当我从相机捕获图像失去了图像的质量？该怎么办？ [英] When i capture image from camera it lost the quality of image? What to do?

问题描述

我的点击图片代码如下：

My code of click on image is like below:

 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
 startActivityForResult(intent, 300);

活动代码结果：

if (requestCode == 300) { 
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    thumbnail.compress(Bitmap.CompressFormat.JPEG, 100, bytes);

    File destination = new File(Environment.getExternalStorageDirectory(),
            System.currentTimeMillis() + ".jpg");

    FileOutputStream fo;
    try {
        destination.createNewFile();
        fo = new FileOutputStream(destination);
        fo.write(bytes.toByteArray());
        fo.close();
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    if(number.equalsIgnoreCase("1"))
    {
        imageViewOneNumber.setImageBitmap(thumbnail);
            image1="";
            image1= getEncoded64ImageStringFromBitmap(thumbnail);
    }
    else
    {
        RelativeLayoutImage2.setVisibility(View.GONE);
        FrameImage2.setVisibility(View.VISIBLE);
        imageViewTwoNumber.setImageBitmap(thumbnail);
        image2="";
        image2= getEncoded64ImageStringFromBitmap(thumbnail);
    }
}

相机捕获演示的图片：
< a href =https://i.stack.imgur.com/kqfnS.png =nofollow noreferrer>

Image of camera capture demo:

请帮我解决这个问题。当我点击相机的照片，它减小了图像的大小。

Please help me to solve this problem. When i click the photo from camera it decrease the size of image.

推荐答案

从 docs

Android相机应用程序保存全尺寸照片b $ ba文件保存到。

The Android Camera application saves a full-size photo if you give it a file to save into. You must provide a fully qualified file name where the camera app should save the photo.

范例程式码

  File photoFile = null;
        try {
            photoFile = createImageFile();
        } catch (IOException ex) {
            // Error occurred while creating the File
            ...
        }
        // Continue only if the File was successfully created
        if (photoFile != null) {
            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                    Uri.fromFile(photoFile));
            startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
        }

String mCurrentPhotoPath;

private File createImageFile() throws IOException {
    // Create an image file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    String imageFileName = "JPEG_" + timeStamp + "_";
    File storageDir = Environment.getExternalStoragePublicDirectory(
            Environment.DIRECTORY_PICTURES);
    File image = File.createTempFile(
        imageFileName,  /* prefix */
        ".jpg",         /* suffix */
        storageDir      /* directory */
    );

    // Save a file: path for use with ACTION_VIEW intents
    mCurrentPhotoPath = "file:" + image.getAbsolutePath();
    return image;
}

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