Error with onItemClickListener

package teamtreehouse.com.stormy.ui;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Parcelable;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

import java.util.Arrays;

import butterknife.ButterKnife;
import butterknife.InjectView;
import teamtreehouse.com.stormy.R;
import teamtreehouse.com.stormy.adapters.DayAdapter;
import teamtreehouse.com.stormy.weather.Day;

public class DailyForecastActivity extends Activity {
 @InjectView(android.R.id.list) ListView mListView;
    @InjectView(android.R.id.empty) ListView mEmptyTextView;
    private Day[] mDays;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_daily_forecast);
        ButterKnife.inject(this);

        Intent intent = getIntent();
        Parcelable[] parcelables = intent.getParcelableArrayExtra(MainActivity.DAILY_FORECAST);
        mDays = Arrays.copyOf(parcelables, parcelables.length, Day[].class);

        DayAdapter adapter = new DayAdapter(this, mDays);
        mListView.setAdapter(adapter);
        mListView.setEmptyView(mEmptyTextView);
        mListView.getOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        String dayOfTheWeek = mDays[position].getDayOfTheWeek();
        String conditions = mDays[position].getSummary();
        String highTemp = mDays[position].getTemperatureMax() + "";
        String message = String.format("On %s the high will be %s and it will be %s",
                dayOfTheWeek,
                highTemp,
                conditions);
        Toast.makeText(DailyForecastActivity.this, message, Toast.LENGTH_LONG).show();

    }
});
    }
}