編輯：關於Android編程
<喎?/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHA+1ve958Pm1vfSqtPQR3JpZFZpZXfX6bPJus2wtMWl1+mzyaOstbGwtM/C0ru49iYjMjY2ODQ7tePKsaOsu+G199PDz+C7+rvy1d/P4LLho6zFxNXVu/LV39Gh1PHP4LLh1dXGrKOs0aHU8c3qs8nWrrrzo6y9q8v1wtTNvM/Uyr7U2kdyaWRWaWV3o6zU2tXiwO/LtcP30rvPwqOsyOe5+0dyaWRWaWV3z9TKvrK7s/bAtKOsy7XD9828xqzMq7TzwcujrNDo0qrRucv1o6zU2s7StcTJz9K7xqqyqb/No6zP6s+4vbK94sHLzbzGrNG5y/W1xNStwO3T67n9s8yjrNXiwO+yu9TZ17jK9qGjPC9wPgo8cD7PwsPmzPnJz7T6wuujrDwvcD4KPHA+1ve958Pmo7o8L3A+CjxwPjxwcmUgY2xhc3M9"brush:java;">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
選擇照片界面程序：
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;
/**獲取到的圖片路徑*/
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();
}
/**
* 初始化加載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;
}
}
/**
* 拍照獲取圖片
*/
private void takePhoto() {
//執行拍照前，應該先判斷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"
/***
* 需要說明一下，以下操作使用照相機拍照，拍照後的圖片會存放在相冊中的
* 這裡使用的這種方式有一個好處就是獲取的圖片是拍照後的原圖
* 如果不實用ContentValues存放照片路徑的話，拍照後獲取的圖片為縮略圖不清晰
*/
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,"內存卡不存在", Toast.LENGTH_LONG).show();
}
}
/***
* 從相冊中取圖片
*/
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);
}
/**
* 選擇圖片後，獲取圖片的路徑
* @param requestCode
* @param data
*/
private void doPhoto(int requestCode,Intent data)
{
if(requestCode == SELECT_PIC_BY_PICK_PHOTO ) //從相冊取圖片，有些手機有異常情況，請注意
{
if(data == null)
{
Toast.makeText(this, "選擇圖片文件出錯", Toast.LENGTH_LONG).show();
return;
}
photoUri = data.getData();
if(photoUri == null )
{
Toast.makeText(this, "選擇圖片文件出錯", 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, "選擇圖片文件不正確", Toast.LENGTH_LONG).show();
}
}
}
主要實現了圖片的上傳，上傳過程的初始化監聽和上傳完成的監聽，還有上傳耗時的計算，設置的回調接口監聽器在主界面可以設置，獲得必要的信息。
實現的批量的過程也在其中，使用HashMap將各個圖片的路徑保存在其中，然後HashMap的迭代器實現循環上傳，批量上傳的過程中，如果圖片過大會拋出異常，加載bitmap手機太多內存，沒來得及釋放又要加載另一張圖片，單張原圖上傳可以實現，但不符合市場需求，一般都是批量上傳。
程序的具體執行流程就不詳細說了，關鍵部分注釋已經寫好了。
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(); // 邊界標識 隨機生成
private static final String PREFIX = "--";
private static final String LINE_END = "\r\n";
private static final String CONTENT_TYPE = "multipart/form-data"; // 內容類型
private UploadUtil() {
}
/**
* 單例模式獲取上傳工具類
* @return
*/
public static UploadUtil getInstance() {
if (null == uploadUtil) {
uploadUtil = new UploadUtil();
}
return uploadUtil;
}
private static final String TAG = "UploadUtil";
private int readTimeOut = 10 * 10000; // 讀取超時
private int connectTimeout = 10 * 10000; // 超時時間
/***
* 請求使用多長時間
*/
private static int requestTime = 0;
private static final String CHARSET = "utf-8"; // 設置編碼
/***
* 上傳成功
*/
public static final int UPLOAD_SUCCESS_CODE = 1;
/**
* 文件不存在
*/
public static final int UPLOAD_FILE_NOT_EXISTS_CODE = 2;
/**
* 服務器出錯
*/
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 filePathMap, String fileKey, String RequestURL,
Map 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 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); // 允許輸入流
conn.setDoOutput(true); // 允許輸出流
conn.setUseCaches(false); // 不允許使用緩存
conn.setRequestMethod("POST"); // 請求方式
conn.setRequestProperty("Charset", CHARSET); // 設置編碼
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 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();
/**
* 這裡重點注意： name裡面的值為服務器端需要key 只有這個key 才可以得到對應的文件
* filename是文件的名字，包含後綴名的 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); // 這裡配置的Content-type很重要的 ，用於服務器端辨別文件的類型的
sb.append(LINE_END);
params = sb.toString();
sb = null;
//Log.i(TAG, filepath.getName()+"=" + params+"##");
//Log.i(TAG, );
dos.write(params.getBytes());
/**上傳文件*/
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());
/**
* 獲取響應碼 200=成功 當響應成功，獲取響應的流
*/
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, "上傳結果："+ result);
}
conn.disconnect();
//return true;
} else {
Log.e(TAG, "request error");
sendMessage(UPLOAD_SERVER_ERROR_CODE,"上傳失敗：code=" + res);
conn.disconnect();
isOk = false;
}
}
return isOk;
} catch (MalformedURLException e) {
sendMessage(UPLOAD_SERVER_ERROR_CODE,"上傳失敗：error=" + e.getMessage());
e.printStackTrace();
return false;
} catch (IOException e) {
sendMessage(UPLOAD_SERVER_ERROR_CODE,"上傳失敗：error=" + e.getMessage());
e.printStackTrace();
return false;
}
}
private void sendMessage(int responseCode,String responseMessage)
{
onUploadProcessListener.onUploadDone(responseCode, responseMessage);
}
/**
* 下面是一個自定義的回調函數，用到回調上傳文件是否完成
*
* @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;
}
/**
* 獲取上傳使用的時間
* @return
*/
public static int getRequestTime() {
return requestTime;
}
public static interface uploadProcessListener{
}
}
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