上传前压缩相机图像

我正在使用这段代码（来自www.internetria.com http://www.internetria.com/blog/2013/04/12/android-enviar-imagenes-por-webservice/) 拍照并上传到服务器：

创建时：

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
Uri output = Uri.fromFile(new File(foto));
intent.putExtra(MediaStore.EXTRA_OUTPUT, output);
startActivityForResult(intent, TAKE_PICTURE);

活动结果：

ImageView iv = (ImageView) findViewById(R.id.imageView1);
        iv.setImageBitmap(BitmapFactory.decodeFile(foto));

        File file = new File(foto);
        if (file.exists()) {
            UploaderFoto nuevaTarea = new UploaderFoto();
            nuevaTarea.execute(foto);
        }
        else
            Toast.makeText(getApplicationContext(), "No se ha realizado la foto", Toast.LENGTH_SHORT).show();

上传者照片：

ProgressDialog pDialog;
String miFoto = "";

@Override
protected Void doInBackground(String... params) {
    miFoto = params[0];
    try { 
        HttpClient httpclient = new DefaultHttpClient();
        httpclient.getParams().setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
        HttpPost httppost = new HttpPost("http://servidor.com/up.php");
        File file = new File(miFoto);
        MultipartEntity mpEntity = new MultipartEntity();
        ContentBody foto = new FileBody(file, "image/jpeg");
        mpEntity.addPart("fotoUp", foto);
        httppost.setEntity(mpEntity);
        httpclient.execute(httppost);
        httpclient.getConnectionManager().shutdown();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

我想压缩图像，因为尺寸太大。

我不知道如何添加bitmap.compress(Bitmap.CompressFormat.JPEG, 70, fos);到我的应用程序

看看这里：ByteArrayOutputStream 到 FileBody https://stackoverflow.com/questions/7832598/bytearrayoutputstream-to-a-filebody

沿着这些思路的东西应该有效：

replace

File file = new File(miFoto);
ContentBody foto = new FileBody(file, "image/jpeg");

with

Bitmap bmp = BitmapFactory.decodeFile(miFoto)
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bmp.compress(CompressFormat.JPEG, 70, bos);
InputStream in = new ByteArrayInputStream(bos.toByteArray());
ContentBody foto = new InputStreamBody(in, "image/jpeg", "filename");

如果文件大小仍然是一个问题，除了压缩图片之外，您可能还需要缩放图片。