How to invoke activity in another class

Question

I want to create a class for my activity(for instructions) . In new class, I copy the code below in the program, but android studio cannot recognize Activity

public class FormInfoo {
  private Activity activity;//thisLine
  private LinearLayout linearLayout;
  private EditText inputName;
  private EditText inputPhone;
  private EditText inputEmail;
  private CheckBox cbSharePhone;
  private Button btnSubmit;

public FormInfoo(Activity activity) 
{
    this.activity = activity;
    .
    .
    .
}}

Answer 1

you simply forget add this line i think

import android.app.Activity;

hope its help