工具栏标题没有显示在标签式活动中

问题描述：

使用TabsLayout实现了标签式活动，但现在活动的标题没有显示在工具栏上，尝试了我在互联网上找到的各种修复程序，但似乎没有任何工作。工具栏标题没有显示在标签式活动中

活动的XML：

<android.support.design.widget.AppBarLayout 
    android:id="@+id/appbar" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    app:title="title" 
    android:paddingTop="@dimen/appbar_padding_top" 
    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:layout_scrollFlags="scroll|enterAlways" 
     app:popupTheme="@style/AppTheme.PopupOverlay"> 

     <android.support.design.widget.TabLayout 
      android:id="@+id/tabs" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:paddingTop="@dimen/appbar_padding_top" 
      android:theme="@style/AppTheme.AppBarOverlay" 
      app:tabMode="scrollable"> 

     </android.support.design.widget.TabLayout> 

    </android.support.v7.widget.Toolbar> 

</android.support.design.widget.AppBarLayout> 

<android.support.v4.view.ViewPager 
    android:id="@+id/container" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    app:layout_behavior="@string/appbar_scrolling_view_behavior" />

OnCreate中：保护无效的onCreate（捆绑savedInstanceState）{ super.onCreate（savedInstanceState）; setContentView（R.layout.activity_ordenes_de_viaje_tabbed）;

// Create the adapter that will return a fragment for each of the three 
    // primary sections of the activity. 
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager()); 

    // Set up the ViewPager with the sections adapter. 
    mViewPager = (ViewPager) findViewById(R.id.container); 
    mViewPager.setAdapter(mSectionsPagerAdapter); 

    // Give the TabLayout the ViewPager 
    TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs); 
    tabLayout.setupWithViewPager(mViewPager); 
    Intent intent = getIntent(); 
    item = intent.getIntExtra("item", 0); 
    mViewPager.setCurrentItem(item); 
    Toolbar mActionBarToolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(mActionBarToolbar); 
    setSupportActionBar(mActionBarToolbar); 
    getSupportActionBar().setTitle("My title"); 
    getSupportActionBar().setDisplayShowTitleEnabled(true);

答

你tabLayout不应该是你的工具栏的孩子应低于它和用户？ATTR/actionBarSize女巫会给你准确的操作栏大小，而不管该设备DPI

<android.support.design.widget.AppBarLayout 
android:id="@+id/appbar" 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
app:title="title" 
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:layout_scrollFlags="scroll|enterAlways" 
    app:popupTheme="@style/AppTheme.PopupOverlay"> 
</android.support.v7.widget.Toolbar> 
<android.support.design.widget.TabLayout 
     android:id="@+id/tabs" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:marginTop="?attr/actionBarSize" 
     android:theme="@style/AppTheme.AppBarOverlay" 
     app:tabMode="scrollable"> 
    </android.support.design.widget.TabLayout> 
    </android.support.design.widget.AppBarLayout> 
    <android.support.v4.view.ViewPager 
android:id="@+id/container" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
app:layout_behavior="@string/appbar_scrolling_view_behavior" />

工具栏标题没有显示在标签式活动中

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