为什么我不能在我的“公共 class 适配器扩展 PagerAdapter”到 MainActivity2s

Question

this is a click listener for pages of view pager

view.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                switch (position){
                    case 0:
                        Intent intent = new Intent(MainActivity.this,MainActivity2s.class);**
                        context.startActivity(intent);
                    break;
                    case 1:
                        Toast.makeText(context,"intent Tow ",Toast.LENGTH_SHORT).show();
                    break;
                    case 2:
                        Toast.makeText(context,"intent Three ",Toast.LENGTH_SHORT).show();
                    break;

                }
            }
        });

**=> there i get this error ('com.example.app.MainActivity' is not an enclosing class)

Answer 1

I think your adapter is not an inner class of MainActivity , thus you cannot call MainActivity.this . I'm guessing what you are trying to do and what you should do rather is to populate fragments not activities when ViewPager is scrolled.

You may take a look here if that is the case.