Action Bar未在API16中显示

Question

我试图在我的主要活动中使用导航抽屉。 当我在API 23模拟器中运行它时，一切看起来都很好。 但是当我在API 16 Emulator中运行它时，我的操作栏会消失！

这是我的清单文件：

        <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:theme="@style/AppTheme">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

这是我的styles.xml

    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/line1</item>
    <item name="colorPrimaryDark">@color/line1_dark</item>
    <item name="colorAccent">@color/isbc</item>
</style>

<style name="AppTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
</style>

这是我的v21 / styles.xml

    <style name="AppTheme.NoActionBar">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
    <item name="android:windowDrawsSystemBarBackgrounds">true</item>
    <item name="android:statusBarColor">@android:color/transparent</item>
</style>

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/line1</item>
    <item name="colorPrimaryDark">@color/line1_dark</item>
    <item name="colorAccent">@color/isbc</item>
</style>

这是我的Mainactivity.java

public class MainActivity extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener {

NavigationView navigationView = null;
Toolbar toolbar = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    MainFragment fragment = new MainFragment();
    android.support.v4.app.FragmentTransaction fragmentTransaction =  getSupportFragmentManager().beginTransaction();
    fragmentTransaction.replace(R.id.fragment_container, fragment);
    fragmentTransaction.commit();
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });

    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) findViewById(R.id.nav_view);
    navigationView.setNavigationItemSelectedListener(this);
    changeTypeface(navigationView);
}

@Override
public void onBackPressed() {
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    if (drawer.isDrawerOpen(GravityCompat.START)) {
        drawer.closeDrawer(GravityCompat.START);
    } else {
        super.onBackPressed();
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}


private void applyFontToItem(MenuItem item, Typeface font) {
    SpannableString mNewTitle = new SpannableString(item.getTitle());
    mNewTitle.setSpan(new CustomTypefaceSpan("", font, 16), 0 ,
            mNewTitle.length(), Spannable.SPAN_INCLUSIVE_INCLUSIVE);
    item.setTitle(mNewTitle);
}


private void changeTypeface(NavigationView navigationView) {
    FontTypeface fontTypeface = new FontTypeface(this);
    Typeface typeface = fontTypeface.getTypefaceAndroid();

    MenuItem item;

    item = navigationView.getMenu().findItem(R.id.nav_camera);
    item.setTitle("لیست ایستگاه ها");
    item.setIcon(R.drawable.ic_action_stations);
    applyFontToItem(item, typeface);

    item = navigationView.getMenu().findItem(R.id.nav_gallery);
    item.setTitle("نقشه");
    item.setIcon(R.drawable.ic_action_map);
    applyFontToItem(item, typeface);

    item = navigationView.getMenu().findItem(R.id.nav_slideshow);
    item.setTitle("درباره ما");
    item.setIcon(R.drawable.ic_action_us);
    applyFontToItem(item, typeface);
}

    @Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
    // Handle navigation view item clicks here.
    int id = item.getItemId();

    if (id == R.id.nav_camera) {
        MainFragment fragment = new MainFragment();
        android.support.v4.app.FragmentTransaction fragmentTransaction =  getSupportFragmentManager().beginTransaction();
        fragmentTransaction.replace(R.id.fragment_container, fragment);
        fragmentTransaction.commit();        }
    else if (id == R.id.nav_gallery) {
        MapFragment fragment = new MapFragment();
        android.support.v4.app.FragmentTransaction fragmentTransaction =  getSupportFragmentManager().beginTransaction();
        fragmentTransaction.replace(R.id.fragment_container, fragment);
        fragmentTransaction.commit();
    } else if (id == R.id.nav_slideshow) {

    }

    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
    drawer.closeDrawer(GravityCompat.START);
    return true;
}

}

这是我的app_bar_main：

    <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>

<include layout="@layout/fragment_main" />

<FrameLayout
    android:id="@+id/fragment_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"></FrameLayout>

这是我的activity_main.xml

<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">

<include
    layout="@layout/app_bar_main"
    android:id="@+id/app_bar"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

<android.support.design.widget.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="220dp"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true"
    app:headerLayout="@layout/nav_header_main"
    app:menu="@menu/activity_main_drawer" />

当我在模拟器API 21中运行此代码时，一切看起来都很好。 但是当我在API 16中运行它时，我收到此错误： ＆＃34;此活动已经有一个由窗口装饰提供的操作栏。不要在主题中request Window.FEATURE_SUPPORT_ACTION_BAR并将windowActionBar设置为false，而是使用工具栏。＆＃34;

我猜它告诉我不要使用操作栏，但是如果我将windowActionBar设置为false，我怎样才能显示我的导航抽屉？

i've tried this topic but it didn't work