Android开发之将拍摄的图片传至服务器

 package com.example.oldtab;

 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.net.HttpURLConnection;
 import java.net.MalformedURLException;
 import java.net.URL;

 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Environment;
 import android.provider.MediaStore;
 import android.support.v7.app.ActionBarActivity;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.ImageView;

 public class Group extends ActionBarActivity {
     private static final int TAKE_PICTURE = 0x0;

     private static final String TAG_SEP = "----ninesofttestpostfile";

     private ImageView imageview;
     private Button button;
     private Uri outputFileUri;
     private Bitmap bitmap;
     private File file;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_group);

         imageview = (ImageView) findViewById(R.id.imageView1);
         button = (Button) findViewById(R.id.button1);

         button.setOnClickListener(new OnClickListener() {

             @Override
             public void onClick(View v) {
                 File file = new File(Environment.getExternalStorageDirectory(),
                         "test.jpg");
                 outputFileUri = Uri.fromFile(file);

                 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                 intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);

                 startActivityForResult(intent, TAKE_PICTURE);
             }

         });

     }

     @Override
     protected void onDestroy() {
         if (bitmap != null && !bitmap.isRecycled()) {
             bitmap.recycle();
         }
         super.onDestroy();
     }

     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (requestCode == TAKE_PICTURE) {
             if (data == null) {
                 if (bitmap != null) {
                     if (!bitmap.isRecycled()) {
                         bitmap.recycle();
                     }
                 }
                 int width = 1024;
                 int height = 768;

                 file = new File(Environment.getExternalStorageDirectory(),
                         "test.jpg");

                 outputFileUri = Uri.fromFile(file);

                 BitmapFactory.Options factoryoption = new BitmapFactory.Options();
                 factoryoption.inJustDecodeBounds = true;

                 BitmapFactory
                         .decodeFile(outputFileUri.getPath(), factoryoption);

                 int outwidth = factoryoption.outWidth;
                 int outheight = factoryoption.outHeight;

                 int scale = Math.min(outwidth / width, outheight / height);

                 factoryoption.inJustDecodeBounds = false;
                 factoryoption.inSampleSize = scale;
                 factoryoption.inPurgeable = true;

                 bitmap = BitmapFactory.decodeFile(outputFileUri.getPath(),
                         factoryoption);
                 imageview.setImageBitmap(bitmap);

                 saveToService();
             }
         }
         super.onActivityResult(requestCode, resultCode, data);
     }

     private void saveToService() {
         new Thread(new Runnable() {

             @Override
             public void run() {
                 try {
                     URL url = new URL("http://172.16.101.79/PostFile.ashx");
                     HttpURLConnection conn = (HttpURLConnection) url
                             .openConnection();
                     conn.setRequestMethod("POST");
                     conn.setRequestProperty("Connection", "keep-alive");
                     conn.setRequestProperty("Accept", "*/*");
                     conn.setRequestProperty("Content-Type",
                             "multipart/form-data;boundary=" + TAG_SEP);
                     conn.setDoOutput(true);
                     OutputStream out = conn.getOutputStream();
                     out.write(("--" + TAG_SEP + "\r\n").getBytes());
                     out.write(("Content-Disposition: form-data; name=\"postfile\"; filename=\"test.jpg\"\r\n")
                             .getBytes());
                     out.write(("Content-Type:image/jpeg\r\n\r\n").getBytes());
                     ByteArrayOutputStream fr = new ByteArrayOutputStream();
                     bitmap.compress(Bitmap.CompressFormat.JPEG, 50, fr);
                     out.write(fr.toByteArray());
                     out.write(("\r\n\r\n--" + TAG_SEP + "--\r\n").getBytes());
                     out.flush();
                     out.close();
                     conn.getResponseCode();
                     fr.close();

                 } catch (MalformedURLException e) {
                     e.printStackTrace();
                 } catch (IOException e) {
                     e.printStackTrace();
                 }
             }

         }).start();

     }
 }

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".Group" >

     <ImageView
         android:id="@+id/imageView1"
         android:layout_width="500dp"
         android:layout_height="300dp" />

     <Button
         android:id="@+id/button1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_below="@+id/imageView1"
         android:layout_centerHorizontal="true"
         android:layout_marginTop="50dp"
         android:text="Button" />

 </RelativeLayout>