Question

我有一个应用程序来拍摄项目，这些项目必须在ActivityScreen的某个固定区域中可见。问题是从保存的位图中显示在活动中的图片，看起来与我预览和拍摄的内容完全不同。它看起来放大并显示我拍摄时我在预览中看不到的区域：这是关键代码行

图片捕捉：

surfHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

captImageView = (ImageView)findViewById(R.id.CamImageView);

byte [] photoData;
Camera cam;
SurfaceHolder surfHolder;
SurfaceView surfView;


Camera.PictureCallback cback;

cback = new Camera.PictureCallback() {

        @Override
        public void onPictureTaken(byte[] data, Camera camera) {

                        final int length = data.length;
                opts.inSampleSize = 4;
            final BitmapFactory.Options opts = new BitmapFactory.Options();    
            Bitmap bMap = null;

            try {

                    bMap = BitmapFactory.decodeByteArray(data, 0, length, opts);

            } catch(Exception e) {

            }catch(OutOfMemoryError e) {

            } 

            captImageView.setImageBitmap(bitmap);

            if(bMap==null) {
               cam.startPreview();
            } else {
                             savePhotoButton.setVisibility(ImageView.VISIBLE);
                 takePhotoButton.setVisibility(ImageView.INVISIBLE);
                 photoData = data;
            }
        }
 }

图片保存：

captImageView.setImageBitmap(null);
// SAVE THE PICTURE   THIS SAVES PICTURE IN WRONG SIZE.  LOOKS LIKED ZOOMED IN NOT WHAT WAS PREVIEWED!!!


           public void photoSave(byte[] data) {

               final int length = data.length;
           final BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = 2;

                try {
        Bitmap bMap = BitmapFactory.decodeByteArray(data, 0, length, options);
         int quality = 75;
             File file = new File(getDir(), fname);
         fileOutputStream = new FileOutputStream(file);
         bMap.compress(CompressFormat.JPEG, quality, fileOutputStream);
        }catch(FileNotFoundException e) {

        }  catch(OutOfMemoryError e) {} }

图像显示在活动中可绘制不工作的图像显示的图像是在图片拍摄时没有在预览中看到的.......

BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = inSampSize;
Bitmap bitmap = BitmapFactory.decodeFile(path, options);

Drawable drawable = bitmap;
ImageView pictureView = (ImageView)findViewById(R.id.pictureViewer);
pictureView.setImageDrawable(drawable);

Android如何调整相机图片的大小并将其保存为位图，以便在活动中的固定矩形区域中显示

0 个答案: