How to retrieve the image from SDcard and store it into sqlite db as blob type

Question

I just try to get the image from sd card and url and store it into SQLITE database as blob type. I really confused with logic how to do anyone known please help me. Thanks in advance.

Here is my code for retrieve image from the drawable folder in asset.

 public class MainActivity extends Activity implements OnClickListener{

    private ImageView imageview=null;
    private Button btninsert=null;
    private Button btnretrive=null;
    private MyDataBase mdb=null;
    private SQLiteDatabase db=null;
    private Cursor c=null;
    private byte[] img=null;
    private static final String DATABASE_NAME = "ImageDb.db";
    public static final int DATABASE_VERSION = 1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btninsert=(Button)findViewById(R.id.button_insert);
        btnretrive= (Button)findViewById(R.id.button_retrieve);
        imageview= (ImageView)findViewById(R.id.imageView_image);
        imageview.setImageResource(0);
        btninsert.setOnClickListener(this);
        btnretrive.setOnClickListener(this);
        mdb=new MyDataBase(getApplicationContext(), DATABASE_NAME,null, DATABASE_VERSION);


        Bitmap b=BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
        ByteArrayOutputStream bos=new ByteArrayOutputStream();
        b.compress(Bitmap.CompressFormat.PNG, 100, bos);
        img=bos.toByteArray();
        db=mdb.getWritableDatabase();
    }

    @Override
    public void onClick(View arg0) {

        if(btninsert==arg0)
        {
            ContentValues cv=new ContentValues();
            cv.put("image", img);
            db.insert("tableimage", null, cv);
            Toast.makeText(this, "inserted successfully", Toast.LENGTH_SHORT).show();
        }
        else if(btnretrive==arg0)
        {
                String[] col={"image"};
                c=db.query("tableimage", col, null, null, null, null, null);

                if(c!=null){
                    c.moveToFirst();
                    do{
                        img=c.getBlob(c.getColumnIndex("image"));
                       }while(c.moveToNext());
                }
                Bitmap b1=BitmapFactory.decodeByteArray(img, 0, img.length);

                 imageview.setImageBitmap(b1);
                 Toast.makeText(this, "Retrive successfully", Toast.LENGTH_SHORT).show();
            }
        }

}

Answer 1

This line show that getting the bitmap from drawable

Bitmap b=BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);

Here you can get the bimap from sd card of a particular image photo.png

File f = new File("/mnt/sdcard/photo.png");
Bitmap b = BitmapFactory.decodeFile(f.getAbsolutePath());