将图像上传到服务器android

Question

我想知道哪种是将图像上传到服务器而不降低其质量的最佳方法。我在Google上搜索时发现了各种发布数据的方法。但是我不确定哪一个最好上传。我碰到多部分图像上传。使用字节数组上传图像使用base64编码的字符串上传图像。我尝试过Base64编码，如果图像的分辨率太高，它将导致OOM（内存不足）。任何解决这个问题的教程将不胜感激。提前致谢。

Answer 1

Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);

photoPickerIntent.setType("image/*");

startActivityForResult(photoPickerIntent, 1);

上面的代码从图库中选择图像

@Override

public void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == 1)

        if (resultCode == Activity.RESULT_OK) {

            Uri selectedImage = data.getData();

            String filePath = getPath(selectedImage);

            String file_extn = filePath.substring(filePath.lastIndexOf(".") + 1);

            image_name_tv.setText(filePath);

            try {

                if (file_extn.equals("img") || file_extn.equals("jpg") || file_extn.equals("jpeg") || file_extn.equals("gif") || file_extn.equals("png")) {

                    //FINE

                } else {

                    //NOT IN REQUIRED FORMAT

                }

            } catch (FileNotFoundException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        }

}

public String getPath(Uri uri) {

    String[] projection = {MediaColumns.DATA};

    Cursor cursor = managedQuery(uri, projection, null, null, null);

    column_index = cursor

            .getColumnIndexOrThrow(MediaColumns.DATA);

    cursor.moveToFirst();

    imagePath = cursor.getString(column_index);

    return cursor.getString(column_index);

}

现在使用多方表格数据过帐数据

HttpClient httpclient = new DefaultHttpClient();

HttpPost httppost = new HttpPost("LINK TO SERVER");

多部分表格数据

MultipartEntity mpEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);

if (filePath != null) {

    File file = new File(filePath);

    Log.d("EDIT USER PROFILE", "UPLOAD: file length = " + file.length());

    Log.d("EDIT USER PROFILE", "UPLOAD: file exist = " + file.exists());

    mpEntity.addPart("avatar", new FileBody(file, "application/octet"));

}

最后将数据发布到服务器

httppost.setEntity(mpEntity);

HttpResponse response = httpclient.execute(httppost);