How to send multiple images to server using MultipartEntity from android

Question

I am sending Images and Text to a PHP webservice using the following code.

try {       
    HttpClient httpClient = new DefaultHttpClient();
    HttpContext localContext = new BasicHttpContext();
    HttpPost httpPost = new HttpPost(URL);

    MultipartEntity entity = new MultipartEntity(
            HttpMultipartMode.BROWSER_COMPATIBLE);

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bitmap.compress(CompressFormat.JPEG, 75, bos);
    byte[] data = bos.toByteArray();

    entity.addPart("files[]",
            new ByteArrayBody(data, "myImage.jpg"));

    entity.addPart("message0", new StringBody(caption.getText()
            .toString()));

    httpPost.setEntity(entity);
    HttpResponse response = httpClient.execute(httpPost,
            localContext);
    BufferedReader reader = new BufferedReader(
            new InputStreamReader(
                    response.getEntity().getContent(), "UTF-8"));

    String sResponse = reader.readLine();
    return sResponse;
} catch (Exception e) {
    if (dialog.isShowing())
        dialog.dismiss();
    Toast.makeText(ImageUpload.this, e.getMessage(),
            Toast.LENGTH_LONG).show();
    Log.e(e.getClass().getName(), e.getMessage(), e);
    return null;
}
    }

It works perfectly. But this is only for one image. I want to send 5 images.

Example: Image1 - Text1 Image2 - Text2 etc..

So I am confused about how to store 5 images one by one and then on button click, send these images and text associated with them to the server.

I am getting images from the phone's camera.

Intent intent = new Intent();
            intent.setType("image/*");
            intent.setAction(Intent.ACTION_GET_CONTENT);
            startActivityForResult(
                    Intent.createChooser(intent, "Select Picture"),
                    PICK_IMAGE);


public void onActivityResult_photo(int requestCode, int resultCode,
        Intent data) {
    // TODO Auto-generated method stub
    if (resultCode == RESULT_OK) {

        if (data != null) {
            mImageCaptureUri = data.getData();
            display(mImageCaptureUri);
        } else {
            Toast.makeText(CustomTabActivity.mTabHost.getContext(),
                    "No photo selected..", Toast.LENGTH_SHORT).show();
        }

    }

}


private String display(Uri mImageCaptureUri2) {
    // TODO Auto-generated method stub
    String base64string = null;
    try {

        if (mImageCaptureUri2 != null) {

            System.gc();

            selectedImagePath = getPath(mImageCaptureUri2);

            File filenew = new File(selectedImagePath);
            int file_size = Integer.parseInt(String.valueOf(filenew
                    .length() / 1024));
            if (file_size <= 10000) {
                PD1 = ProgressDialog.show(
                        CustomTabActivity.mTabHost.getContext(), "",
                        "Loading...");
                Handler refresh = new Handler(Looper.getMainLooper());

                refresh.post(new Runnable() {
                    public void run() {

                        PD1.setCancelable(true);
                        Bitmap newbitmap;
                        newbitmap = decodeFile(selectedImagePath);
                        ByteArrayOutputStream bs = new ByteArrayOutputStream();
                        newbitmap.compress(Bitmap.CompressFormat.PNG, 50,
                                bs);
                        img.setVisibility(View.VISIBLE);
                        img.setImageBitmap(newbitmap);
                        byte[] abc = bitmapToByteArray(newbitmap);
                        if (txt_phototext.getText().toString().equals("")) {
                            submit.put(abc, "");
                        } else {
                            submit.put(abc, txt_phototext.getText()
                                    .toString());

                            // executeMultipartPost();
                        }
                        PD1.dismiss();

                    }
                });

            } else {
                AlertDialog.Builder alertbox = new AlertDialog.Builder(
                        CustomTabActivity.mTabHost.getContext());
                alertbox.setMessage("Take Image Size Less than 10 MB");
                alertbox.setNeutralButton("Ok",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface arg0,
                                    int arg1) {
                                finish();
                            }
                        });
                alertbox.show();
            }

        } else {
            System.out.println("===============NULL========");
        }

    } catch (Exception e) {
        // // TODO Auto-generated catch block
        // e.printStackTrace();
    }
    return base64string;
}


    static Bitmap decodeFile(String str) {
    try {
        // decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(str), null, o);

        // Find the correct scale value. It should be the power of 2.
        final int REQUIRED_SIZE = 70;
        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
            if (width_tmp / 2 < REQUIRED_SIZE
                    || height_tmp / 2 < REQUIRED_SIZE)
                break;
            width_tmp /= 2;
            height_tmp /= 2;
            scale++;
        }

        // decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeStream(new FileInputStream(str), null,
                o2);
    } catch (FileNotFoundException e) {
    }
    return null;
}

public static byte[] bitmapToByteArray(Bitmap bitmap) {
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    bitmap.compress(CompressFormat.PNG, 0 /* ignored for PNG */, bos);
    byte[] bitmapdata = bos.toByteArray();
    return bitmapdata;
}

Answer 1

And make sure that your directory or folder in server is Executable, Writable and Readable. I had this as the major problem. This is called 777 permission.. Believe me, this is as important as other things to consider.