如何使用Android的MultipartEntity将多个图像发送到服务器

Question

您好我正在使用以下代码将图像和文本发送到php webservice。

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;
        }

    }

它工作得很好。但这仅适用于一个图像发送。现在我发送5张图片和文字。

示例： - Image1 - Text1 Image2 - Text2等..

所以我对如何逐个存储5个图像感到困惑，并且在最终提交时单击将与之关联的图像和文本发送到服务器。

我只从相机获取图像。

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;
}

所以最后我被困在这个请帮助。

Answer 1

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Answer 2

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Answer 3

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Answer 4

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