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我正在学习将图像上传到从画廊或相机 android 获取图像的服务器....

当我从画廊或相机拍摄到带有图像解码的图像视图后显示图像时，图像不会模糊...... 但在我上传后，图像就像是小尺寸和模糊......

不知道，错在哪里。无论是在解码图像上还是上传图像上

这是我的代码的一部分

解码代码

public void decodeFile(String filePath) {
    // Decode image size
    BitmapFactory.Options o = new BitmapFactory.Options();
    o.inJustDecodeBounds = true;
    BitmapFactory.decodeFile(filePath, o);

    // The new size we want to scale to
    final int REQUIRED_SIZE = 1024;

    // Find the correct scale value. It should be the power of 2.
    int width_tmp = o.outWidth, height_tmp = o.outHeight;
    int scale = 1;
    while (true) {
        if (width_tmp < REQUIRED_SIZE && height_tmp < REQUIRED_SIZE)
            break;
        width_tmp /= 2;
        height_tmp /= 2;
        scale *= 2;
    }

    // Decode with inSampleSize
    BitmapFactory.Options o2 = new BitmapFactory.Options();
    o2.inSampleSize = scale;
    bitmap = BitmapFactory.decodeFile(filePath, o2);

    imgView.setImageBitmap(bitmap);

}

上传代码

try {

            DatabaseHandler userDB = new DatabaseHandler(getApplicationContext());      
            HashMap<String, String> userDetail = userDB.getUserDetails();
            String uid= userDetail.get("uid");  

            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            bitmap.compress(CompressFormat.JPEG, 100, bos);
            byte[] data = bos.toByteArray();
            HttpClient httpClient = new DefaultHttpClient();                
            HttpPost postRequest = new HttpPost(PHP_URL);               
            ByteArrayBody bab = new ByteArrayBody(data,file_name);              
            MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
            reqEntity.addPart("uploadedfile", bab);
            postRequest.setEntity(reqEntity);
            HttpResponse response = httpClient.execute(postRequest);
            BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(),"UTF-8"));
            String sResponse;
            StringBuilder s = new StringBuilder();

            while ((sResponse = reader.readLine()) != null) {
                s = s.append(sResponse);
            }

            return s.toString().trim();

        } catch (Exception e) {

            err="error"+e.getMessage();
            Log.e(e.getClass().getName(), e.getMessage());

            return e.getMessage();
        }

上传前，图像显示在 ImageView 在此处输入图像描述

上传后，并显示在列表视图中 在此处输入图像描述

我希望任何人都可以帮助我。对不起，如果我的英语不好...

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1 回答 1

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根据方法文档，您正在 100% 压缩图像，这会降低质量

        bitmap.compress(CompressFormat.JPEG, 100, bos);

我建议使用小于 100 的值并进行调整，直到在质量和大小之间取得平衡

于 2013-10-11T10:28:52.043 回答