MainActivity.java

public class MainActivity extends Activity implements MyAdapter.CallBackItemList{
    
    ...

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ...
        mAdapter = new MyAdapter(myDataset, this);
        ...
    }

    @Override
    public void onClickActionItemList() {
        Toast.makeText(this, "Yellow Item", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onClickActionButtonItemList() {
        Toast.makeText(this, "Yellow Button", Toast.LENGTH_SHORT).show();
    }
}