java.lang.NullPointerException on Bundle extras = data.getExtras();

Question 1

I think its a problem of Android version 4.0 +.

Just try to remove,

File photo = new File(Environment.getExternalStorageDirectory(), "Pic.jpg");
imageUri = Uri.fromFile(photo);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);

When you call Capture intent. Now your resulted bundle onActivityResult() is not NULL.

Actually, When you are giving MediaStore.EXTRA_OUTPUT parameter to Camera Intent then camera application doesn't callback with bundled data. (I find this issues in Android 4.0 +)

You have to get the Image file from Uri which you set as MediaStore.EXTRA_OUTPUT parameter.

Update:

Or use below pathFromUri() method and pass Uri which you are set to camera intent and get the Real File Path, now for this you don't have to use Bundle extras = data.getExtras();

private String pathFromUri(Uri imageUri) {
    String[] filePathColumn = { MediaStore.Images.Media.DATA };
    Cursor cursor = getContentResolver().query(imageUri, filePathColumn,
                null, null, null);
    cursor.moveToFirst();
    int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
    String filePath = cursor.getString(columnIndex);
    return filePath ;
}

Question 2

Its Working for me:-----try in this way

   @Override
  protected void onActivityResult(int requestCode, int resultCode,
        final Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);

    switch (requestCode) {
    case 1:
        if (resultCode == RESULT_OK) {

                try {
                            Uri selectedImage = intent.getData();
                            bmpSelectedImage = getThumbnail(selectedImage);
                            set_img_camera.setImageBitmap(bmpSelectedImage);

                        } catch (IOException e) {

                            e.printStackTrace();
                        }


        }

    }

Question 3

This is my solution:

            Bitmap photo=null;
            File file = getTempFile(this);
            try {
                 photo = Media.getBitmap(getContentResolver(), Uri.fromFile(file) );

                } catch (FileNotFoundException e) {
                  e.printStackTrace();
                } catch (IOException e) {
                  e.printStackTrace();
                }

            if (photo == null) // for newest android version +-4.0
            {
                Uri selectedImage = data.getData();
                photo = Media.getBitmap(this.getContentResolver(),
                        selectedImage);
            }

and

private File getTempFile(Context context) 
    final File path = new File(Environment.getExternalStorageDirectory(),
            context.getPackageName());
    if (!path.exists()) {
        path.mkdir();
    }
    return new File(path, "image.tmp");
}

Question 4

Just check whether 'data' is null or not. If it is null, you should skip the code or it will make your app crash

if(data != null){    
        Bundle extras = data.getExtras();
                if (extras.containsKey("data")) {
                    bitmap = (Bitmap) extras.get("data");
                    // ByteArrayOutputStream baos = new ByteArrayOutputStream();
                    // bmp.compress(Bitmap.CompressFormat.PNG, 100, baos);
                    // byte[] image = baos.toByteArray();
                    if (bitmap != null) {
                        // BitmapFactory.Options options = new
                        // BitmapFactory.Options();
                        // options.inSampleSize = 5;
                        // Bitmap myImage = BitmapFactory.decodeByteArray(image, 0,
                        // image.length, options);
                        imageView.setImageBitmap(bitmap);
                    }
                } else {
                    Toast.makeText(getBaseContext(), "Please capture again", Toast.LENGTH_LONG).show();
                }
                showPopUpForUpload();
    }