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(){
@Override
public 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);
}

};
    @Override
    public 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() {

@Override
public 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() {

@Override
public 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 {

@Override
public int getCount() {
return 5;
}

@Override
public Object getItem(int position) {
return null;
}

@Override
public long getItemId(int position) {
return 0;
}

@Override
public 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;
}

}

@Override
protected 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() {

@Override
public void onUploadProcess(int uploadSize) {
Message msg = Message.obtain();
msg.what = UPLOAD_IN_PROCESS;
msg.arg1 = uploadSize; 
handler.sendMessage(msg);
}

@Override
public 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);
}

@Override
public 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;
@Override
public void run() {

final boolean uploadFile = uploadUtil.uploadFile(filePathMap,fileKey,requestURL,params);

runOnUiThread(new Runnable() {

@Override
public 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;
@Override
protected 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();
}

@Override
public 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);
}

@Override
public boolean onTouchEvent(MotionEvent event) {
finish();
return super.onTouchEvent(event);
}


@Override
protected 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{

}




}