Android MyAdapter设置---芝麻博客

public class MyAdapter extends PagerAdapter {

    private List list;
    private Context context;


    public MyAdapter(List list) {
        this.list = list;
    }

    public MyAdapter(List list, MainActivity mainActivity) {
        this.list = list;
        this.context = mainActivity;

    }

    @Override
    public int getCount() {
        return list.size();
    }

    @NonNull
    @Override
    public Object instantiateItem(@NonNull ViewGroup container, int position) {
       // return super.instantiateItem(container, position);
        View view = list.get(position);
        container.addView(view);
        return view;

    }

    @Override
    public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
//        super.destroyItem(container, position, object);
        container.removeView(list.get(position));
    }

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

如下是MainActivity的代码，上面是MyAdapter的代码。

        list = new ArrayList<>();
        list.add(LayoutInflater.from(this).inflate(R.layout.layout_a,null));
        list.add(LayoutInflater.from(this).inflate(R.layout.layout_b,null));
        list.add(LayoutInflater.from(this).inflate(R.layout.layout_c,null));

        View view = LayoutInflater.from(this).inflate(R.layout.layout_d,null);
        list.add(view);



        myAdapter = new MyAdapter(list,this);
        viewPager.setAdapter(myAdapter);

Android MyAdapter设置---芝麻博客