I am using zxing to implement a barcode scanner in my application .
The issue is the scan result is always detecting UPC-E as the scan format and returning a wrong result. Any way to solve this ?
I am initiating the scan with the following code :
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "PRODUCT_MODE");//for Qr code, its "QR_CODE_MODE" instead of "PRODUCT_MODE"
intent.putExtra("SAVE_HISTORY", false);//this stops saving ur barcode in barcode scanner app's history
startActivityForResult(intent, 0);
and the OnActivity block is as follows :
#Override
public void onActivityResult(int requestCode, int resultCode, Intent intent)
{
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents = intent.getStringExtra("SCAN_RESULT");
String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
Log.d("SEARCH_EAN", "OK, EAN: " + contents + ", FORMAT: " + format);//this is the result
} else
if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
Barcode scanner has been installed using Barcode-4.7.3.apk
Any leads will be appreciated.
You have a number of things wrong with your example. First, you are adding core library code that you don't need, since you are integrating by Intent.
Second, for some reason you are invoking the scan twice. The second set of code does nothing. The camera param code also does nothing.
Third I think you're using a different project, not zxing for integration, since there is no setDesiredBarcodeFormats method in the project. Unless I'm forgetting this was in an old version or something.
Finally, you are scanning for all ONE_D_CODE_TYPES instead of the format you want.
github zbar code
use this code it works for me.
Related
I have an Android app that needs to let the user select some pictures from the gallery and send these pictures to the backend (together with some other data).
To allow the user to select the pictures I have the following in my Fragment:
private void pickImages() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
startActivityForResult(intent, PICK_PHOTO_FOR_AVATAR);
}
I get the result of the selected photos by the user in here:
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_PHOTO_FOR_AVATAR && resultCode == Activity.RESULT_OK) {
if (data == null) {
//Display an error
Toast.makeText(getActivity(), "There was an error getting the pictures", Toast.LENGTH_LONG).show();
return;
}
ClipData clipData = data.getClipData();
String fileName = null, extension = null;
//if ClipData is null, then we have a regular file
if (clipData == null) {
//get the selected file uri
fileName = FileUtils.getPath(getActivity(), data.getData());
//obtain the extension of the file
int index = fileName.lastIndexOf('.');
if (index > 0) {
extension = fileName.substring(index + 1);
if (extension.equals("jpg") || extension.equals("png") || extension.equals("bmp") || extension.equals("jpeg"))
isAttachedFile = true;
}
}
ArrayList<Uri> photosUris = new ArrayList<>();
//for each image in the list of images, add it to the filesUris
if (clipData != null) for (int i = 0; i < clipData.getItemCount(); i++) {
ClipData.Item item = clipData.getItemAt(i);
Uri uri = item.getUri();
switch (i) {
case 0:
picture1Uri = uri;
break;
case 1:
picture2Uri = uri;
break;
}
photosUris.add(uri);
}
else if (isAttachedFile) {
Uri uri = Uri.parse(fileName);
picture1Uri = uri;
photosUris.add(uri);
}
uris = photosUris;
if (picture1Uri != null) {
image1.setVisibility(View.VISIBLE);
image1.setImageURI(picture1Uri);
}
if (picture2Uri != null) {
image2.setVisibility(View.VISIBLE);
image2.setImageURI(picture2Uri);
}
}
I then send the list of URIs to the Presenter, where I execute my MultiPart Retrofit call to the backend:
//obtain the file(s) information of the message, if any
if (uris != null && uris.size() > 0) {
for (int i = 0; i < uris.size(); i++) {
File file = null;
//this is the corect way to encode the pictures
String encodedPath = uris.get(i).getEncodedPath();
file = new File(encodedPath);
builder.addFormDataPart("photos[]", file.getName(), RequestBody.create(MediaType.parse("multipart/form-data"), file));
}
}
MultipartBody requestBody = builder.build();
//send the newly generated ticket
Call<GenerateNewTicketResponse> generateNewTicketCall = OperatorApplication.getApiClient().generateNewTicket(Constants.BEARER + accessToken, requestBody);
The problem is that this sometimes works, sometimes doesn't. Sometimes I get the error "java.io.FileNotFoundException", which throws me in the onFailure() callback of the Retrofit call.
I found the following stackoverflow post Reading File from Uri gives java.io.FileNotFoundException: open failed: ENOENT but I'm not exactly sure how to implement the general suggestion in that response to my particular situation.
What would be the right way to get the right path towards the pictures selected by the user such that I can create files out of them and attach them in my MultiPart request?
Commonsware suggested to
Use a ContentResolver and openInputStream() to get an InputStream on the content pointed to by the Uri. Then, pass that to your decoding logic, such as BitmapFactory and its decodeStream() method.
, but I'm not sure exactly how to do that programmatically.
Any help would be appreciated.
To allow the user to select the pictures I have the following in my Fragment:
This code is using ACTION_GET_CONTENT. Particularly on Android 7.0+, generally that (and ACTION_OPEN_DOCUMENT) will return Uri values with a content scheme. Your code assumes that you are getting Uri values with a file scheme, where the path actually has meaning. Moreover, your code assumes that the user is picking files on the filesystem that you can access, and there is nothing that forces the user to do that. ACTION_GET_CONTENT can be supported by apps where their content is:
A local file on external storage
A local file on internal storage for the other app
A local file on removable storage
A local file that is encrypted and needs to be decrypted on the fly
A stream of bytes held in a BLOB column in a database
A piece of content on the Internet that needs to be downloaded by the other app first
Content that is generated on the fly
...and so on
Instead of using RequestBody.create(), use the InputStreamRequestBody from this OkHttp issue comment. You provide the same media type as before, but instead of a File (that you are incorrectly creating), you provide a ContentResolver (from getContentResolver() on a Context) and the Uri.
This blog post demonstrates how to use InputStreamRequestBody (specifically a Kotlin port of the original) to upload content in this fashion. This blog post provides another look at the same problem and a similar solution.
I have an Android app that needs to let the user select some pictures from the gallery and send these pictures to the backend (together with some other data).
To allow the user to select the pictures I have the following in my Fragment:
private void pickImages() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
startActivityForResult(intent, PICK_PHOTO_FOR_AVATAR);
}
I get the result of the selected photos by the user in here:
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_PHOTO_FOR_AVATAR && resultCode == Activity.RESULT_OK) {
if (data == null) {
//Display an error
Toast.makeText(getActivity(), "There was an error getting the pictures", Toast.LENGTH_LONG).show();
return;
}
ClipData clipData = data.getClipData();
String fileName = null, extension = null;
//if ClipData is null, then we have a regular file
if (clipData == null) {
//get the selected file uri
fileName = FileUtils.getPath(getActivity(), data.getData());
//obtain the extension of the file
int index = fileName.lastIndexOf('.');
if (index > 0) {
extension = fileName.substring(index + 1);
if (extension.equals("jpg") || extension.equals("png") || extension.equals("bmp") || extension.equals("jpeg"))
isAttachedFile = true;
}
}
ArrayList<Uri> photosUris = new ArrayList<>();
//for each image in the list of images, add it to the filesUris
if (clipData != null) for (int i = 0; i < clipData.getItemCount(); i++) {
ClipData.Item item = clipData.getItemAt(i);
Uri uri = item.getUri();
switch (i) {
case 0:
picture1Uri = uri;
break;
case 1:
picture2Uri = uri;
break;
}
photosUris.add(uri);
}
else if (isAttachedFile) {
Uri uri = Uri.parse(fileName);
picture1Uri = uri;
photosUris.add(uri);
}
uris = photosUris;
if (picture1Uri != null) {
image1.setVisibility(View.VISIBLE);
image1.setImageURI(picture1Uri);
}
if (picture2Uri != null) {
image2.setVisibility(View.VISIBLE);
image2.setImageURI(picture2Uri);
}
}
I then send the list of URIs to the Presenter, where I execute my MultiPart Retrofit call to the backend:
//obtain the file(s) information of the message, if any
if (uris != null && uris.size() > 0) {
for (int i = 0; i < uris.size(); i++) {
File file = null;
//this is the corect way to encode the pictures
String encodedPath = uris.get(i).getEncodedPath();
file = new File(encodedPath);
builder.addFormDataPart("photos[]", file.getName(), RequestBody.create(MediaType.parse("multipart/form-data"), file));
}
}
MultipartBody requestBody = builder.build();
//send the newly generated ticket
Call<GenerateNewTicketResponse> generateNewTicketCall = OperatorApplication.getApiClient().generateNewTicket(Constants.BEARER + accessToken, requestBody);
The problem is that this sometimes works, sometimes doesn't. Sometimes I get the error "java.io.FileNotFoundException", which throws me in the onFailure() callback of the Retrofit call.
I found the following stackoverflow post Reading File from Uri gives java.io.FileNotFoundException: open failed: ENOENT but I'm not exactly sure how to implement the general suggestion in that response to my particular situation.
What would be the right way to get the right path towards the pictures selected by the user such that I can create files out of them and attach them in my MultiPart request?
Commonsware suggested to
Use a ContentResolver and openInputStream() to get an InputStream on the content pointed to by the Uri. Then, pass that to your decoding logic, such as BitmapFactory and its decodeStream() method.
, but I'm not sure exactly how to do that programmatically.
Any help would be appreciated.
To allow the user to select the pictures I have the following in my Fragment:
This code is using ACTION_GET_CONTENT. Particularly on Android 7.0+, generally that (and ACTION_OPEN_DOCUMENT) will return Uri values with a content scheme. Your code assumes that you are getting Uri values with a file scheme, where the path actually has meaning. Moreover, your code assumes that the user is picking files on the filesystem that you can access, and there is nothing that forces the user to do that. ACTION_GET_CONTENT can be supported by apps where their content is:
A local file on external storage
A local file on internal storage for the other app
A local file on removable storage
A local file that is encrypted and needs to be decrypted on the fly
A stream of bytes held in a BLOB column in a database
A piece of content on the Internet that needs to be downloaded by the other app first
Content that is generated on the fly
...and so on
Instead of using RequestBody.create(), use the InputStreamRequestBody from this OkHttp issue comment. You provide the same media type as before, but instead of a File (that you are incorrectly creating), you provide a ContentResolver (from getContentResolver() on a Context) and the Uri.
This blog post demonstrates how to use InputStreamRequestBody (specifically a Kotlin port of the original) to upload content in this fashion. This blog post provides another look at the same problem and a similar solution.
I have an Android app that needs to let the user select some pictures from the gallery and send these pictures to the backend (together with some other data).
To allow the user to select the pictures I have the following in my Fragment:
private void pickImages() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
startActivityForResult(intent, PICK_PHOTO_FOR_AVATAR);
}
I get the result of the selected photos by the user in here:
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_PHOTO_FOR_AVATAR && resultCode == Activity.RESULT_OK) {
if (data == null) {
//Display an error
Toast.makeText(getActivity(), "There was an error getting the pictures", Toast.LENGTH_LONG).show();
return;
}
ClipData clipData = data.getClipData();
String fileName = null, extension = null;
//if ClipData is null, then we have a regular file
if (clipData == null) {
//get the selected file uri
fileName = FileUtils.getPath(getActivity(), data.getData());
//obtain the extension of the file
int index = fileName.lastIndexOf('.');
if (index > 0) {
extension = fileName.substring(index + 1);
if (extension.equals("jpg") || extension.equals("png") || extension.equals("bmp") || extension.equals("jpeg"))
isAttachedFile = true;
}
}
ArrayList<Uri> photosUris = new ArrayList<>();
//for each image in the list of images, add it to the filesUris
if (clipData != null) for (int i = 0; i < clipData.getItemCount(); i++) {
ClipData.Item item = clipData.getItemAt(i);
Uri uri = item.getUri();
switch (i) {
case 0:
picture1Uri = uri;
break;
case 1:
picture2Uri = uri;
break;
}
photosUris.add(uri);
}
else if (isAttachedFile) {
Uri uri = Uri.parse(fileName);
picture1Uri = uri;
photosUris.add(uri);
}
uris = photosUris;
if (picture1Uri != null) {
image1.setVisibility(View.VISIBLE);
image1.setImageURI(picture1Uri);
}
if (picture2Uri != null) {
image2.setVisibility(View.VISIBLE);
image2.setImageURI(picture2Uri);
}
}
I then send the list of URIs to the Presenter, where I execute my MultiPart Retrofit call to the backend:
//obtain the file(s) information of the message, if any
if (uris != null && uris.size() > 0) {
for (int i = 0; i < uris.size(); i++) {
File file = null;
//this is the corect way to encode the pictures
String encodedPath = uris.get(i).getEncodedPath();
file = new File(encodedPath);
builder.addFormDataPart("photos[]", file.getName(), RequestBody.create(MediaType.parse("multipart/form-data"), file));
}
}
MultipartBody requestBody = builder.build();
//send the newly generated ticket
Call<GenerateNewTicketResponse> generateNewTicketCall = OperatorApplication.getApiClient().generateNewTicket(Constants.BEARER + accessToken, requestBody);
The problem is that this sometimes works, sometimes doesn't. Sometimes I get the error "java.io.FileNotFoundException", which throws me in the onFailure() callback of the Retrofit call.
I found the following stackoverflow post Reading File from Uri gives java.io.FileNotFoundException: open failed: ENOENT but I'm not exactly sure how to implement the general suggestion in that response to my particular situation.
What would be the right way to get the right path towards the pictures selected by the user such that I can create files out of them and attach them in my MultiPart request?
Commonsware suggested to
Use a ContentResolver and openInputStream() to get an InputStream on the content pointed to by the Uri. Then, pass that to your decoding logic, such as BitmapFactory and its decodeStream() method.
, but I'm not sure exactly how to do that programmatically.
Any help would be appreciated.
To allow the user to select the pictures I have the following in my Fragment:
This code is using ACTION_GET_CONTENT. Particularly on Android 7.0+, generally that (and ACTION_OPEN_DOCUMENT) will return Uri values with a content scheme. Your code assumes that you are getting Uri values with a file scheme, where the path actually has meaning. Moreover, your code assumes that the user is picking files on the filesystem that you can access, and there is nothing that forces the user to do that. ACTION_GET_CONTENT can be supported by apps where their content is:
A local file on external storage
A local file on internal storage for the other app
A local file on removable storage
A local file that is encrypted and needs to be decrypted on the fly
A stream of bytes held in a BLOB column in a database
A piece of content on the Internet that needs to be downloaded by the other app first
Content that is generated on the fly
...and so on
Instead of using RequestBody.create(), use the InputStreamRequestBody from this OkHttp issue comment. You provide the same media type as before, but instead of a File (that you are incorrectly creating), you provide a ContentResolver (from getContentResolver() on a Context) and the Uri.
This blog post demonstrates how to use InputStreamRequestBody (specifically a Kotlin port of the original) to upload content in this fashion. This blog post provides another look at the same problem and a similar solution.
I have an Android app that needs to let the user select some pictures from the gallery and send these pictures to the backend (together with some other data).
To allow the user to select the pictures I have the following in my Fragment:
private void pickImages() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
startActivityForResult(intent, PICK_PHOTO_FOR_AVATAR);
}
I get the result of the selected photos by the user in here:
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_PHOTO_FOR_AVATAR && resultCode == Activity.RESULT_OK) {
if (data == null) {
//Display an error
Toast.makeText(getActivity(), "There was an error getting the pictures", Toast.LENGTH_LONG).show();
return;
}
ClipData clipData = data.getClipData();
String fileName = null, extension = null;
//if ClipData is null, then we have a regular file
if (clipData == null) {
//get the selected file uri
fileName = FileUtils.getPath(getActivity(), data.getData());
//obtain the extension of the file
int index = fileName.lastIndexOf('.');
if (index > 0) {
extension = fileName.substring(index + 1);
if (extension.equals("jpg") || extension.equals("png") || extension.equals("bmp") || extension.equals("jpeg"))
isAttachedFile = true;
}
}
ArrayList<Uri> photosUris = new ArrayList<>();
//for each image in the list of images, add it to the filesUris
if (clipData != null) for (int i = 0; i < clipData.getItemCount(); i++) {
ClipData.Item item = clipData.getItemAt(i);
Uri uri = item.getUri();
switch (i) {
case 0:
picture1Uri = uri;
break;
case 1:
picture2Uri = uri;
break;
}
photosUris.add(uri);
}
else if (isAttachedFile) {
Uri uri = Uri.parse(fileName);
picture1Uri = uri;
photosUris.add(uri);
}
uris = photosUris;
if (picture1Uri != null) {
image1.setVisibility(View.VISIBLE);
image1.setImageURI(picture1Uri);
}
if (picture2Uri != null) {
image2.setVisibility(View.VISIBLE);
image2.setImageURI(picture2Uri);
}
}
I then send the list of URIs to the Presenter, where I execute my MultiPart Retrofit call to the backend:
//obtain the file(s) information of the message, if any
if (uris != null && uris.size() > 0) {
for (int i = 0; i < uris.size(); i++) {
File file = null;
//this is the corect way to encode the pictures
String encodedPath = uris.get(i).getEncodedPath();
file = new File(encodedPath);
builder.addFormDataPart("photos[]", file.getName(), RequestBody.create(MediaType.parse("multipart/form-data"), file));
}
}
MultipartBody requestBody = builder.build();
//send the newly generated ticket
Call<GenerateNewTicketResponse> generateNewTicketCall = OperatorApplication.getApiClient().generateNewTicket(Constants.BEARER + accessToken, requestBody);
The problem is that this sometimes works, sometimes doesn't. Sometimes I get the error "java.io.FileNotFoundException", which throws me in the onFailure() callback of the Retrofit call.
I found the following stackoverflow post Reading File from Uri gives java.io.FileNotFoundException: open failed: ENOENT but I'm not exactly sure how to implement the general suggestion in that response to my particular situation.
What would be the right way to get the right path towards the pictures selected by the user such that I can create files out of them and attach them in my MultiPart request?
Commonsware suggested to
Use a ContentResolver and openInputStream() to get an InputStream on the content pointed to by the Uri. Then, pass that to your decoding logic, such as BitmapFactory and its decodeStream() method.
, but I'm not sure exactly how to do that programmatically.
Any help would be appreciated.
To allow the user to select the pictures I have the following in my Fragment:
This code is using ACTION_GET_CONTENT. Particularly on Android 7.0+, generally that (and ACTION_OPEN_DOCUMENT) will return Uri values with a content scheme. Your code assumes that you are getting Uri values with a file scheme, where the path actually has meaning. Moreover, your code assumes that the user is picking files on the filesystem that you can access, and there is nothing that forces the user to do that. ACTION_GET_CONTENT can be supported by apps where their content is:
A local file on external storage
A local file on internal storage for the other app
A local file on removable storage
A local file that is encrypted and needs to be decrypted on the fly
A stream of bytes held in a BLOB column in a database
A piece of content on the Internet that needs to be downloaded by the other app first
Content that is generated on the fly
...and so on
Instead of using RequestBody.create(), use the InputStreamRequestBody from this OkHttp issue comment. You provide the same media type as before, but instead of a File (that you are incorrectly creating), you provide a ContentResolver (from getContentResolver() on a Context) and the Uri.
This blog post demonstrates how to use InputStreamRequestBody (specifically a Kotlin port of the original) to upload content in this fashion. This blog post provides another look at the same problem and a similar solution.
I have a little bit strange question: this time everything works, but I can't understand why.
AFAIK it's possible to mount more than one sd card. Everything will be mounted to /mnt directory. (is it true?)
On my device there is only one sd card which mounted to /mnt/sdcard. And in my application I open files from it. I'm using next code:
private void open() {
// get file extension
String extension = "";
int dotIndex = downloadedFile.lastIndexOf('.');
if (dotIndex != -1) {
extension = downloadedFile.substring(dotIndex + 1, downloadedFile.length());
}
// create an intent
Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
Uri data = Uri.fromFile(new File(downloadedFile));
String type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
if (type == null || type.length() == 0) {
// if there is no acceptable mime type
type = "application/octet-stream";
}
intent.setDataAndType(data, type);
// get the list of the activities which can open the file
List resolvers = context.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
if (resolvers.isEmpty()) {
(new AlertDialog.Builder(context)
.setMessage(R.string.AttachmentUnknownFileType)
.setNeutralButton(R.string.NeutralButtonText, null)
.create()).show();
} else {
context.startActivity(intent);
}
}
Actually downloadedFile variable has value like file:///sdcard/mydir/myfile.txt. But the code works. Why? How Android understand what /sdcard/... is the same as /mnt/sdcard/...?
And main question: what happened if sd card will be mounted to other dir (for exmaple, /mnt/another-sd/ or even /media/sd)? What if more than one sd cards will be mounted: how android understand what card to use?
Thank you for any help! Have a good day!
It's simple android configueres the mounting over a settings file on phone boot so if there are mor sdcards Android will simply prefer one of them to set as
/sdcard/
so when the mount settings change your code is simply useless you can only hope the settings being untouched .
Every company that procuces Android smartphones use the "sdcard" path even custom roms like use it