添加导航栏后 TabLayout 不显示选项卡
TabLayout not showing tabs after adding navigation bar
我正在使用 ViewPager + TabLayout。它工作正常,但在我添加导航栏后,TabLayout 不显示选项卡。我搜索了解决方案,但其中 none 帮助了我。如果有人告诉我为什么会这样,那将非常有帮助。
MainActivity.java
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
SimpleFragmentPageAdapter adapter = new SimpleFragmentPageAdapter(this, getSupportFragmentManager());
viewPager.setAdapter(adapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
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.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
content_main.xml
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
style="@style/CategoryTab"
android:background="@color/colorPrimary"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabTextColor="#ddd"
app:tabSelectedTextColor="#fff" />
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:background="#fff"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
请参考此代码。在应用栏内添加选项卡布局 layout.Try this
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="200dp"
android:id="@+id/appBarLayout2">
<android.support.design.widget.TabLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tabLayout2"
app:tabMode="fixed"
app:tabGravity="fill"
></android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="300dp"
android:layout_alignParentStart="true"
android:layout_alignParentBottom="true"
android:id="@+id/viewPager2"
android:layout_below="@+id/appBarLayout2">
</android.support.v4.view.ViewPager>
我正在使用 ViewPager + TabLayout。它工作正常,但在我添加导航栏后,TabLayout 不显示选项卡。我搜索了解决方案,但其中 none 帮助了我。如果有人告诉我为什么会这样,那将非常有帮助。
MainActivity.java
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
SimpleFragmentPageAdapter adapter = new SimpleFragmentPageAdapter(this, getSupportFragmentManager());
viewPager.setAdapter(adapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
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.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
content_main.xml
<android.support.design.widget.TabLayout
android:id="@+id/tabs"
style="@style/CategoryTab"
android:background="@color/colorPrimary"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabTextColor="#ddd"
app:tabSelectedTextColor="#fff" />
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:background="#fff"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
请参考此代码。在应用栏内添加选项卡布局 layout.Try this
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="200dp"
android:id="@+id/appBarLayout2">
<android.support.design.widget.TabLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/tabLayout2"
app:tabMode="fixed"
app:tabGravity="fill"
></android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="300dp"
android:layout_alignParentStart="true"
android:layout_alignParentBottom="true"
android:id="@+id/viewPager2"
android:layout_below="@+id/appBarLayout2">
</android.support.v4.view.ViewPager>