Develop Reference

Cannot read image written to file

I am trying to write an image on storage then reading it. Write operation is successful but read fails. I have tried using intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION); when calling the responsible activity but was of no help.
This is how I write image:
public void savepic(Bitmap pic)
{
SQLiteDatabase db = dBcontract.getWritableDatabase();
ContentValues values = new ContentValues();
FileOutputStream out = null;
try
{
File image = createImageFile();
Uri photoURI = FileProvider.getUriForFile(context, "lcukerd.com.android.fileprovider", image);
out = new FileOutputStream(image);
pic.compress(Bitmap.CompressFormat.PNG, 100, out);
values.put(eventDBcontract.ListofItem.columnpic, photoURI.toString());
db.insert(eventDBcontract.ListofItem.tableName2, null, values);
Log.i(TAG, "Pic saved " + photoURI.toString());
} catch (Exception e)
{
e.printStackTrace();
} finally
{
try
{
if (out != null)
{
out.close();
}
} catch (IOException e)
{
e.printStackTrace();
}
}
}
private File createImageFile() throws IOException
{
String EName = "Image";
File storageDir = context.getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(EName, ".jpg", storageDir);
return image;
}
This is how I read image:
public Bitmap getDownloadedpics(int index)
{
SQLiteDatabase db = dBcontract.getReadableDatabase();
Cursor cursor = db.query(eventDBcontract.ListofItem.tableName2, projection2, null, null, null, null, null);
cursor.moveToPosition(index);
Bitmap photo = null;
try
{
Log.d(TAG,cursor.getString(cursor.getColumnIndex(eventDBcontract.ListofItem.columnpic)));
photo = MediaStore.Images.Media.getBitmap(context.getContentResolver(),
Uri.parse(cursor.getString(cursor.getColumnIndex(eventDBcontract.ListofItem.columnpic))));
} catch (IOException e)
{
Log.e(TAG, "Can't read image");
}
Log.d(TAG, "Returned " + String.valueOf(cursor.getCount()) + " pics");
return (photo);
}
I get Exception at `photo =
MediaStore.Images.Media.getBitmap(context.getContentResolver(),
Uri.parse(cursor.getString(cursor.getColumnIndex(eventDBcontract.ListofItem.columnpic))));
Exception is :
java.lang.SecurityException: Permission Denial: opening provider android.support.v4.content.FileProvider from ProcessRecord{6118b35 21772:lcukerd.com.instaswipe/u0a157} (pid=21772, uid=10157) that is not exported from uid 10101
I have checked other similar question but seems like they are all for some other type of problem. Help me solve it.

Instead of photoUri.toString() put image.getAbsolutePath() in your database.
If you want to read the file get the path from the database. Construct a File object en use FileInputStream. Then let BitmapFactory read the data from the stream.

Android contact book overwrites EXIF image data

In my app I'm trying to add an EXIF attribute to a contact photo when I add it to either a new or existing contact. This is so I can later check to see if it was My_App that changed the photo. I add the EXIF data like this:
private void addPhotoToExistingContact(long rawContactId, byte[] photoByteArray) {
if (photoByteArray != null) {
try {
photoByteArray = addExifDataToContactPhoto(photoByteArray);
} catch (IOException e) {
e.printStackTrace();
}
ContentValues values = new ContentValues();
values.put(ContactsContract.Data.RAW_CONTACT_ID, rawContactId);
values.put(ContactsContract.Data.MIMETYPE, ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE);
values.put(ContactsContract.CommonDataKinds.Photo.PHOTO, photoByteArray);
context.getContentResolver().insert(
ContactsContract.Data.CONTENT_URI,
values);
}
}
private byte[] addExifDataToContactPhoto(byte[] photoByteArray) throws IOException {
// Convert to temp file
File file = new File(context.getCacheDir(), "contact_photo_exif_temp_file.jpg");
if (file.exists()) {
file.delete();
}
FileOutputStream fos = new FileOutputStream(file.getAbsoluteFile());
fos.write(photoByteArray);
fos.close();
// Add EXIF data
ExifInterface exif = new ExifInterface(file.getAbsolutePath());
exif.setAttribute(MY_EXIF_TAG, MY_EXIF_VALUE);
exif.saveAttributes();
// Convert back to byte[]
byte[] photoByteArrayWithExifData = FileUtils.readFileToByteArray(file);
// Delete temp file
file.delete();
return photoByteArrayWithExifData;
}
My check for EXIF data (done at a later time) is as follows:
private boolean shouldReplaceContactPhoto(long contactId) {
ContentResolver contentResolver = context.getContentResolver();
Cursor cursor = contentResolver.query(
ContactsContract.Data.CONTENT_URI,
null,
ContactsContract.Data.MIMETYPE + " = ? AND " + ContactsContract.CommonDataKinds.StructuredName.CONTACT_ID + " = ?",
new String[] { ContactsContract.CommonDataKinds.Photo.CONTENT_ITEM_TYPE, String.valueOf(contactId) },
null);
if (cursor != null) {
if (cursor.moveToFirst()) {
long photoId = cursor.getLong(cursor.getColumnIndex(ContactsContract.Data.PHOTO_ID));
if (photoId == 0) {
cursor.close();
return true;
}
else {
// Read EXIF data to check if photo is a My_App photo
File contactPhotoTempFile = getExistingContactImageFile(contactId);
if (contactPhotoTempFile != null) {
try {
ExifInterface exif = new ExifInterface(contactPhotoTempFile.getAbsolutePath());
String swopTag = exif.getAttribute(MY_EXIF_TAG);
// Temporary image, so delete it when we're done reading EXIF data
contactPhotoTempFile.delete();
cursor.close();
// If tag is null, the photo came from a different source - return 'true'
// so it is not replaced.
return myTag != null;
} catch (IOException e) {
e.printStackTrace();
// Temporary image, so delete it when we're done reading EXIF data
contactPhotoTempFile.delete();
}
}
cursor.close();
return true;
}
}
cursor.close();
}
return true;
}
private File getExistingContactImageFile(long contactId) {
Uri contactUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, contactId);
Uri displayPhotoUri = Uri.withAppendedPath(contactUri, ContactsContract.Contacts.Photo.DISPLAY_PHOTO);
byte[] imageBytes;
try {
AssetFileDescriptor fd = context.getContentResolver().openAssetFileDescriptor(displayPhotoUri, "r");
InputStream inputStream = fd.createInputStream();
imageBytes = IOUtils.toByteArray(inputStream);
} catch (IOException e) {
return null;
}
if (imageBytes == null) {
return null;
}
File file = new File(context.getCacheDir(), "contact_photo_temp_file.jpg");
if (file.exists()) {
file.delete();
}
try {
FileOutputStream fos = new FileOutputStream(file.getPath());
fos.write(imageBytes);
fos.close();
} catch (java.io.IOException e) {
e.printStackTrace();
}
return file;
}
I've added break points and log statements and I'm almost 100% positive that the attribute is being written, but when I read the data, the property is missing. I also noticed that the orientation attribute is changed from 1 to 0 as well, which leads me to believe that Android is overwriting the EXIF data.
Is this the case, or am I doing something incorrectly? Any help at all is extremely appreciated!

Android Getting file name and path from onActivityResult

What I am trying to achieve. I have a button, when the button is clicked the app opens a file picker and the user selects a file. The app then uses a FileInputStream to read the file and generates a byte[]. I have a TextView below the button which will then simply display the byte[].length. Here is the code in the button.onClick() event:
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*");
requestFilePickerCode = parent.registerActivityResultListener(this);
try
{
parent.startActivityForResult(intent, requestFilePickerCode);
}
catch (ActivityNotFoundException e)
{
Toast.makeText(task.getParent(), "Please install a file manager", Toast.LENGTH_SHORT).show();
}
Now this code works and I have confirmed that it fires onActivityResult when the file is chosen. I simply print a Log to display data.toString() which produces the following output:
11-02 15:14:36.196 2535-2535/? V/class za.co.gpsts.gpsjobcard.utility.handlers.PebbleTypeHandlerBinary: -----> content:/com.android.providers.downloads.documents/document/1
So it seems to be getting the selected file. When I run the app and I select a file it throws my custom error:
11-02 15:14:36.196 2535-2535/? E/class za.co.gpsts.gpsjobcard.utility.handlers.PebbleTypeHandlerBinary: -----> File does not exist
This obviously indicates that I am not getting the file. Here is my code:
#Override
public boolean onActivityResult(int requestCode, int resultCode, Intent data)
{
byte[] fileContent;
// check that data is not null and assign to file if not null
if (data != null)
{
Uri uri = data.getData();
String uriString = uri.toString();
file = new File(uriString);
Log.v(PebbleTypeHandlerBinary.class.toString(), "-----> " + file.toString());
// declare file input stream and read bytes
// write to string variable to test and test output
FileInputStream fin = null;
try
{
fin = new FileInputStream(file);
fileContent = new byte[(int) file.length()];
fin.read(fileContent);
String test = new String(fileContent);
Log.v(PebbleTypeHandlerBinary.class.toString(), "=====> " + test);
}
catch (FileNotFoundException e)
{
Toast.makeText(task.getParent(), "File not found", Toast.LENGTH_SHORT).show();
Log.e(PebbleTypeHandlerBinary.class.toString(), "-----> File does not exist");
}
catch (IOException e)
{
Toast.makeText(task.getParent(), "Error reading file", Toast.LENGTH_SHORT).show();
Log.e(PebbleTypeHandlerBinary.class.toString(), "-----> Error while reading the file");
}
finally
{
// close the file input stream to stop mem leaks
try
{
if (fin != null)
{
fin.close();
}
} catch (IOException e)
{
Log.e(PebbleTypeHandlerBinary.class.toString(), "-----> Error closing the stream");
}
}
Log.v(PebbleTypeHandlerBinary.class.toString(), data.toString());
}
return false;
}
Please can you guys review my code and help me to get this working. Any help would be appreciated.

/* you can get just name and size with this method.
use Cursor .
Uri uri = data.getData();
get data from onActivityResult()
*/;
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
int nameIndex = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME);
int sizeIndex = cursor.getColumnIndex(OpenableColumns.SIZE);
cursor.moveToFirst();
String name = cursor.getString(nameIndex);
String size = Long.toString(cursor.getLong(sizeIndex));
Toast.makeText(this, "name : "+name+"\nsize : "+size, Toast.LENGTH_SHORT).show();

I managed to fix it as follows:
I used inputStream = task.getParent().getContentResolver().openInputStream(uri); to get an InputStream. Then used a ByteArrayOutputStream to write to a byte[]. See code below.
#Override
public boolean onActivityResult(int requestCode, int resultCode, Intent data)
{
Uri uri = data.getData();
byte[] fileContent;
InputStream inputStream = null;
try
{
inputStream = task.getParent().getContentResolver().openInputStream(uri);
if (inputStream != null)
{
fileContent = new byte[(int)file.length()];
inputStream.read(fileContent);
fileContent = new byte[1024];
ByteArrayOutputStream baos = new ByteArrayOutputStream();
int read;
while((read=inputStream.read(fileContent))>-1) baos.write(fileContent,0,read);
fileContent = baos.toByteArray();
baos.close();
Log.v(PebbleTypeHandlerBinary.class.toString(), "-----> Input Stream: " + inputStream);
Log.v(PebbleTypeHandlerBinary.class.toString(), "-----> Byte Array: " + fileContent.length);
}
else
{
Log.e(PebbleTypeHandlerBinary.class.toString(), "-----> Input Stream is null");
}
}
catch (FileNotFoundException e)
{
Log.e(PebbleTypeHandlerBinary.class.toString(), "-----> File not found", e);
}
catch (IOException e)
{
Log.e(PebbleTypeHandlerBinary.class.toString(), "-----> Error reading file", e);
}
finally
{
if (inputStream != null)
{
try
{
inputStream.close();
}
catch (IOException e)
{
Log.e(PebbleTypeHandlerBinary.class.toString(), "-----> Error reading file", e);
}
}
}
return false;
}
Thanks for all your help.

U can search converting uri to filepath.
GetData() retruns a uri.
But new File() need a filepath param;
Like this:
public static String getRealFilePath( final Context context, final Uri uri ) {
if ( null == uri ) return null;
final String scheme = uri.getScheme();
String data = null;
if ( scheme == null )
data = uri.getPath();
else if ( ContentResolver.SCHEME_FILE.equals( scheme ) ) {
data = uri.getPath();
} else if
( ContentResolver.SCHEME_CONTENT.equals( scheme ) ) {
Cursor cursor = context.getContentResolver().query( uri, new String[] { ImageColumns.DATA }, null, null, null );
if ( null != cursor ) {
if ( cursor.moveToFirst() ) {
int index = cursor.getColumnIndex( ImageColumns.DATA );
if ( index > -1 ) {
data = cursor.getString( index );
}
}
cursor.close();
}
}
return data;
}

1. File Name:
You can get the file name with the following method:
public static String getFileName(Context context, Uri uri) {
String result = null;
if (uri.getScheme().equals("content")) {
Cursor cursor = context.getContentResolver().query(uri, null, null, null, null);
try {
if (cursor != null && cursor.moveToFirst()) {
result = cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
}
} finally {
cursor.close();
}
}
if (result == null) {
result = uri.getPath();
int cut = result.lastIndexOf('/');
if (cut != -1) {
result = result.substring(cut + 1);
}
}
return result;
}
You will call it inside onActivityResult() and pass to it the context and uri. and you can find the uri through the intent you get from the onActivityResult which is mostly called "data", you will get the Uri from it like this:
data.data
which ".data" is the Uri.
Ex:
Utils.getFileName(this, data!!.data)
And finally it will return the file name as a String.
2. File Path:
Simply to get the file path you can get it from the data intent uri like this:
data!!.data!!.path.toString()
It will get you the path of the file as a String.

How to store thumbnails for easy retrieval

I'm currently creating thumbnails by using the ThumbnailUtils.createVideoThumbnail() method; which returns a bitmap. However, I want to store that thumbnail in a database so I can access it later and I don't have to keep recreating the thumbnails. My questions is how should I store this thumbnail in the database? Do thumbnails have filepaths? Or should I create the thumbnails and just retrieve them using the Mediastore every time I need to use it? If so how would I go about saving/storing the thumbnail so I can use the Mediastore to query it?
Thanks for your help.

If you're getting a Thumbnail object from video, you need to save it in either storage or database.
To save in database :
Bitmap thumbnailBitmap; // Get it with your approach
SQLiteDatabase writableDb; // Get it with your approach
if (thumbnailBitmap != null) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
thumbnailBitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] thumbnailBitmapBytes = stream.toByteArray();
ContentValues values = new ContentValues();
values.put("IMAGEID", "your_image_id");
values.put("BYTES", thumbnailBitmapBytes);
writableDb.insert("TABLE_NAME", null, values);
}
To get it back from database :
public static synchronized Bitmap getImage(String imageID, Context context) {
SQLiteDatabase writableDb; // Get it with your approach
Bitmap bitmap = null;
Cursor cs = null;
try {
String sql = "SELECT BYTES FROM TABLE_NAME WHERE IMAGEID = ?;";
cs = writableDb.rawQuery(sql, new String[]{imageID});
if (cs != null && cs.moveToFirst()) {
do {
byte[] bytes = cs.getBlob(0);
if (bytes != null) {
try {
bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
} catch (Exception e) {
Log.e("TAG", "Exception", e);
}
} else {
Log.e("TAG", "IMAGE NOT FOUND");
}
} while (cs.moveToNext());
}
} catch (Exception e) {
Log.e("TAG", "Exception", e);
} finally {
if (cs != null) {
cs.close();
}
}
return bitmap;
}
The database structure:
String imageTable = "CREATE TABLE TABLE_NAME("
+ "IMAGEID TEXT PRIMARY KEY, "
+ "BYTES BLOB)";

Inserting Sent MMS into sent box

I'm trying to insert a MMS into the sent database but alas I haven't been able to view it in the native android application.
my insertion code:
ContentValues values = new ContentValues();
values.put("thread_id", thread_id);
values.put("date", time);
values.put("read", true); //read status
values.put("sub", text); //mms subject
values.put("msg_box", 2); //message box. in this case outbox
Uri mmsUri = context.getContentResolver().
insert(Uri.parse("content://mms"), values);
Log.v("MMSProjectActivity", "Message saved at: " + mmsUri);
ContentValues mmsPartValue = new ContentValues();
mmsPartValue.put("ct", "image/jpeg"); //mime; for example image/jpeg
Uri picUri = picUris.get(0);
String [] fileNameSplit = picUri.toString().split("/");
String fileName = fileNameSplit[fileNameSplit.length-1] + ".jpg";
String messageId = mmsUri.getLastPathSegment().trim(); //id of MMS at content://mms
Uri partUri = Uri.parse("content://mms/" + messageId + "/part");
Uri mmsPartUri = context.getContentResolver().insert(partUri, mmsPartValue);
OutputStream os;
InputStream is;
try
{
os = context.getContentResolver().openOutputStream(mmsPartUri);
is = context.getContentResolver().openInputStream(picUris.get(0));
byte[] buffer = new byte[256];
for (int len = 0; (len = is.read(buffer)) != -1; ) {
os.write(buffer, 0, len);
}
} catch (FileNotFoundException e)
{
Log.v("MMSProjectActivity", "MMS not saved FileNotFoundException");
e.printStackTrace();
} catch (IOException e)
{
Log.v("MMSProjectActivity", "MMS not saved IOException");
e.printStackTrace();
}
Log.v("MMSProjectActivity", "MMS part value saved at: " + mmsPartUri);
anybody have any idea what am I doing wrong?

I think what you need is in this class of the source code .
Generally take a look at how they do it at google..
specifically take a look at this method
private static Uri createDraftMmsMessage(PduPersister persister, SendReq sendReq,
SlideshowModel slideshow) {
try {
PduBody pb = slideshow.toPduBody();
sendReq.setBody(pb);
Uri res = persister.persist(sendReq, Mms.Draft.CONTENT_URI);
slideshow.sync(pb);
return res;
} catch (MmsException e) {
return null;
}
}
And after creating the Draft (step one) then you update the draft to sent. by calling the other method
private static void updateDraftMmsMessage(Uri uri, PduPersister persister,
SlideshowModel slideshow, SendReq sendReq) {
if (Log.isLoggable(LogTag.APP, Log.VERBOSE)) {
LogTag.debug("updateDraftMmsMessage uri=%s", uri);
}
if (uri == null) {
Log.e(TAG, "updateDraftMmsMessage null uri");
return;
}
persister.updateHeaders(uri, sendReq);
final PduBody pb = slideshow.toPduBody();
try {
persister.updateParts(uri, pb);
} catch (MmsException e) {
Log.e(TAG, "updateDraftMmsMessage: cannot update message " + uri);
}
slideshow.sync(pb);
}
Now I know you cannot run this code from your app since you're not building in the source, or even if you are it may be a challenge to do so (even though I think that if you do build in the source if you code correctly the google code should handle the save stuff)
in any case you should be able to save mms message in the provider by following what they do in this class.
cheers...
and post your progress...