Using Toasts in other classes?

public class FunFactsActivity extends Activity {

    private FactBook mFactBook = new FactBook();
    private ColorWheel mColorWheel = new ColorWheel();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_fun_facts);

        // Declare our View variables and assign them the Views from the layout file
        final TextView factLabel = (TextView)findViewById(R.id.factTextView);
        final Button showFactButton = (Button)findViewById(R.id.showFactButton);
        final RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.relativeLayout);
        View.OnClickListener listener = new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String fact = mFactBook.getFact();
                //Update the label wth the dynamic fact
                factLabel.setText(fact);


                int color = mColorWheel.getColor();
                relativeLayout.setBackgroundColor(color);
                showFactButton.setTextColor(color);

            }
        };
        showFactButton.setOnClickListener(listener);

        Toast.makeText(this, "Fun Facts has started", Toast.LENGTH_LONG).show();
    }


}

import java.util.Random;

public class FactBook {


    // Member variables - properties about the object



    String [] mFacts = {
            "Ants stretch when they wake up in the morning.",
            "Ostriches can run faster than horses.",
            "Olympic gold medals are actually made mostly of silver.",
            "You are born with 300 bones; by the time you are an adult you will have 206.",
            "It takes about 8 minutes for light from the Sun to reach Earth.",
            "Some bamboo plants can grow almost a meter in just one day.",
            "The state of Florida is bigger than England.",
            "Some penguins can leap 2-3 meters out of the water.",
            "On average, it takes 66 days to form a new habit.",
            "Mammoths still walked the earth when the Great Pyramid was being built."};

    // methods (Things the object can do)

    public String getFact() {

        String fact = "";

        // Randomly select a fact
        Random randomGenerator = new Random(); // construct a new random number generator
        int randomNumber = randomGenerator.nextInt(mFacts.length);

        fact = mFacts[randomNumber];

        return fact;

    }
}