از ورودی دریافت و در listView خروجی دهد

به نام خدا 

برنامه بنویسید که پس از دریافت ورودی از EditText انرا بازدن یک دکمه به listView  انتقال دهد.

کد xml : 

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.amir.test6.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello User!"
        android:textSize="30dp"
        android:background="#af1"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintHorizontal_bias="0.802"
        app:layout_constraintVertical_bias="0.054"
        android:id="@+id/textView"
        android:layout_marginEnd="76dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentEnd="true"
        />

    <ListView
        android:layout_width="138dp"
        android:layout_height="495dp"
        tools:layout_editor_absoluteX="8dp"
        tools:layout_editor_absoluteY="8dp"
        android:id="@+id/listview"
        android:background="#8ad"
        android:layout_alignTop="@+id/additem"
        android:layout_alignParentStart="true"
        android:layout_marginTop="25dp" />

    <EditText
        android:id="@+id/editText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="23dp"
        android:ems="10"
        android:inputType="textPersonName"
        android:hint="Please Enter Your Text"
        android:background="#dd5"
        android:layout_below="@+id/textView"
        android:layout_alignParentEnd="true"
        android:layout_marginEnd="37dp" />

    <Button
        android:id="@+id/additem"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="list add"
        android:hint="Please Enter Your Text"
        android:background="#f8f"
        android:onClick="onClick"
        android:layout_marginTop="24dp"
        android:layout_below="@+id/editText"
        android:layout_toEndOf="@+id/listview" />

</RelativeLayout>

کد activity :

public class MainActivity extends AppCompatActivity {
    EditText editText;
    Button addButton;
    ListView listView;
    ArrayList<String> listItems;
    ArrayAdapter<String> adapter;
    String []str ={"tehran","esfahan","shiraz","sistan","kerman","khorasan"};


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        editText = (EditText) findViewById(R.id.editText);
        addButton = (Button) findViewById(R.id.additem);
        listView = (ListView) findViewById(R.id.listview);
        listItems = new ArrayList<String>();
        listItems.add("tehran");
        adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, listItems);
        listView.setAdapter(adapter);
        addButton.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v)
            {
                listItems.add(editText.getText().toString());
                adapter.notifyDataSetChanged();
            }
        });
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> a, View v, int position, long id) {
                Toast.makeText(MainActivity.this, "Clicked", Toast.LENGTH_LONG).show();
            }
        });
    }
}