package de.fu_berlin.cdv.chasingpictures;

import android.app.Activity;
import android.os.Bundle;


public class Menu extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_menu);
    }
}

package de.fu_berlin.cdv.chasingpictures;

import android.app.Activity;
import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.os.Bundle;
import android.widget.ImageView;


public class Menu extends Activity {

    private ImageView mImageNext;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_menu);

        mImageNext = (ImageView) findViewById(R.id.imageNext);
        ColorMatrix matrix = new ColorMatrix();
        matrix.setSaturation(0);
        ColorMatrixColorFilter cf = new ColorMatrixColorFilter(matrix);
        mImageNext.setColorFilter(cf);
    }
}

Make picture for 'next' grayscale