Save Bitmap as a file in SD card

gistfile1.java

void saveBitmapToSd(Bitmap mBitmap) {
    try {
        // sdcardフォルダを指定
        File root = Environment.getExternalStorageDirectory();

        // 日付でファイル名を作成　
        Date mDate = new Date();
        SimpleDateFormat fileName = new SimpleDateFormat("yyyyMMdd_HHmmss");

        // 保存処理開始
        FileOutputStream fos = null;
        fos = new FileOutputStream(new File(root, fileName.format(mDate) + ".jpg"));

        // jpegで保存
        mBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);

        // 保存処理終了
        fos.close();
    } catch (Exception e) {
        Log.e("Error", "" + e.toString());
    }
}