当我的预览开始时,一切都看起来非常清晰和伟大,但在拍摄照片并显示最终结果后,图像看起来并不好看.

这是我的surfaceChanged()方法的样子 – 我在哪里设置一些参数：

public void surfaceChanged(SurfaceHolder holder,int format,int w,int h) {
        Log.e(TAG,"surfaceChanged");
        if (mPreviewRunning) {
            mCamera.stopPreview();
        }

        Camera.Parameters p = mCamera.getParameters();
        List<Size> sizes = p.getSupportedPictureSizes();

 System.out.println("Lista de parametrii este urmatoarea:"+sizes);
       Size   size = sizes.get(7);
      p.setPictureSize(size.width,size.height);
       mCamera.setParameters(p);
        try {
            mCamera.setPreviewDisplay(holder);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        mCamera.startPreview();
        mPreviewRunning = true;
    }

Coudl有人告诉我提高照片质量的方法是什么.谢谢！

编辑：

在拍摄照片的活动A中,我使用一个包将图像发送到另一个活动B,我将其存储在SDCARD上.这就是我的工作方式：

活动A：

Camera.PictureCallback mPictureCallback = new Camera.PictureCallback(){
        public void onPictureTaken(byte[] imageData,Camera c) {

            if (imageData != null) {

                Intent mIntent = new Intent();
                Bundle b = new Bundle();
                b.putByteArray("imageData",imageData);
                Intent i = new Intent(mContext,ImageDisplayActivity.class);
                i.putExtras(b);
                startActivity(i);

                setResult(FOTO_MODE,mIntent);
                finish();

            }
        }
    };

在活动B中：

Bundle extras = getIntent().getExtras();
        BitmapFactory.Options options=new BitmapFactory.Options();
        options.inSampleSize = 5;
        byte[] imageData = extras.getByteArray("imageData");
        Bitmap myImage = BitmapFactory.decodeByteArray(imageData,imageData.length,options);

       Matrix mat=new Matrix();
        mat.postRotate(90);
        bitmapResult = Bitmap.createBitmap(myImage,myImage.getWidth(),myImage.getHeight(),mat,true); 

        Canvas c = new Canvas(bitmapResult);
        drawTextImage(bitmapResult);

我收到我把它放在一个位图中的图片,我旋转它并在方法drawTextImage()中绘制一个文本.
毕竟,我使用以下方法将bitmapResult存储在SD卡上：

public static boolean StoreByteImage(Context mContext,Bitmap bitmap,int quality,String expName) {


        FileOutputStream fileOutputStream = null;
        String extStorageDirectory=Environment.getExternalStorageDirectory().toString();
        File myNewFolder = new File(extStorageDirectory + newFolder);
        if(myNewFolder.mkdirs())
        {
        myNewFolder.mkdir();
        }
        try {     

            //fileOutputStream = new FileOutputStream(sdImageMainDirectory.toString() +"/image.jpg");
            fileOutputStream = new FileOutputStream(myNewFolder +"/"+expName+".jpg");
            BufferedOutputStream bos = new BufferedOutputStream(fileOutputStream);

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

            bos.flush();
            bos.close();

        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        return true;
    }

我这样称它为：StoreByteImage(getBaseContext(),bitmapResult,100,String.valueOf(value));
谢谢