如何从MainActivity访问AdapterViewPager？ -AndroidX

Question

我想从MainActivity访问AdapterViewPager中的按钮

//这是AdapterViewPager

public class AdapterViewPagerHot extends PagerAdapter {

private Context context;
private LayoutInflater layoutInflater;
private Integer[] images = {R.drawable.cat_mermaid_cartoon_grumpy_cat_94004_1280x720,R.drawable.catnrobot,R.drawable.kleptocats,R.drawable.magiccat,R.drawable.flyingcat};
String url[] =  new String[]{
        "https://i.chzbgr.com/full/8803531264/hD42E57C6/",
        "https://i.pinimg.com/originals/d2/fc/5a/d2fc5ab22b9b9d13320b3a8be48625ad.jpg",
        "https://i.ytimg.com/vi/5rOtNmdKgsE/maxresdefault.jpg"
};

public AdapterViewPagerHot(Context context) {
    this.context = context;
}

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

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

@Override
public Object instantiateItem(ViewGroup container, final int position) {

    layoutInflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View v = layoutInflater.inflate(R.layout.item_viewpagerdisplay, null);
    ImageView imageView = v.findViewById(R.id.imageView);
    final ImageView ICONHotViewPagerSaving = v.findViewById(R.id.ICON_HotViewPagerSaving);
    imageView.setImageResource(images[position]);
    /*Glide.with(getActivity()).load(image_url).into(circleimageviewPicture);*/

    v.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
                Toast.makeText(context, "Slide" + (position+1) + "Clicked", Toast.LENGTH_SHORT).show();

        }
    });


    final Boolean[] boollatestnewssaving = {false};
    ICONHotViewPagerSaving.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            if (boollatestnewssaving[0] == true){
                Toast.makeText(v.getContext(), "Turn Off Saved News ", Toast.LENGTH_SHORT).show();
                ICONHotViewPagerSaving.setImageResource(R.drawable.saved_off);
                boollatestnewssaving[0] = false;
                /*updateSavedNewsSaving("update_newssaving", id, false);*/
            } else if(boollatestnewssaving[0] == false) {
                Toast.makeText(v.getContext(), "Turn On Saved News ", Toast.LENGTH_SHORT).show();
                ICONHotViewPagerSaving.setImageResource(R.drawable.saved_on);
                boollatestnewssaving[0] = true;
                /*updateSavedNewsSaving("update_newssaving", id, true);*/
            }
        }
    });

    ViewPager vp = (ViewPager) container;
    vp.addView(v, 0);
    return v;

}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {

    ViewPager vp = (ViewPager) container;
    View view = (View) object;
    vp.removeView(view);

}
}

//我要访问

Main Activity.java
OnCreate(){

//在此里面 }