Android: Can't get the size of photo taken by camera acitivity

debugcn Published at Dev

abnormal

I wrote a camera activity as Android's guide documents says. I saved the photo, then I just want to know the width and height of this photo. But I can't get it with BitmapFactory.decodeStream. Here's my code, anybody can help me?

private PictureCallback mPictureCallback = new PictureCallback() {

    @Override
    public void onPictureTaken(byte[] data, Camera camera) {
            //save the photo
        File pictureFile = new File("/sdcard/test/test.jpg");
        if(!pictureFile.exists()) {
            try {
                pictureFile.createNewFile();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        try {
            FileOutputStream fos = new FileOutputStream(pictureFile);
            fos.write(data);
            fos.close();
        } catch (FileNotFoundException e) {
            Log.d(TAG, "File not found: " + e.getMessage());
        } catch (IOException e) {
            Log.d(TAG, "Error accessing file: " + e.getMessage());
        }

            //get the photo's width and height
        {
            BitmapFactory.Options options = new BitmapFactory.Options();
            options.inJustDecodeBounds = true;
            InputStream is = null;
            try {
                is = new FileInputStream("/sdcard/test/test.jpg");
            } catch (FileNotFoundException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            if(is != null) {
                Bitmap bitmap = BitmapFactory.decodeStream(is, null, options);
                int picWidth = bitmap.getWidth();
                try {
                    is.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }



        CameraActivity.this.setResult(RESULT_OK);
        CameraActivity.this.finish();
    }
};

athom

Is this solution working for you ?

BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;

//Returns null, sizes are in the options variable
BitmapFactory.decodeFile("/sdcard/image.png", options);
int width = options.outWidth;
int height = options.outHeight;
//If you want, the MIME type will also be decoded (if possible)
String type = options.outMimeType;

Source : android: get image dimensions without opening it

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