Como eu faço para recortar imagens da galeria(CropImage)

Mobile
#1

Olá, estou acessando a galeria e salvando a imagem com sharedPreferences.

Mas eu não obtive sucesso em implementar a função de Crop, (corta a imagem)

 @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.btn_save:
                try { //img da galery

                    Intent i = new Intent(Intent.ACTION_PICK,
                            android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                    startActivityForResult(i, RESULT_LOAD_IMAGE);
                } catch (Exception e) {
                    e.printStackTrace();
                }
                break;
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
            Uri selectedImage = data.getData();
            String[] filePathColumn = {MediaStore.Images.Media.DATA};
            Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
            cursor.moveToFirst();

            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
            String picturePath = cursor.getString(columnIndex);
            cursor.close();


            ImageView iv = findViewById(R.id.newImage);
            iv.setImageBitmap(BitmapFactory.decodeFile(picturePath));
            btmap = BitmapFactory.decodeFile(picturePath);//decode method called

            SharedPreferences.Editor editor = sharedpreferences.edit();
            editor.putString(key, encodeTobase64(btmap));
            editor.commit();
        }


    }

    public static String encodeTobase64(Bitmap image) {
        Bitmap immage = image;
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        immage.compress(Bitmap.CompressFormat.PNG, 100, baos);
        byte[] b = baos.toByteArray();
        String imageEncoded = Base64.encodeToString(b, Base64.DEFAULT);

        Log.d("Image Log:", imageEncoded);
        return imageEncoded;

    }

    public static Bitmap decodeBase64(String input) {
        byte[] decodedByte = Base64.decode(input, 0);
        return BitmapFactory
                .decodeByteArray(decodedByte, 0, decodedByte.length);
    }