Android实现批量照片上传至服务器，拍照或者从相册选择

最近由于项目需求，需要完成批量照片上传，折腾了一段时间，终于完成了，达到了如下效果

主界面主要有GridView组成和按钮组成，当按下一个格点时，会调用相机或者相册，拍照或者选择相册照片，选择完成之后，将缩略图显示在GridView，在这里说明一下，如果GridView显示不出来，说明图片太大了，需要压缩，在我的上一篇博客，详细讲解了图片压缩的原理与过程，这里不再赘述。

下面贴上代码，

主界面：

package com.qian.pos;import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Picture;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;import com.qian.pos.util.BitmapUtil;
import com.qian.pos.util.FileUtils;
import com.qian.pos.util.PictureUtil;
import com.qian.pos.util.UploadUtil;
import com.qian.pos.util.UploadUtil.OnUploadProcessListener;
import com.qian.servletasynchttp.R;public class ImageUploadActivity extends Activity// implements OnUploadProcessListener
{private static final String TAG = "uploadImage";protected static final int TO_UPLOAD_FILE = 1;  protected static final int UPLOAD_FILE_DONE = 2;  public static final int TO_SELECT_PHOTO = 3;private static final int UPLOAD_INIT_PROCESS = 4;private static final int UPLOAD_IN_PROCESS = 5;private static String requestURL = "http://114.55.72.18/UnionPay/UploadAction";private Button uploadButton;//private ProgressBar progressBar;private String picPath = null;private ProgressDialog progressDialog;private GridView list_gv;private MyAdapter adapter;private HashMap<Integer,Bitmap> imageMap = new HashMap<Integer, Bitmap>();private HashMap<Integer,String> filePathMap = new HashMap<Integer, String>();private Handler handler = new Handler(){@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case TO_UPLOAD_FILE:toUploadFile();break;case UPLOAD_INIT_PROCESS://progressBar.setMax(msg.arg1);break;case UPLOAD_IN_PROCESS://progressBar.setProgress(msg.arg1);break;case UPLOAD_FILE_DONE:String result = "响应码："+msg.arg1+"\n响应信息："+msg.obj+"\n耗时："+UploadUtil.getRequestTime()+"秒";break;default:break;}super.handleMessage(msg);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);initView();}private void initView() {uploadButton = (Button) this.findViewById(R.id.uploadImage);uploadButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {if(picPath!=null){handler.sendEmptyMessage(TO_UPLOAD_FILE);}else{Toast.makeText(ImageUploadActivity.this, "上传的文件路径出错", Toast.LENGTH_LONG).show();}}});progressDialog = new ProgressDialog(this);list_gv = (GridView) findViewById(R.id.gv_image);adapter = new MyAdapter();list_gv.setAdapter(adapter);list_gv.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {Intent intent;switch (position) {case 0:intent = new Intent(ImageUploadActivity.this,SelectPicActivity.class);startActivityForResult(intent, 0);break;case 1:intent = new Intent(ImageUploadActivity.this,SelectPicActivity.class);startActivityForResult(intent, 1);break;case 2:intent = new Intent(ImageUploadActivity.this,SelectPicActivity.class);startActivityForResult(intent, 2);break;case 3:intent = new Intent(ImageUploadActivity.this,SelectPicActivity.class);startActivityForResult(intent, 3);break;case 4:intent = new Intent(ImageUploadActivity.this,SelectPicActivity.class);startActivityForResult(intent, 4);break;}}});}private class MyAdapter extends BaseAdapter {@Overridepublic int getCount() {return 5;}@Overridepublic Object getItem(int position) {return null;}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {View view = View.inflate(ImageUploadActivity.this, R.layout.item_grid, null);ImageView image = (ImageView) view.findViewById(R.id.item_grida_image);Iterator<Integer> iterator = imageMap.keySet().iterator();while(iterator.hasNext()) {Integer next = iterator.next();if(next.intValue() == position) {image.setImageBitmap(imageMap.get(next));}}TextView textView = (TextView) view.findViewById(R.id.tv_explain);switch (position) {case 0:textView.setText("照片1");break;case 1:textView.setText("<span style="font-family: 'Microsoft YaHei';">照片2</span>");break;case 2:textView.setText("照片3");break;case 3:textView.setText("照片4");break;case 4:textView.setText("照片5");break;default:break;}return view;}}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if(resultCode==Activity.RESULT_OK) {picPath = data.getStringExtra(SelectPicActivity.KEY_PHOTO_PATH);Log.i(TAG, "最终选择的图片="+picPath);// Toast.makeText(getApplicationContext(), "最终选择的图片="+picPath, 0).show();Bitmap bm = BitmapFactory.decodeFile(picPath);//Bitmap tempBitmap = BitmapUtil.createImageThumbnail(picPath,128);//压缩图片//Bitmap saveBitmap = BitmapUtil.createImageThumbnail(picPath,2048);Bitmap tempBitmap = PictureUtil.getSmallBitmap(picPath, 128, 128);//压缩图片Bitmap saveBitmap = PictureUtil.getSmallBitmap(picPath,1280,720);//上传服务器的bitmap 手机横着拍照String path = Environment.getExternalStorageDirectory()+ "/pos/"+requestCode+".JPEG";FileUtils.saveBitmap(saveBitmap, requestCode+"");filePathMap.put(requestCode, path);imageMap.put(requestCode, tempBitmap);//Toast.makeText(ImageUploadActivity.this, "第"+requestCode+"张图片", 0).show();//  System.out.println("imageMap"+imageMap.size());//    System.out.println("filePathMap"+filePathMap.size());adapter.notifyDataSetChanged();}super.onActivityResult(requestCode, resultCode, data);}private void toUploadFile(){progressDialog.setMessage("正在上传文件...");progressDialog.show();final String fileKey = "upload";final UploadUtil uploadUtil = UploadUtil.getInstance();;uploadUtil.setOnUploadProcessListener(new OnUploadProcessListener() {@Overridepublic void onUploadProcess(int uploadSize) {Message msg = Message.obtain();msg.what = UPLOAD_IN_PROCESS;msg.arg1 = uploadSize; handler.sendMessage(msg);}@Overridepublic void onUploadDone(int responseCode, String message) {progressDialog.dismiss();Message msg = Message.obtain();msg.what = UPLOAD_FILE_DONE;msg.arg1 = responseCode;msg.obj = message;handler.sendMessage(msg);}@Overridepublic void initUpload(int fileSize) {Message msg = Message.obtain();msg.what = UPLOAD_INIT_PROCESS;msg.arg1 = fileSize;handler.sendMessage(msg);}});  //设置监听器监听上传状态final Map<String, String> params = new HashMap<String, String>();params.put("dpnumber", "13800001111");System.out.println(filePathMap.size());new Thread(new Runnable() {int i = 0;@Overridepublic void run() {final boolean uploadFile = uploadUtil.uploadFile(filePathMap,fileKey,requestURL,params);runOnUiThread(new Runnable() {@Overridepublic void run() {if(uploadFile) {Toast.makeText(ImageUploadActivity.this, "上传成功", 0).show();progressDialog.dismiss();} else {Toast.makeText(ImageUploadActivity.this, "上传失败", 0).show();progressDialog.dismiss();}}});}   }).start();}}

选择照片界面程序：

package com.qian.pos;import com.qian.servletasynchttp.R;import android.app.Activity;
import android.content.ContentValues;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;public class SelectPicActivity extends Activity implements OnClickListener{public static final int SELECT_PIC_BY_TACK_PHOTO = 1;public static final int SELECT_PIC_BY_PICK_PHOTO = 2;public static final String KEY_PHOTO_PATH = "photo_path";private static final String TAG = "SelectPicActivity";private LinearLayout dialogLayout;private Button takePhotoBtn,pickPhotoBtn,cancelBtn;/**获取到的图片路径*/private String picPath;private Intent lastIntent ;private Uri photoUri;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.select_pic_layout);initView();}/*** 初始化加载View*/private void initView() {dialogLayout = (LinearLayout) findViewById(R.id.dialog_layout);dialogLayout.setOnClickListener(this);takePhotoBtn = (Button) findViewById(R.id.btn_take_photo);takePhotoBtn.setOnClickListener(this);pickPhotoBtn = (Button) findViewById(R.id.btn_pick_photo);pickPhotoBtn.setOnClickListener(this);cancelBtn = (Button) findViewById(R.id.btn_cancel);cancelBtn.setOnClickListener(this);lastIntent = getIntent();}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.dialog_layout:finish();break;case R.id.btn_take_photo:takePhoto();break;case R.id.btn_pick_photo:pickPhoto();break;default:finish();break;}}/*** 拍照获取图片*/private void takePhoto() {//执行拍照前，应该先判断SD卡是否存在String SDState = Environment.getExternalStorageState();if(SDState.equals(Environment.MEDIA_MOUNTED)){Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);//"android.media.action.IMAGE_CAPTURE"/**** 需要说明一下，以下操作使用照相机拍照，拍照后的图片会存放在相册中的* 这里使用的这种方式有一个好处就是获取的图片是拍照后的原图* 如果不实用ContentValues存放照片路径的话，拍照后获取的图片为缩略图不清晰*/ContentValues values = new ContentValues();  photoUri = this.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);  intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, photoUri);/**-----------------*/startActivityForResult(intent, SELECT_PIC_BY_TACK_PHOTO);}else{Toast.makeText(this,"内存卡不存在", Toast.LENGTH_LONG).show();}}/**** 从相册中取图片*/private void pickPhoto() {Intent intent = new Intent();intent.setType("image/*");intent.setAction(Intent.ACTION_GET_CONTENT);startActivityForResult(intent, SELECT_PIC_BY_PICK_PHOTO);}@Overridepublic boolean onTouchEvent(MotionEvent event) {finish();return super.onTouchEvent(event);}@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {if(resultCode == Activity.RESULT_OK){doPhoto(requestCode,data);}super.onActivityResult(requestCode, resultCode, data);}/*** 选择图片后，获取图片的路径* @param requestCode* @param data*/private void doPhoto(int requestCode,Intent data){if(requestCode == SELECT_PIC_BY_PICK_PHOTO )  //从相册取图片，有些手机有异常情况，请注意{if(data == null){Toast.makeText(this, "选择图片文件出错", Toast.LENGTH_LONG).show();return;}photoUri = data.getData();if(photoUri == null ){Toast.makeText(this, "选择图片文件出错", Toast.LENGTH_LONG).show();return;}}String[] pojo = {MediaStore.Images.Media.DATA};Cursor cursor = managedQuery(photoUri, pojo, null, null,null);   if(cursor != null ){int columnIndex = cursor.getColumnIndexOrThrow(pojo[0]);cursor.moveToFirst();picPath = cursor.getString(columnIndex);cursor.close();}Log.i(TAG, "imagePath = "+picPath);if (picPath != null/*&& (picPath.endsWith(".png") || picPath.endsWith(".PNG")|| picPath.endsWith(".jpg") || picPath.endsWith(".JPG")|| picPath.endsWith(".JPG") || picPath.endsWith(".JPEG"))*/){lastIntent.putExtra(KEY_PHOTO_PATH, picPath);setResult(Activity.RESULT_OK, lastIntent);finish();}else{//Toast.makeText(this, picPath, Toast.LENGTH_LONG).show();Toast.makeText(this, "选择图片文件不正确", Toast.LENGTH_LONG).show();}}
}

接下来是程序的核心部分UploadUtil.java

主要实现了图片的上传，上传过程的初始化监听和上传完成的监听，还有上传耗时的计算，设置的回调接口监听器在主界面可以设置，获得必要的信息。

实现的批量的过程也在其中，使用HashMap将各个图片的路径保存在其中，然后HashMap的迭代器实现循环上传，批量上传的过程中，如果图片过大会抛出异常，加载bitmap手机太多内存，没来得及释放又要加载另一张图片，单张原图上传可以实现，但不符合市场需求，一般都是批量上传。

程序的具体执行流程就不详细说了，关键部分注释已经写好了。

package com.qian.pos.util;import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.UUID;import android.content.Context;
import android.util.Log;
import android.widget.Toast;public class UploadUtil {private static UploadUtil uploadUtil;private static final String BOUNDARY =  UUID.randomUUID().toString(); // 边界标识 随机生成private static final String PREFIX = "--";private static final String LINE_END = "\r\n";private static final String CONTENT_TYPE = "multipart/form-data"; // 内容类型private UploadUtil() {}/*** 单例模式获取上传工具类* @return*/public static UploadUtil getInstance() {if (null == uploadUtil) {uploadUtil = new UploadUtil();}return uploadUtil;}private static final String TAG = "UploadUtil";private int readTimeOut = 10 * 10000; // 读取超时private int connectTimeout = 10 * 10000; // 超时时间/**** 请求使用多长时间*/private static int requestTime = 0;private static final String CHARSET = "utf-8"; // 设置编码/**** 上传成功*/public static final int UPLOAD_SUCCESS_CODE = 1;/*** 文件不存在*/public static final int UPLOAD_FILE_NOT_EXISTS_CODE = 2;/*** 服务器出错*/public static final int UPLOAD_SERVER_ERROR_CODE = 3;protected static final int WHAT_TO_UPLOAD = 1;protected static final int WHAT_UPLOAD_DONE = 2;public boolean uploadFile(HashMap<Integer,String> filePathMap, String fileKey, String RequestURL,Map<String, String> param) {String result = null;requestTime= 0;String fileName = "";long requestTime = System.currentTimeMillis();long responseTime = 0;try {//          conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");Iterator<Integer> iterator = filePathMap.keySet().iterator();boolean isOk = true;System.out.println("filePathMap.size()"+filePathMap.size());while(iterator.hasNext()) {URL url = new URL(RequestURL);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setReadTimeout(readTimeOut);conn.setConnectTimeout(connectTimeout);conn.setDoInput(true); // 允许输入流conn.setDoOutput(true); // 允许输出流conn.setUseCaches(false); // 不允许使用缓存conn.setRequestMethod("POST"); // 请求方式conn.setRequestProperty("Charset", CHARSET); // 设置编码conn.setRequestProperty("connection", "keep-alive");conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);Integer next = iterator.next();System.out.println(next+"");String filepath = filePathMap.get(next);switch (next.intValue()) {case 0:fileName = "IDPositive";break;case 1:fileName = "IDNative";break;case 2:fileName = "BusinessLicense";break;case 3:fileName = "Outdoor";break;case 4:fileName = "Indoor";break;default:break;}DataOutputStream dos = new DataOutputStream(conn.getOutputStream());StringBuffer sb = null;String params = "";if (param != null && param.size() > 0) {Iterator<String> it = param.keySet().iterator();while (it.hasNext()) {sb = null;sb = new StringBuffer();String key = it.next();String value = param.get(key);sb.append(PREFIX).append(BOUNDARY).append(LINE_END);sb.append("Content-Disposition: form-data; name=\"").append(key).append("\"").append(LINE_END).append(LINE_END);sb.append(value).append(LINE_END);params = sb.toString();Log.i(TAG, key+"="+params+"##");dos.write(params.getBytes());
//                      dos.flush();}}sb = null;params = null;sb = new StringBuffer();/*** 这里重点注意： name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件* filename是文件的名字，包含后缀名的 比如:abc.png*/sb.append(PREFIX).append(BOUNDARY).append(LINE_END);sb.append("Content-Disposition:form-data; name=\"" + fileKey+ "\"; filename=\"" + fileName + "\"" + LINE_END);//+ "\"; filename=\"" + file.getName() + "\"" + LINE_END);sb.append("Content-Type:image/pjpeg" + LINE_END); // 这里配置的Content-type很重要的 ，用于服务器端辨别文件的类型的sb.append(LINE_END);params = sb.toString();sb = null;//Log.i(TAG, filepath.getName()+"=" + params+"##");//Log.i(TAG, );dos.write(params.getBytes());/**上传文件*/InputStream is = new FileInputStream(filepath);onUploadProcessListener.initUpload((int)filepath.length());byte[] bytes = new byte[1024];int len = 0;int curLen = 0;while ((len = is.read(bytes)) != -1) {curLen += len;dos.write(bytes, 0, len);onUploadProcessListener.onUploadProcess(curLen);}is.close();is = null;dos.write(LINE_END.getBytes());byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();dos.write(end_data);dos.flush();dos.close();dos = null;
//              dos.write(tempOutputStream.toByteArray());/*** 获取响应码 200=成功 当响应成功，获取响应的流*/int res = conn.getResponseCode();responseTime = System.currentTimeMillis();this.requestTime = (int) ((responseTime-requestTime)/1000);Log.e(TAG, "response code:" + res);if (res == 200) {Log.e(TAG, "request success");InputStream input = conn.getInputStream();StringBuffer sb1 = new StringBuffer();int ss;while ((ss = input.read()) != -1) {sb1.append((char) ss);}result = sb1.toString();Log.e(TAG, "result : " + result);sb1 = null;if(fileName == "Indoor") {sendMessage(UPLOAD_SUCCESS_CODE, "上传结果："+ result);}conn.disconnect();//return true;} else {Log.e(TAG, "request error");sendMessage(UPLOAD_SERVER_ERROR_CODE,"上传失败：code=" + res);conn.disconnect();isOk = false;}}return isOk;} catch (MalformedURLException e) {sendMessage(UPLOAD_SERVER_ERROR_CODE,"上传失败：error=" + e.getMessage());e.printStackTrace();return false;} catch (IOException e) {sendMessage(UPLOAD_SERVER_ERROR_CODE,"上传失败：error=" + e.getMessage());e.printStackTrace();return false;}}private void sendMessage(int responseCode,String responseMessage){onUploadProcessListener.onUploadDone(responseCode, responseMessage);}/*** 下面是一个自定义的回调函数，用到回调上传文件是否完成* * @author shimingzheng* */public static interface OnUploadProcessListener {void onUploadDone(int responseCode, String message);void onUploadProcess(int uploadSize);void initUpload(int fileSize);}private OnUploadProcessListener onUploadProcessListener;public void setOnUploadProcessListener(OnUploadProcessListener onUploadProcessListener) {this.onUploadProcessListener = onUploadProcessListener;}public int getReadTimeOut() {return readTimeOut;}public void setReadTimeOut(int readTimeOut) {this.readTimeOut = readTimeOut;}public int getConnectTimeout() {return connectTimeout;}public void setConnectTimeout(int connectTimeout) {this.connectTimeout = connectTimeout;}/*** 获取上传使用的时间* @return*/public static int getRequestTime() {return requestTime;}public static interface uploadProcessListener{}}

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