How to display drawable image on ongl liewallpaper in android

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HI all ,
I am new to opengl projects I want to Create open gl project by using belown code.

package com.example.myglproject;

import java.nio.FloatBuffer;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLES10;
import android.opengl.GLES20;
import android.opengl.GLU;
import android.opengl.GLUtils;
import net.rbgrn.android.glwallpaperservice.*;

public class MyRenderer implements GLWallpaperService.Renderer {
/* public void onDrawFrame(GL10 gl) {
// Your rendering code goes here

gl.glClearColor(0.2f, 0.4f, 0.2f, 1f);
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
}

public void onSurfaceChanged(GL10 gl, int width, int height) {
}

public void onSurfaceCreated(GL10 gl, EGLConfig config) {
}*/

/**
* Called when the engine is destroyed. Do any necessary clean up because
* at this point your renderer instance is now done for.
*/
Bitmap b;
int[] textureIds;
public void release() {
}
public void mybitmap(Bitmap wood) {
// TODO Auto-generated method stub
this.b=wood;
}

public void loadGLTexture(GL10 gl) {
System.out.println("loaded");
// // loading texture
textureIds = new int[1];

Bitmap bitmap = b;

//here is the problem when ever i command bitmap it will be working .with out command its //showing null pointer exception
// generate one texture pointer
gl.glGenTextures(1, textureIds, 0);
// ...and bind it to our array
gl.glBindTexture(GL10.GL_TEXTURE_2D, textureIds[0]);

// create nearest filtered texture
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER,
GL10.GL_NEAREST);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER,
GL10.GL_LINEAR);

// Different possible texture parameters, e.g. GL10.GL_CLAMP_TO_EDGE
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S,
GL10.GL_REPEAT);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T,
GL10.GL_REPEAT);

// Use Android GLUtils to specify a two-dimensional texture image from
// our bitmap
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
// //
// // // Clean up
bitmap.recycle();
}

@Override
public void onDrawFrame(GL10 gl) {

/* gl.glClearColor(0.2f, 0.4f, 0.2f, 1f);
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);*/
gl.glViewport(0, 0 , 480, 800);
loadGLTexture(gl);



}
/*public static int loadGLTextureFromBitmap( Bitmap bitmap, GL10 gl ) {

// Generate one texture pointer
int[] textureIds = new int[1];
gl.glGenTextures( 1, textureIds, 0 );

// bind this texture
gl.glBindTexture( GL10.GL_TEXTURE_2D, textureIds[0] );

// Create Nearest Filtered Texture
gl.glTexParameterf( GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR );
gl.glTexParameterf( GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR );

gl.glTexParameterf( GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT );
gl.glTexParameterf( GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT );

// Use the Android GLUtils to specify a two-dimensional texture image from our bitmap
GLUtils.texImage2D( GL10.GL_TEXTURE_2D, 0, bitmap, 0 );

return textureIds[0];
}*/
@Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
// TODO Auto-generated method stub
if(height == 0) { //Prevent A Divide By Zero By
height = 1; //Making Height Equal One
}

gl.glViewport(0, 0, width, height); //Reset The Current Viewport
gl.glMatrixMode(GL10.GL_PROJECTION); //Select The Projection Matrix
gl.glLoadIdentity(); //Reset The Projection Matrix

//Calculate The Aspect Ratio Of The Window
GLU.gluPerspective(gl, 45.0f, (float)width / (float)height, 0.1f, 100.0f);

gl.glMatrixMode(GL10.GL_MODELVIEW); //Select The Modelview Matrix
gl.glLoadIdentity();
}

@Override
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
// TODO Auto-generated method stub
loadGLTexture(gl);

gl.glEnable(GL10.GL_TEXTURE_2D); //Enable Texture Mapping ( NEW )
gl.glShadeModel(GL10.GL_SMOOTH); //Enable Smooth Shading
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.5f); //Black Background
gl.glClearDepthf(1.0f); //Depth Buffer Setup
gl.glEnable(GL10.GL_DEPTH_TEST); //Enables Depth Testing
gl.glDepthFunc(GL10.GL_LEQUAL); //The Type Of Depth Testing To Do

//Really Nice Perspective Calculations
gl.glHint(GL10.GL_PERSPECTIVE_CORRECTION_HINT, GL10.GL_NICEST);

}


}
i try to display drawable image on live wallpaper,but it shows blank page..........
please help me anny one...........