Fastest Way to Upload Multiple Image to Server in android

Question

I've multiple images to upload in server and i've a method for upload single image to server. now I'm using this method to send multiple images by creating loop for each images.

Is there any fastest way to send multiple images to server?. Thanks in advance...

public int imageUpload(GroupInfoDO infoDO) {
        ObjectMapper mapper = new ObjectMapper();
        int groupId = 0;
        try {
            Bitmap bm = BitmapFactory.decodeFile(infoDO.getDpUrl());
            String fileName = infoDO.getDpUrl().substring(
                    infoDO.getDpUrl().lastIndexOf('/') + 1,
                    infoDO.getDpUrl().length());
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            bm.compress(CompressFormat.JPEG, 75, bos);
            byte[] data = bos.toByteArray();
            HttpClient httpClient = new DefaultHttpClient();
            HttpPost postRequest = new HttpPost(
                    "http://192.168.1.24:8081/REST/groupreg/upload");
            ByteArrayBody bab = new ByteArrayBody(data,
                    "application/octet-stream");
            MultipartEntity reqEntity = new MultipartEntity(
                    HttpMultipartMode.BROWSER_COMPATIBLE);
            reqEntity.addPart("uploadFile", bab);
            reqEntity.addPart("name", new StringBody(fileName));
            reqEntity.addPart("grpId", new StringBody(infoDO.getGlobalAppId()
                    + ""));
            postRequest.setEntity(reqEntity);
            HttpResponse response = httpClient.execute(postRequest);
            if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                HttpEntity httpEntity = response.getEntity();
                String json = EntityUtils.toString(httpEntity);
                Map<String, Object> mapObject = mapper.readValue(json,
                        new TypeReference<Map<String, Object>>() {
                        });
                if ((mapObject != null)
                        && (mapObject.get("status").toString()
                                .equalsIgnoreCase("SUCCESS"))) {
                    groupId = (Integer.valueOf(mapObject.get("groupId")
                            .toString()));
                }
            }
        } catch (Exception e1) {
            e1.printStackTrace();
            Log.e("log_tag", "Error in http connection " + e1.toString());
        }
        return groupId;
    } 

Answer 1

There are many methods to upload more images to the server.. one could be including two libraries: apache-mime4j-0.6.jar and httpmime-4.0.1.jar.. After that create your java main code:

import java.io.File;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class FileUploadTest extends Activity {

    private static final int SELECT_FILE1 = 1;
    private static final int SELECT_FILE2 = 2;
    String selectedPath1 = "NONE";
    String selectedPath2 = "NONE";
    TextView tv, res;
    ProgressDialog progressDialog;
    Button b1,b2,b3;
    HttpEntity resEntity;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        tv = (TextView)findViewById(R.id.tv);
        res = (TextView)findViewById(R.id.res);
        tv.setText(tv.getText() + selectedPath1 + "," + selectedPath2);
        b1 = (Button)findViewById(R.id.Button01);
        b2 = (Button)findViewById(R.id.Button02);
        b3 = (Button)findViewById(R.id.upload);
        b1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                openGallery(SELECT_FILE1);
            }
        });
        b2.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                openGallery(SELECT_FILE2);
            }
        });
        b3.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if(!(selectedPath1.trim().equalsIgnoreCase("NONE")) && !(selectedPath2.trim().equalsIgnoreCase("NONE"))){
                    progressDialog = ProgressDialog.show(FileUploadTest.this, "", "Uploading files to server.....", false);
                     Thread thread=new Thread(new Runnable(){
                            public void run(){
                                doFileUpload();
                                runOnUiThread(new Runnable(){
                                    public void run() {
                                        if(progressDialog.isShowing())
                                            progressDialog.dismiss();
                                    }
                                });
                            }
                    });
                    thread.start();
                }else{
                            Toast.makeText(getApplicationContext(),"Please select two files to upload.", Toast.LENGTH_SHORT).show();
                }
            }
        });

    }

    public void openGallery(int req_code){

        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent,"Select file to upload "), req_code);
   }

   public void onActivityResult(int requestCode, int resultCode, Intent data) {

        if (resultCode == RESULT_OK) {
            Uri selectedImageUri = data.getData();
            if (requestCode == SELECT_FILE1)
            {
                selectedPath1 = getPath(selectedImageUri);
                System.out.println("selectedPath1 : " + selectedPath1);
            }
            if (requestCode == SELECT_FILE2)
            {
                selectedPath2 = getPath(selectedImageUri);
                System.out.println("selectedPath2 : " + selectedPath2);
            }
            tv.setText("Selected File paths : " + selectedPath1 + "," + selectedPath2);
        }
    }

    public String getPath(Uri uri) {
        String[] projection = { MediaStore.Images.Media.DATA };
        Cursor cursor = managedQuery(uri, projection, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }

    private void doFileUpload(){

        File file1 = new File(selectedPath1);
        File file2 = new File(selectedPath2);
        String urlString = "http://10.0.2.2/upload_test/upload_media_test.php";
        try
        {
             HttpClient client = new DefaultHttpClient();
             HttpPost post = new HttpPost(urlString);
             FileBody bin1 = new FileBody(file1);
             FileBody bin2 = new FileBody(file2);
             MultipartEntity reqEntity = new MultipartEntity();
             reqEntity.addPart("uploadedfile1", bin1);
             reqEntity.addPart("uploadedfile2", bin2);
             reqEntity.addPart("user", new StringBody("User"));
             post.setEntity(reqEntity);
             HttpResponse response = client.execute(post);
             resEntity = response.getEntity();
             final String response_str = EntityUtils.toString(resEntity);
             if (resEntity != null) {
                 Log.i("RESPONSE",response_str);
                 runOnUiThread(new Runnable(){
                        public void run() {
                             try {
                                res.setTextColor(Color.GREEN);
                                res.setText("n Response from server : n " + response_str);
                                Toast.makeText(getApplicationContext(),"Upload Complete. Check the server uploads directory.", Toast.LENGTH_LONG).show();
                            } catch (Exception e) {
                                e.printStackTrace();
                            }
                           }
                    });
             }
        }
        catch (Exception ex){
             Log.e("Debug", "error: " + ex.getMessage(), ex);
        }
      }
}

Now your layout:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Multiple File Upload from CoderzHeaven"
    />
<Button
    android:id="@+id/Button01"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Get First File">
</Button>
<Button
    android:id="@+id/Button02"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Get Second File">
</Button>
<Button
    android:id="@+id/upload"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Start Upload">
</Button>
<TextView
    android:id="@+id/tv"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Selected File path : "
    />

<TextView
    android:id="@+id/res"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text=""
   />
</LinearLayout>

of course, include the internet permission in your manifest:

<uses-permission android:name="android.permission.INTERNET" />

And voilà. Anyway i followed this example in my case: http://www.coderzheaven.com/2011/08/16/how-to-upload-multiple-files-in-one-request-along-with-other-string-parameters-in-android/ try to see there.. There are 4 methods to upload multiple files. See which you like