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Monday, 3 October 2011

Store the Image into SQLite Database


In this tutorial, I used the BLOB data type to store the image into the SQLite  database.
BLOB --> Binary Large Object.
This data type is used to store the values in the binary format. This type is used to store the images ,audio and video file.
Here I am going to store the image .So that ,
1.I have to convert the image to byte[].
2.This byte[] is going to be stored in the database.
Example:

The DBAdapter .java file

import java.io.ByteArrayOutputStream;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteStatement;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;

public class DBAdapter {         
    private static final String DATABASE_NAME = "myDatabase.db";
    private static final int DATABASE_VERSION = 1;

    private static final String USERDETAILS=
                "create table userdetails(usersno integer primary key autoincrement,userid text not null ,username text not null,password text not null,photo BLOB,visibility text not null);";
    private final Context context;
    private DatabaseHelper DBHelper;
    private SQLiteDatabase db;
    public DBAdapter(Context ctx)     {
        this.context = ctx;
        DBHelper = new DatabaseHelper(context);
    }
       
    private static class DatabaseHelper extends SQLiteOpenHelper     {
        DatabaseHelper(Context context)         {
            super(context, DATABASE_NAME, null, DATABASE_VERSION);
        }
        public void onCreate(SQLiteDatabase db)         {
                db.execSQL(USERDETAILS);
        }
        public void onUpgrade(SQLiteDatabase db, int oldVersion,    int newVersion)         {
                db.execSQL("DROP TABLE IF EXISTS users");
            onCreate(db);
        }
    }   
 
    public DBAdapter open() throws SQLException
    {
        db = DBHelper.getWritableDatabase();
        return this;
    }
  
    public void close()     {
                DBHelper.close();
    }
    public long insertUserDetails(String uname,String userid, String pass, byte[] photo,String visibility)     {
        ContentValues initialValues = new ContentValues();
        initialValues.put("username", uname);
        initialValues.put("userid",userid);
        initialValues.put("password", pass);
        initialValues.put("photo",photo);
        initialValues.put("visibility",visibility);
        return db.insert("userdetails", null, initialValues);
    }
  
 public Cursor getUserDetails(String userid)    {
                return db.rawQuery("select username,userid,photo,visibility ,usersno from userdetails where userid='"+userid+"'",null);
    }
    public int updateUserDetails(String userid,String username,byte[] photo,String visibility)    {
                ContentValues args = new ContentValues();
        args.put("username", username);
        args.put("photo",photo);
        args.put("visibility",visibility);
        return db.update("userdetails", args,"userid='" +userid+"'", null);
    }  
    public Cursor searchFriends(String username,String to_userid)    {
                return db.rawQuery("select userid,username,photo,usersno from userdetails where username LIKE '%"+username+"%' AND userid <>'"+to_userid+"' AND userid NOT IN (select request_destinationid from requestdetails where request_sourceid='"+to_userid+"' and status=1)",null);
    }
    public void deleteFriend(int l_userid,int dest_userid)   {
                db.delete("requestdetails","request_sourceid="+l_userid+" and request_destinationid="+dest_userid+" and status=1", null);
                db.delete("requestdetails","request_sourceid="+dest_userid+" and request_destinationid="+l_userid+" and status=1", null);
    }
}



In  the Activity class write like this
To Store into the DB..
private DBAdapter db=new DBAdaptet(this);
db.open();
ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
Bitmap bitmap = (BitmapDrawable)getResources().getDrawable(R.drawable.common)).getBitmap();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);  
byte[] photo = baos.toByteArray();
db.insertUserDetails(fullName,userid, password, photo,visibility);


Retrieve from DB..
byte[]  photo=cursor.getBlob(..);
ByteArrayInputStream imageStream = new ByteArrayInputStream(photo);
Bitmap theImage= BitmapFactory.decodeStream(imageStream);
image_view.setImageBitmap(theImage);






5 comments:

krishnaveniv said...

Hi ....

Your code is very nice.Because itz easily understood...But i can't do developed it..So please post me full source code or send me full project zip file.Thanks in advance.

nazeerahmed said...

please sent full code

a simple person said...
This comment has been removed by the author.
Pavel Co Ebele said...

Very much useful article. Kindly keep blogging

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Petter Marry said...

Hi, Great.. Tutorial is just awesome..It is really helpful for a newbie like me.. I am a regular follower of your blog. Really very informative post you shared here. Kindly keep blogging. If anyone wants to become a Java developer learn from Java Training in Chennai. or learn thru Java Online Training in India . Nowadays Java has tons of job opportunities on various vertical industry.

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