Android Retrieving Images stored in Base64 value from MS SQL Server

This is a continuation of my previous post on Android Storing Images in MS SQL Server. This one explains how you can retrieve the image back into Android Imageview.

Basically the code is simple. You have to just decode the base64 value back.

byte[] decodeString = Base64.decode(“BASE64 VALUE HERE”, Base64.DEFAULT);
Bitmap decodebitmap = BitmapFactory.decodeByteArray(decodeString,
0, decodeString.length);
img.setImageBitmap(decodebitmap);

The Application

Make a new Layout xml file in your res > layout folder with name fetchimage.xml and edit it as following :

fetchimage.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#1abc9c"
android:orientation="vertical"
android:weightSum="11" >

<TextView
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1"
android:padding="10dp"
android:text="ANDROID FETCH IMAGE"
android:textColor="#fff"
android:textSize="15sp" />

<EditText
android:id="@+id/edtid"
android:layout_width="256dp"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1"
android:background="@android:drawable/editbox_background_normal"
android:hint="ENTER ID HERE"
android:textColor="#000"
android:typeface="monospace" />

<ProgressBar
android:id="@+id/pbbar"
android:layout_width="20dp"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:layout_weight="1" />

<Button
android:id="@+id/btnfetch"
android:layout_width="256dp"
android:layout_height="0dp"
android:background="@android:drawable/btn_default"
android:layout_gravity="center"
android:layout_weight="1"
android:text="FETCH" />

<ImageView
android:id="@+id/imageview"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="6"
android:src="@drawable/img11" />

<TextView
android:id="@+id/lblpath"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_marginTop="5dp"
android:layout_weight="2"
android:padding="10dp"
android:text="v xcvcxvcvcvxcvxcvxcvxcvxcvxc v xcvcxvcvcvxcvxcvxcvxcvxcvxc v xcvcxvcvcvxcvxcvxcvxcvxcvxc"
android:textColor="#fff"
android:textSize="13sp" />

</LinearLayout>

Make a new java Class with name FetchImage.java and edit as following :

FetchImage.java

package com.example.temp;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import android.annotation.SuppressLint;
import android.app.Dialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
import android.support.v7.app.ActionBarActivity;
import android.util.Base64;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;

/**
* Created by abc on 13-Jul-15.
*/
public class FetchImage extends ActionBarActivity {
public static final int requestcode = 1;
ImageView img;
TextView lblpath;
Dialog m;
EditText edtid;
Button btnfetch;
ProgressBar pbbar;

byte[] byteArray;
String call, db, un, passwords;
String id;
Connection connect;
ResultSet rs;

@SuppressLint("NewApi")
private Connection CONN(String _user, String _pass, String _DB,
String _server) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
Connection conn = null;
String ConnURL = null;
try {

Class.forName("net.sourceforge.jtds.jdbc.Driver");
ConnURL = "jdbc:jtds:sqlserver://" + _server + ";"
+ "databaseName=" + _DB + ";user=" + _user + ";password="
+ _pass + ";"; // c: // :c
conn = DriverManager.getConnection(ConnURL);
} catch (SQLException se) {
Log.e("ERRO", se.getMessage());
} catch (ClassNotFoundException e) {
Log.e("ERRO", e.getMessage());
} catch (Exception e) {
Log.e("ERRO", e.getMessage());
}
return conn;
}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fetchimage);
img = (ImageView) findViewById(R.id.imageview);

lblpath = (TextView) findViewById(R.id.lblpath);
edtid = (EditText) findViewById(R.id.edtid);
btnfetch = (Button) findViewById(R.id.btnfetch);
pbbar = (ProgressBar) findViewById(R.id.pbbar);
pbbar.setVisibility(View.GONE);

call = "192.168.0.100";
un = "sa";
passwords = "123";
db = "mydb1";
btnfetch.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
id = edtid.getText().toString();
Fetch f = new Fetch();
f.execute("");

}
});

}

private class Fetch extends AsyncTask<String, String, String> {
String z = " ";

@Override
protected void onPreExecute() {
pbbar.setVisibility(View.VISIBLE);
}

@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub

String truckstring = "select * from imgtbl where ID=" + id;

try {
connect = CONN(un, passwords, db, call);
Statement stmt = connect.createStatement();

rs = stmt.executeQuery(truckstring);
if (rs != null && rs.next()) {
z = rs.getString("Images");

}

} catch (Exception e) {
System.out.print("err");
e.printStackTrace();
z = "No such ID";

}
return z;
}

@Override
protected void onPostExecute(String rs) {

byte[] decodeString = Base64.decode(rs, Base64.DEFAULT);
Bitmap decodebitmap = BitmapFactory.decodeByteArray(decodeString,
0, decodeString.length);
img.setImageBitmap(decodebitmap);
pbbar.setVisibility(View.GONE);

}

}

}