public class MainActivity extends ActionBarActivity
        implements NavigationDrawerFragment.NavigationDrawerCallbacks {


    private String[] naviItems = {"공지사항", "오늘의 한마디", "게시판", "사진", "연락처", "셔틀버스", "원아등록", "설정"};
    private NavigationDrawerFragment mNavigationDrawerFragment;
    private CharSequence mTitle;
    private ListView lvNaviList;
    private FrameLayout flContainer;
    private Button mJoinButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        lvNaviList = (ListView)findViewById(R.id.lv_activity_main_nav_list);
        flContainer = (FrameLayout)findViewById(R.id.fl_activity_main_container);
        mJoinButton = (Button)findViewById(R.id.join_bt);
        lvNaviList.setAdapter(
                new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, naviItems));
        lvNaviList.setOnItemClickListener(new DrawerItemClickListener());


        mNavigationDrawerFragment = (NavigationDrawerFragment)
                getSupportFragmentManager().findFragmentById(R.id.navigation_drawer);
        mTitle = getTitle();

        // Set up the drawer.
        mNavigationDrawerFragment.setUp(
                R.id.navigation_drawer,
                (DrawerLayout) findViewById(R.id.drawer_layout));

        mJoinButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
            Intent intent = new Intent(MainActivity.this, Join.class);

            startActivity(intent);
          }
        });

    }


네비게이션 드로워에서 위와같이 액티비티 전환은 안되나요??

(AndroidManifest.xml에 액티비티 추가했습니다.)

 <activity android:name="com.example.ham.childhapp.Join"
            android:label="회원가입" />

         

mJoinButton클릭시 앱이 예기치못하게 종료되네요..