gistfile1.txt

class CustomPagerAdapter extends PagerAdapter {

    Context mContext;
    LayoutInflater mLayoutInflater;
    String[] mResources;

    public CustomPagerAdapter(Context context, String[] mResources) {
        mContext = context;
        mLayoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        this.mResources = mResources;
    }

    @Override
    public int getCount() {
        return mResources.length;
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
        return view == ( object);
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        View itemView = mLayoutInflater.inflate(R.layout.pager_item, container, false);

        ImageView imageView = (ImageView) itemView.findViewById(R.id.imageView);
        Picasso.with(mContext)
                .load(mResources[position])
                .into(imageView);

        container.addView(itemView);

        return itemView;
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        container.removeView((LinearLayout) object);
    }
    
}

gistfile2.txt

//как использовать

CustomPagerAdapter mCustomPagerAdapter = new CustomPagerAdapter(PoemnSlider.this, urls);

        final ViewPager mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mCustomPagerAdapter);