如何在上传到服务器之前调整图像大小

Question

如何在将图像上传到服务器之前调整其大小。有人能帮助我吗？

这是我的代码：

package com.projectappnew.kmitl_1;


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.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class Update_Image1 extends Activity {

    private static final int SELECT_FILE1 = 1;

    String selectedPath1 = "NONE";

    TextView tv1;

    TextView res;
    ProgressDialog progressDialog;
    Button buttonSelecte1;

    Button buttonUpload;
    HttpEntity resEntity;


    ////////////////
    TextView tvView1;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.update_image1);


        tvView1 = (TextView) findViewById(R.id.tvView1);

        Intent intent = getIntent();

        String sProductID = intent.getStringExtra("s_ProductID");

        tvView1.setText(" " + sProductID );


        tv1 = (TextView)findViewById(R.id.tv1);

        res = (TextView)findViewById(R.id.res);

        tv1.setText(tv1.getText() + selectedPath1);


        buttonSelecte1 = (Button)findViewById(R.id.buttonSelecte1);


        buttonUpload = (Button)findViewById(R.id.buttonUpload);
        buttonSelecte1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                openGallery(SELECT_FILE1);
            }
        });

        buttonUpload.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if(!(selectedPath1.trim().equalsIgnoreCase("NONE"))){
                    `progressDialog = ProgressDialog.show(Update_Image1.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();
            Uri selectedImageUri = data.getData();
            if (requestCode == SELECT_FILE1)
            {
                selectedPath1 = getPath(selectedImageUri);
                System.out.println("selectedPath1 : " + selectedPath1);
            }

        }
    }

    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);
        final Intent intent = getIntent();
        String sProductID = intent.getStringExtra("s_ProductID");


        String urlString = "http://projectappnew.com/kmitl/sid/update_image1.php?ProductID="+ sProductID;

        try
        {


            HttpClient client = new DefaultHttpClient();
            HttpPost post = new HttpPost(urlString);
            FileBody bin1 = new FileBody(file1);



            MultipartEntity reqEntity = new MultipartEntity();



            reqEntity.addPart("uploadedfile1", bin1);


            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();
                            Intent newActivity = new Intent(Update_Image1.this,Show_Category.class);


                            final Intent intent = getIntent();
                            String strProductID = intent.getStringExtra("ProductID");

                            newActivity.putExtra("s_ProductID", strProductID);

                            startActivity(newActivity);


                        } catch (Exception e) {
                            e.printStackTrace();
                        }
                    }
                });
            }
        }
        catch (Exception ex){
            Log.e("Debug", "error: " + ex.getMessage(), ex);
        }
    }
}

有人可以告诉你要添加什么以及在哪里？