打开图库应用
Intent intent = new Intent(); intent.setType("image/*"); intent.setAction(Intent.ACTION_GET_CONTENT); dialog1.dismiss(); startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);选择 Goes to OnActivityResult 后
selectedImageUri = data.getData(); selectedImagePath = getPath(selectedImageUri); if(selectedImagePath==null) { Toast.makeText(MyProfileNewActivity.this, "Wrong File Please Select From Gallery", Toast.LENGTH_SHORT).show(); } else { UploadProfilePicGallery uppg=new UploadProfilePicGallery(); uppg.execute(); }**使用 AndroidMultiPartEntity 启动 Asynctask 以将图像上传到服务器
public class UploadProfilePicGallery extends AsyncTask<Void,String,String> { @Override protected String doInBackground(Void... voids) { //sourceFileUri.replace(sourceFileUri, "jagan"); // int day, month, year; int second, minute, hour; GregorianCalendar date = new GregorianCalendar(); day = date.get(Calendar.DAY_OF_MONTH); month = date.get(Calendar.MONTH); year = date.get(Calendar.YEAR); second = date.get(Calendar.SECOND); minute = date.get(Calendar.MINUTE); hour = date.get(Calendar.HOUR); String name = (hour + "" + minute + "" + second + "" + day + "" + (month + 1) + "" + year); String tag = name + ".jpg"; String fileName = selectedImagePath.replace(selectedImagePath, tag); HttpURLConnection conn = null; DataOutputStream dos = null; String lineEnd = "\r\n"; String twoHyphens = "--"; String boundary = "*****"; int bytesRead, bytesAvailable, bufferSize; byte[] buffer; int maxBufferSize = 1 * 1024 * 1024; File sourceFile = new File(selectedImagePath); try { Bitmap bmp = BitmapFactory.decodeFile(sourceFile.getAbsolutePath()); ByteArrayOutputStream bos = new ByteArrayOutputStream(); byte[] bitmapdata = bos.toByteArray(); bmp.compress(Bitmap.CompressFormat.JPEG, 10, bos); bmp.compress(Bitmap.CompressFormat.JPEG, 10, bos); bmp = getResizedBitmap(bmp, 100); bitmapdata=bos.toByteArray(); bProfileBitmap=bmp; FileOutputStream fos= null; try { fos = new FileOutputStream(sourceFile); } catch (FileNotFoundException e) { e.printStackTrace(); } try { fos.write(bitmapdata); fos.flush(); fos.close(); } catch (IOException e) { e.printStackTrace(); } } catch(OutOfMemoryError o) { return "Out Of Memory Error"; } if (!sourceFile.isFile()) { // dialog.dismiss(); Log.e("uploadFile", "Source File not exist :" + ""); result="file missing"; return result; } else { try { // open a URL connection to the Servlet File sourceFile1 = new File(selectedImagePath); FileInputStream fileInputStream = new FileInputStream(sourceFile1); URL url = new URL(URLPath+"FileUploadGallery.php"); // Open a HTTP connection to the URL conn = (HttpURLConnection) url.openConnection(); conn.setDoInput(true); // Allow Inputs conn.setDoOutput(true); // Allow Outputs conn.setUseCaches(false); // Don't use a Cached Copy conn.setRequestMethod("POST"); conn.setRequestProperty("Connection", "Keep-Alive"); conn.setRequestProperty("ENCTYPE", "multipart/form-data"); conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary); conn.setRequestProperty("uploaded_file", fileName); //=============== session.setPicName(fileName); dos = new DataOutputStream(conn.getOutputStream()); dos.writeBytes(twoHyphens + boundary + lineEnd); dos.writeBytes("Content-Disposition: form-data; name=\"uploaded_file\";filename=\"" + fileName + "\"" + lineEnd); dos.writeBytes(lineEnd); // create a buffer of maximum size bytesAvailable = fileInputStream.available(); bufferSize = Math.min(bytesAvailable, maxBufferSize); buffer = new byte[bufferSize]; // read file and write it into form... bytesRead = fileInputStream.read(buffer, 0, bufferSize); while (bytesRead > 0) { dos.write(buffer, 0, bufferSize); bytesAvailable = fileInputStream.available(); bufferSize = Math.min(bytesAvailable, maxBufferSize); bytesRead = fileInputStream.read(buffer, 0, bufferSize); } // send multipart form data necesssary after file data... dos.writeBytes(lineEnd); dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd); // Responses from the server (code and message) serverResponseCode = conn.getResponseCode(); String serverResponseMessage = conn.getResponseMessage(); Log.i("uploadFile", "HTTP Response is : " + serverResponseMessage + ": " + serverResponseCode); if (serverResponseCode == 200) { result= "File Upload Completed"; } //close the streams // fileInputStream.close(); dos.flush(); dos.close(); } catch (MalformedURLException ex) { ex.printStackTrace(); result ="MalformedURLException"; Log.e("Upload file to server", "error: " + ex.getMessage(), ex); } catch (Exception e) { e.printStackTrace(); result = "Exception"; Log.e("Upload file to server Exception", "Exception : " + e.getMessage(), e); } return result; } }注意只有当用户选择相机拍摄的图像时才会出现错误......除此之外，下载的图像可以从图库中上传。（有时崩溃有时OutOfMemoryErrorOccurs）
请给我一个解决方案，我在这个问题上工作了 3 天以上，但我无法找出问题所在........如果您有任何其他代码真的很好，请与我分享....