How to store images in sqlite database on click event of button?

How to store image in sqlite database开发者_Python百科 on click event of button?

package com.examples.aMySQL2;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteCursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;


//Reading lines from a file
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

import org.apache.http.util.ByteArrayBuffer;


public class aMySQL2Activity extends Activity implements OnClickListener
{
    protected static TextView textView;
    protected static ImageView bmImage;
    protected Button start;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        bmImage = (ImageView)findViewById(R.id.imageView1);
        textView = (TextView) findViewById(R.id.textView1);

        start = (Button) findViewById(R.id.button1);
        start.setOnClickListener(this); 

    DownloadFile();


    }
    // /data/data/<package_name>/databases  -путь к базе данных по умолчанию
    // "/data/data/com.examples.aMySQL2/databases/MyDB.db" //-путь к базе данных по умолчанию
    //  "/sdcard/Nick/MyDB.db"
    //  "/mnt/sdcard/Nick/MyDB.db"
    /// Android/data/<package_name>/files/
    public void onClick(View v) 
    {
     SQLiteDatabase myDb;       
     String MySQL;
     int icount;
     byte[] byteImage1 = null;
     byte[] byteImage2 = null;
       MySQL="create table emp1(_id INTEGER primary key autoincrement, fio TEXT not null, picture BLOB);";
       myDb = openOrCreateDatabase("/sdcard/Nick/MyWeatherDB.db", Context.MODE_PRIVATE, null);
  //     myDb.execSQL(MySQL);
  String s=myDb.getPath();
  textView.append("\r\n" + s+"\r\n");       
       myDb.execSQL("delete from emp1");
       ContentValues newValues = new ContentValues();
    newValues.put("fio", "Иванов Петр Сергеевич");

 /////////// insert picture to blob field ///////////////////// 
    try
    {
    FileInputStream instream = new FileInputStream("/sdcard/Nick/weather.png"); 
    BufferedInputStream bif = new BufferedInputStream(instream); 
    byteImage1 = new byte[bif.available()]; 
    bif.read(byteImage1); 
textView.append("\r\n" + byteImage1.length+"\r\n"); 
    newValues.put("picture", byteImage1); 

    long ret = myDb.insert("emp1", null, newValues); 
    if(ret<0) textView.append("\r\n!!! Error add blob filed!!!\r\n");
    } catch (IOException e) 
    {
        textView.append("\r\n!!! Error: " + e+"!!!\r\n");   
    }

////////////Read data ////////////////////////////  
Cursor cur = myDb.query("emp1",null, null, null, null, null, null);
    cur.moveToFirst();
    while (cur.isAfterLast() == false)
    {
        textView.append("\r\n" + cur.getString(1)+"\r\n");
        cur.moveToNext();
    }
///////Read data from blob field////////////////////
    cur.moveToFirst();
    byteImage2=cur.getBlob(cur.getColumnIndex("picture")); // ИМЕННО ТАК!!!
bmImage.setImageBitmap(BitmapFactory.decodeByteArray(byteImage2, 0, byteImage2.length));
    textView.append("\r\n" + byteImage2.length+"\r\n"); 
//////////////////////////    
    cur.close();
    myDb.close();
  }

    public void DownloadFile() 
    {   
      Bitmap bitmap1 = null;                    
      bitmap1 = BitmapFactory.decodeFile("/sdcard/Nick/saranka.jpg"); //weather.png");
      bmImage.setImageBitmap(bitmap1);
    }


}

You have to store the complete url of the image on Button click in the database. Further, just use that url to draw the images by fetching the url from the database.

button1.setOnClickListener(new OnClickListener() {

    public void onClick(View v) {
          // insert url of the image into the database here
       }
}

Hope this will give you some idea on the issue.