从相机捕获时图像/图像质量低

I have one problem. When I try to get picture from camera, the quality is very low. At first, capture the picture using camera, than save to the directory and at the same time get that picture and show in my app.The picture saved inside directory is a fine quality but when I get it from directory, the quality is low. below is my sample code :

我有一个问题。当我试图从相机拍摄照片时，质量非常低。首先，使用相机捕捉图片，而不是保存到目录，同时获取该图片并在我的应用程序中显示。目录中保存的图片质量很好但是当我从目录中获取时，质量很低。下面是我的示例代码：

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

    if (requestCode == CAMERA_PIC_REQUEST) {  

        Bitmap thumbnail = (Bitmap) intent.getExtras().get("data");

        if (g==1)
        {
            ImageView myImage = (ImageView) findViewById(R.id.img5);
            myImage.setImageBitmap(thumbnail);

            View a = findViewById(R.id.img5);
            a.setVisibility(View.VISIBLE);

            ByteArrayOutputStream stream = new ByteArrayOutputStream();
            thumbnail.compress(Bitmap.CompressFormat.JPEG, 100, stream);

            byteArray1 = stream.toByteArray();
        }
}

any solution/suggestion? Thanks :)

任何解决方案/建议？谢谢：）

Solved

解决了

The problem solved when I follow the code given by Antrromet below

当我按照下面的Antrromet给出的代码时，问题就解决了

2 个解决方案

#1

I have used the following code and this works perfectly fine for me.

我使用了以下代码，这对我来说非常好。

            values = new ContentValues();
            values.put(MediaStore.Images.Media.TITLE, "New Picture");
            values.put(MediaStore.Images.Media.DESCRIPTION, "From your Camera");
            imageUri = getContentResolver().insert(
                    MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
            startActivityForResult(intent, PICTURE_RESULT);

and also

并且

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (requestCode) {

        case PICTURE_RESULT:
            if (requestCode == PICTURE_RESULT)
                if (resultCode == Activity.RESULT_OK) {
                    try {
                        thumbnail = MediaStore.Images.Media.getBitmap(
                                getContentResolver(), imageUri);
                        imgView.setImageBitmap(thumbnail);
                        imageurl = getRealPathFromURI(imageUri);    
                    } catch (Exception e) {
                        e.printStackTrace();
                    }

                }
        }
    }

and

和

public String getRealPathFromURI(Uri contentUri) {
        String[] proj = { MediaStore.Images.Media.DATA };
        Cursor cursor = managedQuery(contentUri, proj, null, null, null);
        int column_index = cursor
                .getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }

#2

I will give you something that work for me. I asked the same !

我会给你一些适合我的东西。我问的一样！

Solution to save a picture in a specific folder without lost quality

将图片保存在特定文件夹中而不会丢失质量的解决方案

I FOUND THE SOLUTION:

我找到了解决方案：

//Create a new folder code:

//创建一个新的文件夹代码：

 String path = String.valueOf(Environment.getExternalStorageDirectory()) + "/your_name_folder";
            try {
                File ruta_sd = new File(path);
                File folder = new File(ruta_sd.getAbsolutePath(), nameFol);
                boolean success = true;
                if (!folder.exists()) {
                    success = folder.mkdir();
                }
                if (success) {
                    Toast.makeText(MainActivity.this, "Carpeta Creada...", Toast.LENGTH_SHORT).show();
                }
            } catch (Exception ex) {
                Log.e("Carpetas", "Error al crear Carpeta a tarjeta SD");
            }

            Intent i = new Intent(MainActivity.this, MainActivity.class);
            startActivity(i);
            finish();//agregue este

//Method to take a Picture

//拍摄照片的方法

public void clickFoto(View view) {
        takePic();
    }

//takePic()

// takePic（）

 private void takePic() {
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
        *File file = new File(Environment.getExternalStorageDirectory(), "/your_name_folder/a" + "/photo_" + timeStamp + ".png");*
        imageUri = Uri.fromFile(file);

        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
        startActivityForResult(intent, PICTURE_RESULT);
    }

//onActivityResult

// onActivityResult

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

            case PICTURE_RESULT:
                if (requestCode == PICTURE_RESULT)
                    if (resultCode == Activity.RESULT_OK) {
                        try {
                            Bitmap thumbnail = MediaStore.Images.Media.getBitmap(
                                    getContentResolver(), imageUri);
                            imgFoto.setImageBitmap(thumbnail);
                            imageurl = getRealPathFromURI(imageUri);
                        } catch (Exception e) {
                            e.printStackTrace();
                        }

                    }
        }
    }

// getRealPathFromUri

// getRealPathFromUri

public String getRealPathFromURI(Uri contentUri) {
        String[] proj = {MediaStore.Images.Media.DATA};
        Cursor cursor = managedQuery(contentUri, proj, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }

#1