MainActivity

MainActivity.java

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

    TextSwitcher myTextSwitcher;
    AnimationSet as;
    AppCompatButton button;

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

        myTextSwitcher = (TextSwitcher) this.findViewById(R.id.text_switcher);
        button = (AppCompatButton) this.findViewById(R.id.button);
        button.setOnClickListener(this);

        myTextSwitcher.setFactory(new ViewSwitcher.ViewFactory() {
            @Override
            public View makeView() {
                LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
                AppCompatTextView textView = (AppCompatTextView) inflater.inflate(R.layout.textview, null);
                return textView;
            }
        });

        final Animation in = new AlphaAnimation(0.0f, 1.0f);
        final Animation out = new AlphaAnimation(1.0f, 0.0f);
        in.setDuration(100);
        out.setDuration(100);

        as = new AnimationSet(true);
        as.addAnimation(out);
        as.addAnimation(in);
    }

    @Override
    public void onClick(View view) {

        myTextSwitcher.setText("Bye World");
        myTextSwitcher.startAnimation(as);
    }
}