath.toString().trim(),
ptrAppContainerForCamera);
}
else if (requestCode == REQUEST_PATH){
if (resultCode == RESULT_OK) {
// Get the Uri of the selected file
Uri uri = data.getData();
Log.d(TAG, "data.getData() result line 742: " + uri);
String uriString = uri.toString();
File myFile = new File(uriString);
String path = myFile.getAbsolutePath();
String base64 ="Error";
byte[] bytesRead = base64.getBytes();
String displayName = null;
String fileName = null;
if (uriString.startsWith("content://")) {
Cursor cursor = null;
try {
cursor = mContext.getContentResolver().query(uri, null, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
displayName = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
displayName = path + "/" + displayName;
Log.d(TAG, "BEFORE REPLACE: "+displayName);
int index = displayName.indexOf(':');
fileName = displayName.substring(index + 1, displayName.length());
Log.d(TAG,"displayName line 762 " + Part);
}
} finally {
cursor.close();
}
} else if (uriString.startsWith("file://")) {
Log.d(TAG, "FILE BLOCK LINE 768");
displayName = myFile.getName();
Log.d(TAG,"displayName 11" + displayName);
}
try{
File sdcard = Environment.getExternalStorageDirectory();
File readFile = new File(sdcard, fileName);
// File readFile = new File(uri);
int length = (int)readFile.length();
byte[] bytes = new byte[length];
FileInputStream in = new FileInputStream(readFile);
try{
in.read(bytes);
}finally {
in.close();
}
String contents = new String(bytes);
Log.d(TAG,"contents read :: \\n" + contents);
//convert to Base64
bytesRead = contents.getBytes("UTF-8");
base64 = Base64.encodeToString(bytesRead,Base64.DEFAULT);
}catch (Exception e){
Log.d(TAG, "THROWING EXCEPTION");
Log.e(TAG,e.getMessage(),e);
}
}
The exception thrown is java.io.FileNotFoundException. Any help is greatly appreciated.

You can try as below:
String path = null;
Uri originalUri = data.getData();
try {
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = this.managedQuery(originalUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
path = cursor.getString(column_index);
} catch (Exception e) {
} finally {
cursor.close();
}
And if path is null, you can get bitmap first and then copy it to your local path.
ContentResolver resolver = this.getContentResolver();
Bitmap photo = MediaStore.Images.Media.getBitmap(resolver, originalUri);
.... // copy photo to your local path

you can try this,
1. make sure you have added permission in you manifest file
2. Settings -> Apps -> Your App -> Permissions -> Storage = true/enabled
I had faced a same issue of FileNotFound and i was able to resolve it by #2 above.

open failed:ENOENT (No such file or directory) error

I've got a problem trying to upload an image I get from taking a picture with the camera,using amazon S3 android library.
To save the picture
File _photoFile = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM), (cal.getTimeInMillis() + ".jpg"));
try {
if (_photoFile.exists() == false) {
_photoFile.getParentFile().mkdirs();
_photoFile.createNewFile();
}
} catch (IOException e) {
// Log.e(TAG, "Could not create file.", e);
}
// Log.i(TAG, path);
filePath = Uri.fromFile(_photoFile);
Intent cameraIntent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, filePath);
startActivityForResult(cameraIntent, 1);
To upload the picture with the filePath:
try {
s3Client.createBucket(Constants.getPictureBucket());
// Content type is determined by file extension.
PutObjectRequest por = new PutObjectRequest(
Constants.getPictureBucket(), Constants.PICTURE_NAME,
new java.io.File(filePath));
s3Client.putObject(por);
} catch (Exception exception) {
result.setErrorMessage(exception.getMessage());
}
I keep getting an error Unable to calclualte MD5 hash:/file:/storage/sdcard0/DCIM/13161272646580.jpg open failed:ENOENT (No such file or directory)
but when I browse my sd card's directory I can find the picture there(the picture has been created), and I've created the relevant permissions.

The problem is in your file path. Use a method like that to get the Real Path.
I give you an example, if you are getting the image from onActivityResult()
You should have a onActivityResult(int requestCode, int resultCode, Intent data) where you can get the Uri of your image.
Uri uri = data.getData();
Then you use it and get the real path from Uri and pass this to the PutObjectRequest(BUCKET_NAME, IMAGE_NAME, REAL_PATH);
public String getRealPathFromURI(Context context, Uri contentUri) {
Cursor cursor = null;
try {
String[] proj = { MediaStore.Images.Media.DATA };
cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} finally {
if (cursor != null) {
cursor.close();
}
}
}
I had the same problem and I solve it doing this. Hope it helps!

I don't really remember what I did. But this is the code I use that works. Hope it can help you guys!
AmazonS3Client s3Client = new AmazonS3Client(new BasicAWSCredentials("XXX", "XXX"));
String time = "" + System.currentTimeMillis();
PutObjectRequest por = new PutObjectRequest("fraternity", xyz_url_xyz + "/avatar" + time + ".jpg", new java.io.File(params[0]));
por.setCannedAcl(CannedAccessControlList.PublicRead);
s3Client.putObject(por);
ResponseHeaderOverrides override = new ResponseHeaderOverrides();
override.setContentType("image/jpeg");
GeneratePresignedUrlRequest urlRequest = new GeneratePresignedUrlRequest("xyz_url_xyz/avatar.jpg");
urlRequest.setExpiration(new Date(System.currentTimeMillis() + 3600000));
urlRequest.setResponseHeaders( override );
s3Client.generatePresignedUrl(urlRequest);

new File(uri.toString()) returns file not found

I have a URI and I want to create a file from this URI:
fileUri = file:///mnt/sdcard/20120904_162830.png;
File fichero = new File(fileUri.toString();
This works fine but when I try to create use or fichero.exist() = false
How can I create a file from this fileUri?
Solution:
fichero = new File(fileUri.getPath());//for camera
if (!fichero.exists()) {
fichero = new File(getRealPathFromURI(fileUri));//for gallery
}
public String getRealPathFromURI(Uri contentUri) {
String[] proj = { MediaStore.Images.Media.DATA };
#SuppressWarnings("deprecation")
Cursor cursor = managedQuery(contentUri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}

Try this:
File fichero = new File(fileUri.getPath());

File dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
File output = new File(dir,"20120904_162830.png");
add this permission to manifest...
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
EDIT :
String filename= output.getAbsolutePath();
filename= str.subString(str.indexOf("/"),str.length());

Here is solution
fileUri = "file:///mnt/sdcard/20120904_162830.png";
URI fUri = new URI(fileUri);
File fichero = new File(fileUri.getPath());
This works only if you are not giving any web address in fileUri