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How to render PDF file from Internal storage inside Android App using PdfRenderer

I am trying to give a preview of PDF to the user before uploading it to a server. I am using PdfRenderer. I just to give the preview of the 1st page. On Start, I am calling the file chooser function that lets you select a pdf file from Internal memory, and on ActivityResult the render function is called, however, I am facing an error
I/System.out: Cursor= android.content.ContentResolver$CursorWrapperInner#a8d29d4
Uri String= content://com.adobe.scan.android.documents/document/root%3A23
File pathcontent://com.adobe.scan.android.documents/document/root%3A23
W/System.err: java.lang.IllegalArgumentException: Invalid page index
at android.graphics.pdf.PdfRenderer.throwIfPageNotInDocument(PdfRenderer.java:282)
at android.graphics.pdf.PdfRenderer.openPage(PdfRenderer.java:229)
at com.ay404.androidfileloaderreader.CustomFunc.Main2Activity.openPdfFromStorage(Main2Activity.java:56)
Here is my code:
#RequiresApi(api=Build.VERSION_CODES.LOLLIPOP)
private void openPdfFromStorage(Uri uri,String filename) throws IOException {
File fileCopy = new File(getCacheDir(), filename);//anything as the name
copyToCache(fileCopy, uri);
ParcelFileDescriptor fileDescriptor =
ParcelFileDescriptor.open(fileCopy,
ParcelFileDescriptor.MODE_READ_ONLY);
mPdfRenderer = new PdfRenderer(fileDescriptor);
mPdfPage = mPdfRenderer.openPage(1);
Bitmap bitmap = Bitmap.createBitmap(mPdfPage.getWidth(),
mPdfPage.getHeight(),
Bitmap.Config.ARGB_8888);//Not RGB, but ARGB
mPdfPage.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY);
imageView.setImageBitmap(bitmap);
}
void copyToCache(File file,Uri uri) throws IOException {
if (!file.exists()) {
InputStream input = getContentResolver().openInputStream(uri);
FileOutputStream output = new FileOutputStream(file);
byte[] buffer = new byte[1024];
int size;
while ((size = input.read(buffer)) != -1) {
output.write(buffer, 0, size);
}
input.close();
output.close();
}
}
RequiresApi(api=Build.VERSION_CODES.LOLLIPOP)
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_PDF_REQUEST && resultCode == RESULT_OK && data != null && data.getData() != null) {
filePath = data.getData();
Uri uri = data.getData();
String uriString=uri.toString();
File myFile=new File(uriString);
String displayName=null;
Cursor cursor=null;
Log.e("URI: ", uri.toString());
try {
if (uriString.startsWith("content://")) {
try {
cursor=getApplicationContext().getContentResolver().query(uri, null, null, null, null);
System.out.println("Cursor= " + cursor);
System.out.println("Uri String= " + uriString);
System.out.println("File path" + data.getData());
if (cursor != null && cursor.moveToFirst()) {
displayName=cursor.getString(cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME));
openPdfFromStorage(uri,displayName);
File imgFile=new File(String.valueOf(data.getData()));
}
} catch (IOException e) {
e.printStackTrace();
} finally {
cursor.close();
}
} else if (uriString.startsWith("file://")) {
System.out.println("Uri String= " + uriString);
System.out.println("File path" + myFile.getAbsolutePath());
displayName=myFile.getName();
try {
openPdfFromStorage(uri,displayName);
} catch (IOException e) {
e.printStackTrace();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
private void fileChoser(){
Intent intent=new Intent();
intent.setType("application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Pdf"), PICK_PDF_REQUEST);
}
#Override
protected void onStart() {
super.onStart();
fileChoser();
}
}

Found the fix, the path needs to be static, therefore, I am copying the files to cache and then opening them from cache location
private void showPdf(String base64, String filename) {
String fileName = "test_pdf ";
try {
final File dwldsPath = new File(this.getExternalFilesDir(String.valueOf(this.getCacheDir()))+"/"+filename);
Log.d("File path", String.valueOf(dwldsPath));
byte[] pdfAsBytes = Base64.decode(base64, 0);
FileOutputStream os;
os = new FileOutputStream(dwldsPath, false);
os.write(pdfAsBytes);
os.flush();
os.close();
Uri uri = FileProvider.getUriForFile(this,
BuildConfig.APPLICATION_ID + ".provider",
dwldsPath);
fileName="";
String mime = this.getContentResolver().getType(uri);
openPDF(String.valueOf(dwldsPath),fileName);
} catch(Exception e){
e.printStackTrace();
Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_SHORT).show();
}
}

How to fix my "FileNotFoundException"(No such file or directory) error with Uri-Path in Android-Studio?

I am writing an App to save files (pictures) as a certain name given by a column from csv-file. The user have to choose the csv with the filebrowser first and then the file will be copyied to my Dir-Data directory.
Everything worsk fine but it seems like the Path i get form the File src Object doesn't work with the Operation.
I expect the error obviously here(2nd Code-Box)
And sry in advance if it is obvious/easy to avoid, it is my first Android-Project ever.
I already tryed to use different Copy Functions with different parameter types and also tryed other formats such as String given by uri.toString().
//CSV Opener
public void performFileSearch() {
// ACTION_OPEN_DOCUMENT is the intent to choose a file via the system's file
// browser.
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
// Filter to only show results that can be "opened"
intent.addCategory(Intent.CATEGORY_OPENABLE);
// Filter to show only .csv using the image MIME data type.
// For all it would be "*/*".
intent.setType("text/comma-separated-values");
startActivityForResult(intent, READ_REQUEST_CODE);
}
//create paths
#Override
public void onActivityResult(int requestCode, int resultCode,
Intent resultData) {
if (requestCode == READ_REQUEST_CODE && resultCode == Activity.RESULT_OK)
{
if (resultData != null) {
Uri path = resultData.getData();
stringUri = path.getPath();
File src = new File(stringUri);
File destination = new File(getFilesDir().getPath());
try {
copyDirectoryOneLocationToAnotherLocation(src,destination);
}
catch(IOException e) {
e.printStackTrace();
System.out.print("error in upload");
}
Toast.makeText(MainActivity.this, "Path: "+stringUri , Toast.LENGTH_SHORT).show();
}
}
}
//copy-operation from StackOverflow
public static void copyDirectoryOneLocationToAnotherLocation(File sourceLocation, File targetLocation)
throws IOException {
if (sourceLocation.isDirectory()) {
if (!targetLocation.exists()) {
targetLocation.mkdir();
}
String[] children = sourceLocation.list();
for (int i = 0; i < sourceLocation.listFiles().length; i++) {
copyDirectoryOneLocationToAnotherLocation(new File(sourceLocation, children[i]),
new File(targetLocation, children[i]));
}
} else {
InputStream in = new FileInputStream(sourceLocation);
OutputStream out = new FileOutputStream(targetLocation);
// Copy the bits from instream to outstream
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
}
}
I want the choosen file to be copied in my data/data/... directory to be used later in the App.
BUT: the path i get from the objets doesn`t work for me

Thx #Mike M. , the tip with using getContentResolver() brougth me the anwser after trying around.
Finally is used an other Copy funktion and reworked the onActivityResult();
public void onActivityResult(int requestCode, int resultCode,
Intent resultData) {
if (requestCode == READ_REQUEST_CODE && resultCode == Activity.RESULT_OK)
{
if (resultData != null) {
try {
String destination = getFilesDir().getPath();
InputStream src = getContentResolver().openInputStream(resultData.getData()); // use the uri to create an inputStream
try {
convertInputStreamToFile(src, destination);
} catch (IOException e) {
e.printStackTrace();
System.out.print("error in upload");
}
} catch (FileNotFoundException ex) {
}
String destination = getFilesDir().getPath();
Toast.makeText(MainActivity.this, "Success!: CSV-File copyed to : " +destination , Toast.LENGTH_SHORT).show();
}
}
}
public static void convertInputStreamToFile(InputStream is, String destination) throws IOException
{
OutputStream outputStream = null;
try
{
File file = new File(destination + "/Student.csv");
outputStream = new FileOutputStream(file);
int read = 0;
byte[] bytes = new byte[1024];
while ((read = is.read(bytes)) != -1) {
outputStream.write(bytes, 0, read);
}
}
finally
{
if(outputStream != null)
{
outputStream.close();
}
}
}

Change an image that is store in parse through android

I am trying to update an image that is saved in parse through the android app, I am able o retrieve it and load it to the app but I am not able to save the new image that I selected to replace the old one. This is how I tried to do it and it only saves the file on the current state and not to parse. This is the code that I have currently and it is not working the way I want it to. Kindly assist.
Code is as follows
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == LOAD_IMAGE_RESULTS) {
Uri pickedImage = data.getData();
InputStream inputStream;
try {
inputStream = getContentResolver().openInputStream(pickedImage);
Bitmap selectedImages = BitmapFactory.decodeStream(inputStream);
imageSelected.setImageBitmap(selectedImages);
selectedImages = ((BitmapDrawable) imageSelected.getDrawable()).getBitmap();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
selectedImages.compress(Bitmap.CompressFormat.PNG, 5, stream);
byte[] imageRec = stream.toByteArray();
file = new ParseFile("profileUpdate.png", imageRec);
file.saveInBackground(new SaveCallback() {
#Override
public void done(ParseException e) {
if (null == e)
currentUser.put("ProfilePicture", file);
}
});
} catch (FileNotFoundException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
"Unable to load image",
Toast.LENGTH_LONG).show();
}
}
}
}

I just added the currentUser.saveInBackground(); line after currentUser.put("ProfilePicture", file); and added a currentUser.remove("ProfilePicture"); before it and it worked.

File not found error after selecting a file in android

I want to open a .pdf file in my android app.now i can browse the pdf file and after browsing the file I am getting File Not Found Error when i check the file exist or not. Now after selecting the file my selected file Uri data.getData() is like
content://com.android.externalstorage.documents/document/6333-6131:SHIDHIN.pdf
and the path when i parse using data.getData().getPath().toString() is like
/document/6333-6131:SHIDHIN.pdf Here is my code. Please Help me.
// To Browse the file
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("application/pdf");
startActivityForResult(intent, PICK_FILE_REQUEST);
After selecting file
//onActivityResult
public void onActivityResult(final int requestCode, int resultCode, Intent data) {
try {
switch (requestCode) {
case PICK_FILE_REQUEST:
if (resultCode == RESULT_OK) {
try {
Uri fileUri = data.getData();
String path = fileUri.getPath().toString();
File f = new File(path);
if (f.exists()) {
System.out.println("\n**** Uri :> "+fileUri.toString());
System.out.println("\n**** Path :> "+path.toString());
final Intent intent = new Intent(MainActivity.this, ViewPdf.class);
intent.putExtra(PdfViewerActivity.EXTRA_PDFFILENAME, path);
startActivity(intent);
} else {
System.out.println("\n**** File Not Exist :> "+path);
}
} catch (Exception e) {
ShowDialog_Ok("Error", "Cannot Open File");
}
}
break;
}
} catch (Exception e) {
}
}

This is not the answer but a workaround.
File file = new File("some_temp_path"); # you can also use app's internal cache to store the file
FileOutputStream fos = new FileOutputStream(file);
InputStream is = context.getContentResolver().openInputStream(uri);
byte[] buffer = new byte[1024];
int len = 0;
try {
len = is.read(buffer);
while (len != -1) {
fos.write(buffer, 0, len);
len = is.read(buffer);
}
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
pass this file's absolute path to your activity.

button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
File pdfFile = new File(Environment.getExternalStorageDirectory(), "Case Study.pdf");
try {
if (pdfFile.exists()) {
Uri path = Uri.fromFile(pdfFile);
Intent objIntent = new Intent(Intent.ACTION_VIEW);
objIntent.setDataAndType(path, "application/pdf");
objIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(objIntent);
} else {
Toast.makeText(MainActivity.this, "File NotFound", Toast.LENGTH_SHORT).show();
}
} catch (ActivityNotFoundException e) {
Toast.makeText(MainActivity.this, "No Viewer Application Found", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
e.printStackTrace();
}
}
});

Uploading/saving selected image with Parse as backend

Ok guys, so after spending one day trying to figure out how to upload an image to parse servers i finally decided to ask for your help. I didn't find any full example on how to do this.
What i want to be able to do is:
select image from gallery (already did that)
load into inageView (already did that)
at onClick event upload the selected picture to Parse servers (my problem)
Here you have my code snippet so far, but it's not working.
private static int RESULT_LOAD_IMAGE = 1;
mSubmitJobBTN.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
createJob(); //this method will send data to Parse
}
});
private void addJob(final String mUsernameText, String mJobNameText,
String mJobDescriptionText, String mJobPriceText) {
/*Bitmap bitmap = BitmapFactory.decodeFile("picturePath");
// Convert it to byte
ByteArrayOutputStream stream = new ByteArrayOutputStream();
// Compress image to lower quality scale 1 - 100
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] image = stream.toByteArray();
try {
image = readInFile(path);
} catch (Exception e) {
e.printStackTrace();
}*/
ParseUser user = ParseUser.getCurrentUser();
anunt.put("username", "andrei");
anunt.put("jobName", mJobNameText);
anunt.put("jobDescription", mJobDescriptionText);
anunt.put("jobPrice", mJobPriceText);
/*// Create a column named "jobPicture" and set the string
anunt.put("jobPicture", "picturePath");
// Create the ParseFile
ParseFile file = new ParseFile("picturePath", image);
// Upload the image into Parse Cloud
file.saveInBackground();
// Create a column named "ImageFile" and insert the image
anunt.put("ImageFile", file);*/
anunt.saveInBackground(new SaveCallback() {
public void done(ParseException e) {
if (e == null) {
Toast.makeText(getApplicationContext(),
"Job succesfully posted!", Toast.LENGTH_LONG)
.show();
Intent in = new Intent(getApplicationContext(),
JobsListActivity.class);
in.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(in);
finish();
} else {
Toast.makeText(getApplicationContext(),
"Sign up error, please check all the fields",
Toast.LENGTH_LONG).show();
}
}
});
}
public byte[] readInFile(String path) throws IOException {
byte[] data = null;
File file = new File(path);
InputStream input_stream = new BufferedInputStream(new FileInputStream(
file));
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
data = new byte[16384]; // 16K
int bytes_read;
while ((bytes_read = input_stream.read(data, 0, data.length)) != -1) {
buffer.write(data, 0, bytes_read);
}
input_stream.close();
return buffer.toByteArray();
}***strong text***
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK
&& null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
PreferenceManager.getDefaultSharedPreferences(this).edit()
.putString("picturePath", picturePath).commit();
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.addJob_imageView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}

You should use PHP or any server script to upload image from android to the server. Try the URL given below,
Upload Image to Server PHP Android

this is the answer!
ByteArrayOutputStream stream = new ByteArrayOutputStream();
// Compress image to lower quality scale 1 - 100
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] imagez = stream.toByteArray();
ParseFile filez = new ParseFile("androidbegin.png",
imagez);
filez.saveInBackground();
imgupload = new ParseObject("Anunturi");
imgupload.put("JobPictureName", "AndroidBegin Logo");
imgupload.put("jobPicture", filez);
imgupload.put("jobPictureName", picturePath);
imgupload.put("username", mUsernameText);
imgupload.put("jobName", mJobNameText);
imgupload.put("jobDescription", mJobDescriptionText);
imgupload.put("jobPrice", mJobPriceText);
imgupload.saveInBackground(new SaveCallback() {
public void done(ParseException e) {
if (e == null) {
Toast.makeText(getApplicationContext(),
"Job succesfully posted!",
Toast.LENGTH_LONG).show();
Intent in = new Intent(
getApplicationContext(),
JobsListActivity.class);
in.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(in);
finish();
} else {
mGoogleNow
.setVisibility(mGoogleNow.INVISIBLE);
Toast.makeText(getApplicationContext(),
"An error occured",
Toast.LENGTH_LONG).show();
}
}
});
} else {
bitmap = null;
imgupload = new ParseObject("Anunturi");
imgupload.put("username", mUsernameText);
imgupload.put("jobName", mJobNameText);
imgupload.put("jobDescription", mJobDescriptionText);
imgupload.put("jobPrice", mJobPriceText);
imgupload.put("jobPictureName", "null");
imgupload.saveInBackground(new SaveCallback() {
public void done(ParseException e) {
if (e == null) {
Toast.makeText(
getApplicationContext(),
"Job succesfully posted!",
Toast.LENGTH_LONG).show();
Intent in = new Intent(
getApplicationContext(),
JobsListActivity.class);
in.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(in);
finish();
} else {
Toast.makeText(
getApplicationContext(),
"Error while posting job...",
Toast.LENGTH_LONG).show();
}
}
});