ذخیره و بازخوانی عکس از sd card ?

برای ذخیره 

 drawView.setDrawingCacheEnabled(true);
			String imgSaved = MediaStore.Images.Media.insertImage(
					getContentResolver(), drawView.getDrawingCache(), UUID
							.randomUUID().toString() + ".png", "drawing");

برای بارگذاری دوباره تصویر

 public void loadImagefromGallery(View view) {
		// Create intent to Open Image applications like Gallery, Google Photos
		Intent galleryIntent = new Intent(Intent.ACTION_PICK,
				android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
		// Start the Intent
		startActivityForResult(galleryIntent, RESULT_LOAD_IMG);
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		try {
			// When an Image is picked
			if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
					&& null != data) {
				// Get the Image from data

				Uri selectedImage = data.getData();
				String[] filePathColumn = { MediaStore.Images.Media.DATA };

				// Get the cursor
				Cursor cursor = getContentResolver().query(selectedImage,
						filePathColumn, null, null, null);
				// Move to first row
				cursor.moveToFirst();

				int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
				imgDecodableString = cursor.getString(columnIndex);
				cursor.close();
				ImageView imgView = (ImageView) findViewById(R.id.img);
				// Set the Image in ImageView after decoding the String
				imgView.setImageBitmap(BitmapFactory
						.decodeFile(imgDecodableString));
}