代码的问题在于,带有TabLayout的ViewPager应该是Fragment的一部分,而不是Activity的一部分.而NavigationDrawer应该只在视口中(即在容器中)替换另一个片段.现在,在您的代码中,您试图以某种方式将新片段插入ViewPager.

Here’s是一个非常基本的应用程序,带有导航抽屉,一个带有标签的片段和没有标签的休息片段,您可以将其用作示例：

Activity.xml：

@H_502_12@<android.support.v4.widget.DrawerLayout 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:id="@+id/drawer_layout" android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true" tools:openDrawer="start"> <android.support.design.widget.CoordinatorLayout android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true"> <android.support.design.widget.AppBarLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/AppTheme.AppBarOverlay"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="?attr/colorPrimary" app:popupTheme="@style/AppTheme.PopupOverlay" /> </android.support.design.widget.AppBarLayout> <FrameLayout android:id="@+id/fragmentContainer" android:layout_marginTop="?attr/actionBarSize" android:layout_width="match_parent" android:layout_height="match_parent"/> </android.support.design.widget.CoordinatorLayout> <android.support.design.widget.NavigationView android:id="@+id/nav_view" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_gravity="start" android:fitsSystemWindows="true" app:headerLayout="@layout/nav_header_main" app:menu="@menu/activity_main_drawer" /> </android.support.v4.widget.DrawerLayout>

活动中的代码：

@H_502_12@public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); ActionBarDrawerToggle toggle = new ActionBarDrawerToggle( this,drawer,toolbar,R.string.navigation_drawer_open,R.string.navigation_drawer_close); drawer.setDrawerListener(toggle); toggle.syncState(); NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); navigationView.setNavigationItemSelectedListener(this); getSupportFragmentManager().beginTransaction().replace(R.id.fragmentContainer,new FragmentWithTabs()).commit(); } @Override public void onBackPressed() { DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); if (drawer.isDrawerOpen(GravityCompat.START)) { drawer.closeDrawer(GravityCompat.START); } else { super.onBackPressed(); } } @SuppressWarnings("StatementWithEmptyBody") @Override public boolean onNavigationItemSelected(MenuItem item) { // Handle navigation view item clicks here. int id = item.getItemId(); if (id == R.id.fragment_1) { getSupportFragmentManager().beginTransaction().replace(R.id.fragmentContainer,new FragmentWithTabs()).commit(); } else if (id == R.id.fragment_2) { getSupportFragmentManager().beginTransaction().replace(R.id.fragmentContainer,new FragmentWithoutTabs()).commit(); } else if (id == R.id.fragment_3) { getSupportFragmentManager().beginTransaction().replace(R.id.fragmentContainer,new Fragment()).commit(); } DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); drawer.closeDrawer(GravityCompat.START); return true; } }

即,如您所见,我正在使用id fragmentContainer替换FrameLayout中的片段.

所有与带有制表符的片段相关的逻辑,包含在FragmentWithTabs中：

@H_502_12@public class FragmentWithTabs extends Fragment { @Nullable @Override public View onCreateView(LayoutInflater inflater,@Nullable ViewGroup container,@Nullable Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_with_tabs,container,false); ViewPager viewPager = (ViewPager)rootView.findViewById(R.id.viewPager); TabLayout tabLayout = (TabLayout)rootView.findViewById(R.id.tabLayout); viewPager.setAdapter(new FragmentPagerAdapter(getChildFragmentManager()) { @Override public Fragment getItem(int position) { return new SubFragment(position == 0? Color.BLUE : position == 1? Color.WHITE : Color.RED); } @Override public CharSequence getPageTitle(int position) { return position+""; } @Override public int getCount() { return 3; } }); tabLayout.setupWithViewPager(viewPager); return rootView; } }

我希望,这有帮助