How to capture a photo and immediately put it into an existing pdf?

Question

I couldn't find the solution for my issue. My MainActivity creates a pdf file, the user adds some text via EditText and closes it, no problem with that. Then I have a secondary activity that is calling the MediaStore.ACTION_IMAGE_CAPTURE to take pictures. Once a picture is taken, I'd like to know how I can get this just-captured image into that pdf.

I know I have to reopen the pdf, that is no problem, since I have the pdf file name saved in a variable. The major problem that I see is that I don't know how to programmatically get the file name of the picture, once it is automatically named after "yyyyMMdd_hhMMss.jpg". So how to get the file name from a picture taken by my secondary activity?

*EDIT - Showing code:

From MainActivity:

public class MainActivity extends Activity {

public String FILE = Environment.getExternalStorageDirectory() + "/CoManut/sample.pdf"; 

public static Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18, Font.BOLD);
public static Font redFont = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.NORMAL, BaseColor.RED);
public static Font subFont = new Font(Font.FontFamily.TIMES_ROMAN, 16, Font.BOLD);
public static Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.BOLD);

EditText estRep;
EditText sensRep;
EditText cabRep;

String estais;
String sensores;
String cabos;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    estRep = (EditText)findViewById(R.id.estaisRep);
    sensRep = (EditText)findViewById(R.id.sensoresRep);
    cabRep = (EditText)findViewById(R.id.cabosRep);
}

public void gerarPDF(View view) {

    estais = estRep.getText().toString();
    sensores = sensRep.getText().toString();
    cabos = cabRep.getText().toString();

    try {
        Document document = new Document();
        PdfWriter.getInstance(document, new FileOutputStream(FILE));
        document.open();
        addMetaData(document);
        addTitlePage(document);
        addContent(document);
        document.close();
    } catch (Exception e) {
        e.printStackTrace();
    }

    AlertDialog alertDialog = new AlertDialog.Builder(this).create();
    alertDialog.setTitle("CoManut");
    alertDialog.setMessage("Picture?");

    alertDialog.setButton("Yes", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {

            Intent intent = new Intent(MainActivity.this, PhotoActivity.class);
            startActivity(intent);
        }
    });

    alertDialog.setButton2("NO", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {

            Toast.makeText(MainActivity.this, "Thanks for using this app!", Toast.LENGTH_LONG).show();
            MainActivity.this.finish();
        }
    });
    alertDialog.setIcon(R.mipmap.ic_launcher);
    alertDialog.show();
}

private static void addMetaData(Document document) {
    document.addTitle("Image and text to PDF");
    document.addSubject("Using iText");
    document.addKeywords("Java, PDF, iText");
    document.addAuthor("Ricardo Gramowski");
    document.addCreator("Ricardo Gramowski");
}

private static void addTitlePage(Document document)
        throws DocumentException {
    Paragraph preface = new Paragraph();
    addEmptyLine(preface, 1);
    preface.add(new Paragraph("Maintenance report", catFont));
    addEmptyLine(preface, 1);
    preface.add(new Paragraph("Report generated by: " + System.getProperty("user.name") + ", " + new Date(),
            smallBold));
    addEmptyLine(preface, 3);
    preface.add(new Paragraph("This doc is important", smallBold));
    addEmptyLine(preface, 8);
    preface.add(new Paragraph("This doc has been generated by Gramowski.",
            redFont));

    document.add(preface);
    // Start a new page
    document.newPage();
}

private void addContent(Document document) throws DocumentException {
    Anchor anchor = new Anchor("Chapter 1", catFont);
    anchor.setName("Chapter 1");

    Chapter catPart = new Chapter(new Paragraph(anchor), 1);

    Paragraph subPara = new Paragraph("Results", subFont);
    Section subCatPart = catPart.addSection(subPara);

    addEmptyLine(subPara, 1);
    createTable(subCatPart);
    document.add(catPart);  
}

private void createTable(Section subCatPart)
        throws BadElementException {
    PdfPTable table = new PdfPTable(2);
    PdfPCell c1 = new PdfPCell(new Phrase("Item"));
    c1.setHorizontalAlignment(Element.ALIGN_CENTER);
    table.addCell(c1);

    c1 = new PdfPCell(new Phrase("Is that good? (OK/Not OK)"));
    c1.setHorizontalAlignment(Element.ALIGN_CENTER);
    table.addCell(c1);

    table.setHeaderRows(1);

    table.addCell("Estais da Torrre ");
    table.addCell(estais);
    table.addCell("Sensores ");
    table.addCell(sensores);
    table.addCell("Cabos ");
    table.addCell(cabos);

    subCatPart.add(table);

}

private static void addEmptyLine(Paragraph paragraph, int number) {
    for (int i = 0; i < number; i++) {
        paragraph.add(new Paragraph(" "));
    }
}
}

And my PhotoActivity:

public class PhotoActivity extends ActionBarActivity {

Button b1;
ImageView iv;
Bitmap bp;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_photo);

    b1 = (Button) findViewById(R.id.button1);
    iv = (ImageView) findViewById(R.id.imageView);

    b1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(intent, 0);
        }
    });
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap mImageBitmap = (Bitmap) extras.get("data");

        iv.setImageBitmap(mImageBitmap);

        String fpath = Environment.getExternalStorageDirectory() + "/CoManut/sample.pdf";

        File file = new File(fpath);
        if (!file.exists()) {
            try {
                file.createNewFile();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        Document document = new Document();

        try {
            PdfWriter.getInstance(document, new FileOutputStream(fpath));
        } catch (FileNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        } catch (DocumentException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

        document.open();

        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        mImageBitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
        Image myImg = null;
        try {
            myImg = Image.getInstance(stream.toByteArray());
        } catch (BadElementException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        myImg.setAlignment(Image.MIDDLE);

        try {
            document.add(myImg);
        } catch (DocumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        document.close();

    }
}

//  Button to go back to the MainActivity
public void onclickButton2(View view) {

    PhotoActivity.this.finish();

 }

@Override
protected void onDestroy() {
    super.onDestroy();
    }
}

Answer 1

Override your onActivitResult() method in your Main Activity

Here you will get the image bitmap from (Intent Data)

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap mImageBitmap = (Bitmap) extras.get("data");
    }
}

Now you have the bitmap. You can add bitmap image like below using the iText Library

 try {
       ByteArrayOutputStream stream = new ByteArrayOutputStream();
       mImageBitmap.compress(Bitmap.CompressFormat.PNG, 100, stream); // Try with Bitmap.CompressFormat.JPG also
       Image image = Image.getInstance(stream.toByteArray());
       document.add(image);

    }catch(IOException ex){
            ex.printStackTrace();
   }

Update1

Your onActivityResult() should look like this.

Note Make sure you have WRITE_EXTERNAL_STORAGE permissions in your menifest.xml file.

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap mImageBitmap = (Bitmap) extras.get("data");

        img.setImageBitmap(mImageBitmap);

        String fpath = Environment.getExternalStorageDirectory()
                .getAbsolutePath() + "/sample.pdf";
        File file = new File(fpath);
        if (!file.exists()) {
            try {
                file.createNewFile();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        Document document = new Document();

        try {
            PdfWriter.getInstance(document, new FileOutputStream(fpath));
        } catch (FileNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        } catch (DocumentException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }

        document.open();

        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        mImageBitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
        Image myImg = null;
        try {
            myImg = Image.getInstance(stream.toByteArray());
        } catch (BadElementException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        myImg.setAlignment(Image.MIDDLE);

        try {
            document.add(myImg);
        } catch (DocumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        document.close();

    }
}

This will create a sample.pdf file in your sdcard and add Image bitmap into it.

Hope this helps. I tested it here its working. :)