public class CommentsActivity extends BaseDrawerActivity implements SendCommentButton.OnSendClickListener {`
@Bind(R.id.btnSendComment)
SendCommentButton btnSendComment;
    private void setupComments() {
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
    rvComments.setLayoutManager(linearLayoutManager);
    rvComments.setHasFixedSize(true);

public class BaseDrawerActivity extends BaseActivity {

public class BaseActivity extends AppCompatActivity {

public class SendCommentButton extends ViewAnimator implements View.OnClickListener {

java.lang.ClassCastException: android.support.v7.widget.AppCompatButton cannot be cast to com.example.alsongdunstan.thefaithapp.ui.view.SendCommentButton

<android.support.v7.widget.RecyclerView
            android:id="@+id/rvComments"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:scrollbars="none" />