导航抽屉标题未隐藏

Question

我尝试使用抽屉菜单创建一个简单的应用程序。我用Android Studio创建了一个项目并选择了Navigation Drawer Layout。我试图隐藏导航抽屉头并将其放在工具栏上......我找到了放在工具栏上的方法，但我找不到图片中隐藏红色部分的标题。你能帮我吗？

这是我的布局页面xml代码

<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:layout_width="match_parent"
    android:layout_height="match_parent" />

<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"
    android:layout_marginTop="?attr/actionBarSize" //With this code i put menu under toolbar
    app:menu="@menu/activity_main_drawer" />

 </android.support.v4.widget.DrawerLayout>

这是我的MainActivity.java

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);


}

@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();
    FragmentManager fragmentManager = getFragmentManager();

    if (id == R.id.nav_first_layout) {
        fragmentManager.beginTransaction().replace(R.id.content_frame,new FirstFragment()).commit();
    } else if (id == R.id.nav_second_layout) {
        fragmentManager.beginTransaction().replace(R.id.content_frame,new SecondFragment()).commit();
    } else if (id == R.id.nav_third_layout) {
        fragmentManager.beginTransaction().replace(R.id.content_frame,new ThirdFragment()).commit();
    }   else if (id == R.id.nav_home) {
        Intent intent = new Intent(getApplicationContext(), MainActivity.class);
        startActivity(intent);
    }

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

如何隐藏红色部分？

Answer 1

在xml中的 android.support.design.widget.NavigationView 下设置fitsystemwindow=false。

Answer 2

在 NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); navigationView.setNavigationItemSelectedListener(this); View header = navigationView.getHeaderView(0); header.setVisibility(View.GONE);

中使用此功能

NavigationView

如果你没有使用那个检查bolew
在主要活动的xml文件中，您应该<android.support.design.widget.NavigationView android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/navigation_view_I" android:layout_gravity="start" android:fitsSystemWindows="true" app:menu="@menu/drawer_menu" app:headerLayout="@layout/navigation_drawer_header"> 喜欢这个

NavigationView

从上面的app:headerLayout="@layout/navigation_drawer_header" 删除最后一行，这是

Cursor addrCursor = sResolver.query(Uri.parse("content://mms-sms/canonical-address/" + recipientId), null,null, null, null);
if (addrCursor.moveToFirst()) {
  String number = addrCursor.getString(0); // we got number here
  number = number.replace(" ", "");
  number = number.replace("-", "");
  Contact c = db.findContactByNumber(number);
  return c;
} else {
  return null;
}

Answer 3

在NavigationDrawer Fragment类的<{1}}中添加以下代码

onCreateView()

注意： - 通过标题视图资源文件重新连接R.layout.drawer_header。