Erreur de Listview: "votre contenu doit avoir une ListView dont l'attribut id est 'android.R. id.liste""

je reçois une erreur dans mon logcat disant" Votre contenu doit avoir un ListView dont l'attribut id est 'android.R. id.liste'". Mon code se compile et s'exécute, mais force ferme quand je commence mon activité listview. J'ai vérifié sur de nombreuses questions similaires, il semble être un problème commun, mais je suis toujours incapable de corriger mon code.

La Déclaration:

    private ListView lv;
    Context mContext;
    List mList;
    String[] testcontacts;

    MessageView aa = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.firstlist);
        testcontacts = getResources()
                .getStringArray(R.array.testcontacts_array);

        aa = new MessageView();
        lv = getListView();/*(ListView) lv.findViewById(R.id.list); Had to comment out, it cannot find list*/
        lv.setAdapter(aa);
        lv.setTextFilterEnabled(true);

        lv.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                // When clicked, show a toast with the TextView text
                Toast.makeText(getApplicationContext(),
                        ((TextView) view).getText(), Toast.LENGTH_SHORT).show();
            }
        });
    }
class MessageView extends ArrayAdapter<String> {
        MessageView() {
            super(FirstLoginActivity.this, android.R.layout.activity_list_item,
                    testcontacts);
            // TODO Auto-generated constructor stub
        }

        public View getView(int position, View convertview, ViewGroup parent) {
            Log.d("Ebz", "inside getView method");
            ViewHolder holder;
            View v = convertview;
            if (v == null) {
                Log.d("Ebz", "if v == null");
                LayoutInflater inflater = getLayoutInflater();
                v = inflater.inflate(R.layout.list_items, null);
                holder = new ViewHolder();
                holder.firstLine = (TextView) v.findViewById(R.id.firstLine);
                holder.secondLine = (TextView) v.findViewById(R.id.secondLine);
                holder.icon1 = (ImageView) v.findViewById(R.id.icon1);
                holder.icon2 = (ImageView) v.findViewById(R.id.icon2);
                v.setTag(holder);
            } else {
                holder = (ViewHolder) v.getTag();
            }
            holder.firstLine.setText(testcontacts[position]);
            holder.secondLine.setText(testcontacts[position]);
            holder.icon1.setImageBitmap(null);
            holder.icon2.setImageBitmap(null);
            // call the images directly?
            return v;
        }

        class ViewHolder {
            TextView firstLine;
            TextView secondLine;
            ImageView icon1;
            ImageView icon2;

        }
    }
}

My XML

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <RelativeLayout
        android:id="@+id/top_control_bar"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dp"
            android:layout_weight="1"
            android:background="#cc252a"
            android:paddingBottom="10dp"
            android:paddingLeft="10dp"
            android:paddingTop="10dp"
            android:text="This will be Changed"
            android:textAppearance="?android:attr/textAppearanceLarge" />
    </RelativeLayout>

    <LinearLayout
        android:id="@+id/bottom_control_bar"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true" >
    </LinearLayout>

    <ListView
        android:id="@+id/list"
        android:layout_width="fill_parent"
        android:layout_height="0dip"
        android:layout_above="@id/bottom_control_bar"
        android:layout_below="@id/top_control_bar"
        android:choiceMode="multipleChoice" />

</RelativeLayout>

My ListItems:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <RelativeLayout
        android:id="@+id/top_control_bar"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" >


        <TextView
            android:id="@+id/textView1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="10dp"
            android:layout_weight="1"
            android:background="#cc252a"
            android:paddingBottom="10dp"
            android:paddingLeft="10dp"
            android:paddingTop="10dp"
            android:text="This will be Changed"
            android:textAppearance="?android:attr/textAppearanceLarge" />

    </RelativeLayout>

    <LinearLayout
        android:id="@+id/bottom_control_bar"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true" >
    </LinearLayout>

    <ListView
        android:id="@+id/list"
        android:layout_width="fill_parent"
        android:layout_height="0dip"
        android:layout_above="@id/bottom_control_bar"
        android:layout_below="@id/top_control_bar"
        android:choiceMode="multipleChoice"
        android:divider="#cc252a"
        android:dividerHeight="14.5dp" />

</RelativeLayout>