Android ImageButton Onclick not working - eclipse

Question

I'm trying to change images when an image button is clicked. Even without the code for changing image my application is crashing whenever I use an onClickListener or try to set an onClick listener. How do i fix this I'm running app on kitkat api 19
package com.example.t11;
import android.R.string;
import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
import android.widget.ImageView;
public class Scene extends ActionBarActivity {
ImageView scene=(ImageView) findViewById(R.id.images);
int i=0;
int[] imgarray = {R.drawable.i1,R.drawable.i2,R.drawable.i4,R.drawable.i6,R.drawable.i7,R.drawable.i8,R.drawable.i9,R.drawable.i10,R.drawable.i12};
//Just set one Click listener for the image
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scene);
Intent sceneint = getIntent();
ImageButton left = (ImageButton) findViewById(R.id.left);
ImageButton right= (ImageButton) findViewById(R.id.right);
// Left and right button listener creation
left.setOnClickListener(leftlistener);
right.setOnClickListener(rightlistener);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.scene, menu);
return true;
}
View.OnClickListener rightlistener = new OnClickListener() {
public void onClick(View v1) {
//Increase Counter to move to next Image
i++;
scene.setImageResource(imgarray[i]);
}
};
View.OnClickListener leftlistener = new OnClickListener() {
public void onClick(View v) {
//Increase Counter to move to Previous Image
i--;
scene.setImageResource(imgarray[i]);
}
};
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

Answer 1

Instantiate the listener as an anonymous function :
left.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
//Increase Counter to move to Previous Image
i--;
scene.setImageResource(imgarray[i]);
}
});
if you want the reference of the listener as well for some reason then try instantiating and assigning the listener before registering it with the button.