How to get image from file manager and convert it to byte array to store in sqlite in Android

Question

i want to convert image to byte array.

my code is:

private Uri mImageCaptureUri;
private ImageView mImageView;

private static final int PICK_FROM_CAMERA = 1;
private static final int PICK_FROM_FILE = 2;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_image_picker_activty);
    final String[] items = new String[]{"From Camera", "From SD Card"};
    ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.select_dialog_item, items);
    AlertDialog.Builder builder = new AlertDialog.Builder(this);

    builder.setTitle("Select Image");
    builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int item) {
            if (item == 0) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                File file = new File(Environment.getExternalStorageDirectory(),
                        "tmp_avatar_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
                mImageCaptureUri = Uri.fromFile(file);

                try {
                    intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
                    intent.putExtra("return-data", true);

                    startActivityForResult(intent, PICK_FROM_CAMERA);
                } catch (Exception e) {
                    e.printStackTrace();
                }

                dialog.cancel();
            } else {
                Intent intent = new Intent();

                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);

                startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_FILE);
            }
        }
    });

    final AlertDialog dialog = builder.create();

    mImageView = (ImageView) findViewById(R.id.iv_pic);

    (findViewById(R.id.btn_choose)).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            dialog.show();
        }
    });
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        Picasso.with(this).load(data.getData()).into(mImageView);

}

i dont know how do i get image bitmap from this and convert to byte array

i want to store the image byte array in sqlite database. thanks in advance. plzz help me with this

score 1 · Accepted Answer · answered Mar 02 '17 at 15:15

1

Step #1: Delete getRealPathFromURI().

Step #2: Delete the entire current contents of your onActivityResult() method.

Step #3: Use an image-loading library, such as Picasso, to load the image into your ImageView in a revised onActivityResult() method:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  if (resultCode==RESULT_OK) {
    Picasso.with(this).load(data.getData()).into(mImageView);
  }
}

answered Mar 02 '17 at 15:15

CommonsWare

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what if i want to store the image in my database? – nishant Mar 02 '17 at 15:24
@nishant: Picasso also lets you set a callback to get access to the `Bitmap` that it creates. Or, fork your own background thread, which uses `ContentResolver` and `openInputStream()` to get an `InputStream` on the content identified by the `Uri`. Copy that data into a `ByteArrayOutputStream`, and use the resulting `byte[]` in your database I/O. – CommonsWare Mar 02 '17 at 16:01
how do i set a callback to get access to the Bitmap? – nishant Mar 02 '17 at 17:07
@nishant: http://stackoverflow.com/questions/20181491/use-picasso-to-get-a-callback-with-a-bitmap – CommonsWare Mar 02 '17 at 17:12

score 0 · Answer 2 · answered Mar 02 '17 at 15:28

0

 mImageView.setImageBitmap(BitmapFactory.decodeStream(
   getContentResolver().openInputStream(data.getData())));

You dont even need a library.

answered Mar 02 '17 at 15:28

greenapps

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what if i want to store the image in my database? @greenapps – nishant Mar 02 '17 at 15:30
Then do what CW told you to do. – greenapps Mar 02 '17 at 16:07

How to get image from file manager and convert it to byte array to store in sqlite in Android

2 Answers2