Android实现批量照片上传至server,拍照或者从相冊选择
Posted mfmdaoyou
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了Android实现批量照片上传至server,拍照或者从相冊选择相关的知识,希望对你有一定的参考价值。
近期因为项目需求,须要完毕批量照片上传,折腾了一段时间,最终完毕了,达到了例如以下效果
主界面主要有GridView组成和button组成,当按下一个格点时,会调用相机或者相冊,拍照或者选择相冊照片,选择完毕之后,将缩略图显示在GridView。在这里说明一下。假设GridView显示不出来。说明图片太大了。须要压缩,在我的上一篇博客,具体解说了图片压缩的原理与过程。这里不再赘述。
以下贴上代码,
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, "终于选择的图片="+picPath); // Toast.makeText(getApplicationContext(), "终于选择的图片="+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server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(); } /** * 初始化载入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() { //运行拍照前,应该先推断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" /*** * 须要说明一下。下面操作使用照相机拍照,拍照后的图片会存放在相冊中的 * 这里使用的这样的方式有一个优点就是获取的图片是拍照后的原图 * 假设不有用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(); } } /*** * 从相冊中取图片 */ 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 ) //从相冊取图片,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, "选择图片文件不对", 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毕的监听,还有上传耗时的计算。设置的回调接口监听器在主界面能够设置,获得必要的信息。
实现的批量的过程也在当中。使用HashMap将各个图片的路径保存在当中,然后HashMap的迭代器实现循环上传。批量上传的过程中,假设图片过大会抛出异常,载入bitmap手机太多内存,没来得及释放又要载入还有一张图片,单张原图上传能够实现。但不符合市场需求,一般都是批量上传。
程序的具体运行流程就不具体说了。关键部分凝视已经写好了。
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; /** * server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); // 同意输入流 conn.setDoOutput(true); // 同意输出流 conn.setUseCaches(false); // 不同意使用缓存 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server端须要key 仅仅有这个key 才干够得到相应的文件 * filename是文件的名字,包括后缀名的 比方: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非常重要的 ,用于server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); } /** * 以下是一个自己定义的回调函数。用到回调上传文件是否完毕 * * @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{ } }
以上是关于Android实现批量照片上传至server,拍照或者从相冊选择的主要内容,如果未能解决你的问题,请参考以下文章