Question

我试图给家庭片段类充气并且我收到了这个错误：

类型或命名空间名称＆＃39; DashboardFragment＆＃39;找不到（你错过了使用指令或汇编引用吗？）

这是我的主要活动类：

Subject

这是我的片段类：

using Android.App;
using Android.Widget;
using Android.OS;
using Android.Support.Design.Widget;
using SupportFragment = Android.Support.V4.App.Fragment;
using Android.Support.V4.Widget;
using Android.Support.V7.App;
using Android.Views;



namespace LottoGenie.Androidv2
{
 [Activity(Label = "LottoGenie.Androidv2", MainLauncher = true, Icon ="@drawable/ic_launcher")]
public class MainActivity : Activity
{
    private DrawerLayout drawerLayout;
    protected override void OnCreate(Bundle bundle)
    {
        base.OnCreate(bundle);

        // Set our view from the "main" layout resource
        SetContentView(Resource.Layout.Main);
        drawerLayout = FindViewById<DrawerLayout>(Resource.Id.drawer_layout);

        var toolbar = FindViewById<Toolbar>(Resource.Id.app_bar);
        SetActionBar(toolbar);
        ActionBar.SetTitle(Resource.String.ApplicationName);
        ActionBar.SetDisplayHomeAsUpEnabled(true);
        ActionBar.SetDisplayShowHomeEnabled(true);

        var navigationView = FindViewById<NavigationView>(Resource.Id.nav_view);
        navigationView.NavigationItemSelected += NavigationView_NavigationItemSelected;

        var drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, Resource.String.open_drawer, Resource.String.close_drawer);
        drawerLayout.AddDrawerListener(drawerToggle);
        drawerToggle.SyncState();



        var ft = this.FragmentManager.BeginTransaction();

        ft.AddToBackStack(null);
        ft.Add(Resource.Id.HomeFrameLayout, new DashboardFragment());
        ft.Commit();

    }

    protected override void OnResume()
    {
        ActionBar.SetTitle(Resource.String.ApplicationName);
        base.OnResume();
    }

    void NavigationView_NavigationItemSelected(object sender, NavigationView.NavigationItemSelectedEventArgs e)
    {
        switch (e.MenuItem.ItemId)
        {
            case (Resource.Id.nav_home):
                Toast.MakeText(this, "Home!", ToastLength.Short).Show();
                break;
            case (Resource.Id.nav_powerball):
                Toast.MakeText(this, "Powerball Picks!", ToastLength.Short).Show();
                break;
            case (Resource.Id.nav_megamillions):
                Toast.MakeText(this, "MegaMillions Picks!", ToastLength.Short).Show();
                break;
            case (Resource.Id.nav_jumbobucks):
                Toast.MakeText(this, "Jumbobucks Picks!", ToastLength.Short).Show();
                break;

        }
        drawerLayout.CloseDrawers();
    }

    public override bool OnCreateOptionsMenu(Android.Views.IMenu menu)
    {
        MenuInflater.Inflate(Resource.Menu.action_menu, menu);
        if (menu != null)
        {
            menu.FindItem(Resource.Id.action_refresh).SetVisible(true);
        }
        return base.OnCreateOptionsMenu(menu);
    }

    public override bool OnOptionsItemSelected(IMenuItem item)
    {
        switch (item.ItemId)
        {
            case Android.Resource.Id.Home:
                return true;
            default:
                return base.OnOptionsItemSelected(item);
        }
    }

    public override void OnBackPressed()
    {
        if (FragmentManager.BackStackEntryCount != 0)
        {
            FragmentManager.PopBackStack();
        }
        else
        {
            base.OnBackPressed();
        }
    }
}
}

我错过了什么？提前谢谢。

Answer 1

我找到了一个解决方法。事实证明，我有新的字符串和视图没有更新到资源设计器文件。我必须先将这些行添加到.csproj文件中的第一个PropertyGroup中：

<MonoAndroidResourcePrefix>Resources</MonoAndroidResourcePrefix>
<AndroidResgenClass>Resource</AndroidResgenClass>

之后我执行了清理和重建。然后我删除了上面的行并运行了另一个构建。修好了！感谢

主要活动无法识别C＃ - Xamarin Fragment类

1 个答案: