C# Android Xamarin NavigationView处理事件错误
我正在使用NavigationView制作以下教程中的简易菜单: 但我的问题是,以下菜单项不发送事件 我的菜单如下所示: 我的main.xml代码是:C# Android Xamarin NavigationView处理事件错误,c#,android,visual-studio,xamarin.android,navigationview,C#,Android,Visual Studio,Xamarin.android,Navigationview,我正在使用NavigationView制作以下教程中的简易菜单: 但我的问题是,以下菜单项不发送事件 我的菜单如下所示: 我的main.xml代码是: <?xml version="1.0" encoding="utf-8"?> <android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http:/
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:id="@+id/maintActivity_drawerlayout">
<android.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:id="@+id/maintActivity_navigationView"
app:menu="@menu/left_menus" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="240dp"
android:orientation="vertical"
android:gravity="bottom"
android:layout_marginLeft="16dp"
android:id="@+id/container_layout">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/frameLayout_viewForFragments" />
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
和我的mainActivity.cs文件:
using Android.App;
using Android.Widget;
using Android.OS;
using Android.Support.V7.App;
using Android.Views;
using Android.Support.V4.Widget;
using Android.Support.Design.Widget;
using Android.Support.V4.View;
// install from NuGet android.support.design
// And App Compat support
namespace App4
{
[Activity(Label = "TopSideBar App", MainLauncher = true , Icon = "@drawable/ic_launcher")]
public class MainActivity : AppCompatActivity
{
DrawerLayout m_drawerLayout;
NavigationView m_navigationView;
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
SupportActionBar.Title = Resources.GetString(Resource.String.app_name); ;
m_drawerLayout = FindViewById<DrawerLayout>(Resource.Id.maintActivity_drawerlayout);
m_navigationView = FindViewById<NavigationView>(Resource.Id.maintActivity_navigationView);
m_navigationView.NavigationItemSelected += M_navigationView_NavigationItemSelected;
//Display sandwich menu icon
SupportActionBar.SetDisplayHomeAsUpEnabled(true);
SupportActionBar.SetHomeAsUpIndicator(Resource.Drawable.ic_menu_black_24dp_1x);
ConfigureNavigationViewHeader();
}
private void ConfigureNavigationViewHeader()
{
View viewHeader = LayoutInflater.Inflate(Resource.Layout.mainActivity_navigationView_header, null);
ImageView imageviewUserAvatar = viewHeader.FindViewById<ImageView>(Resource.Id.mainActivity_navigationView_header_imageview_userAvatar);
TextView textviewUserPseudo = viewHeader.FindViewById<TextView>(Resource.Id.mainActivity_navigationView_header_textview_UserPseudo);
TextView textviewUserDesc = viewHeader.FindViewById<TextView>(Resource.Id.mainActivity_navigationView_header_textview_UserDesc);
imageviewUserAvatar.SetImageResource(Resource.Drawable.profile_pic);
textviewUserPseudo.Text = "Housma Mardini";
textviewUserDesc.Text = "Web Developer";
m_navigationView.AddHeaderView(viewHeader);
}
private void M_navigationView_NavigationItemSelected(object sender, NavigationView.NavigationItemSelectedEventArgs e)
{
switch (e.MenuItem.ItemId)
{
case Resource.Id.leftmenu_profile:
Toast.MakeText(this, "profile", ToastLength.Short).Show();
m_drawerLayout.CloseDrawer(GravityCompat.Start);
break;
case Resource.Id.leftmenu_shopping_list:
break;
case Resource.Id.leftmenu_favorites:
break;
case Resource.Id.leftmenu_params_option:
break;
case Resource.Id.leftmenu_params_about:
break;
}
}
public override bool OnCreateOptionsMenu(Android.Views.IMenu menu)
{
MenuInflater.Inflate(Resource.Menu.top_menus, menu);
return base.OnCreateOptionsMenu(menu);
}
public override bool OnOptionsItemSelected(IMenuItem item)
{
switch (item.ItemId)
{
case Resource.Id.share:
Toast.MakeText(this , "Share" ,ToastLength.Short ).Show();
break;
case Resource.Id.moreoption:
Toast.MakeText(this, "Settings", ToastLength.Short).Show();
break;
//Handle sandwich menu icon click
case Android.Resource.Id.Home:
//If menu is open, close it. Else, open it.
if (m_drawerLayout.IsDrawerOpen(GravityCompat.Start))
m_drawerLayout.CloseDrawers();
else
m_drawerLayout.OpenDrawer(GravityCompat.Start);
break;
}
return base.OnOptionsItemSelected(item);
}
}
}
使用Android.App;
使用Android.Widget;
使用Android.OS;
使用Android.Support.V7.App;
使用Android.Views;
使用Android.Support.V4.Widget;
使用Android.Support.Design.Widget;
使用Android.Support.V4.View;
//从NuGet android.support.design安装
//和应用程序兼容性支持
名称空间App4
{
[活动(Label=“TopSideBar App”,MainLauncher=true,Icon=“@drawable/ic_launcher”)]
公共类MainActivity:AppCompativeActivity
{
抽屉布局m_抽屉布局;
导航视图m_导航视图;
创建时受保护的覆盖无效(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
//从“主”布局资源设置视图
SetContentView(Resource.Layout.Main);
SupportActionBar.Title=Resources.GetString(Resource.String.app_name);
m_抽屉布局=FindViewById(Resource.Id.maintActivity_抽屉布局);
m_navigationView=findviewbyd(Resource.Id.maintActivity_navigationView);
m_navigationView.NavigationItemSelected+=m_navigationView_NavigationItemSelected;
//显示三明治菜单图标
SupportActionBar.SetDisplayHomeAsUpEnabled(true);
SupportActionBar.SetHomeAsUpIndicator(Resource.Drawable.ic_菜单_黑色_24dp_1x);
ConfigureNavigationViewHeader();
}
私有void配置NavigationViewHeader()
{
View viewHeader=LayoutFlater.Inflate(Resource.Layout.mainActivity\u navigationView\u header,null);
ImageView imageviewUserAvatar=viewHeader.FindViewById(Resource.Id.mainActivity\u navigationView\u header\u ImageView\u userAvatar);
TextView textviewUserPseudo=viewHeader.FindViewById(Resource.Id.mainActivity\u navigationView\u header\u TextView\u UserPseudo);
TextView textviewUserDesc=viewHeader.FindViewById(Resource.Id.mainActivity\u navigationView\u header\u TextView\u UserDesc);
imageviewUserAvatar.SetImageResource(Resource.Drawable.profile_pic);
textviewUserPseudo.Text=“Housma Mardini”;
textviewUserDesc.Text=“Web开发者”;
m_navigationView.AddHeaderView(视图标题);
}
私有无效M_navigationView_NavigationItemSelected(对象发送方,navigationView.NavigationItemSelectedEventArgs e)
{
开关(e.MenuItem.ItemId)
{
案例资源.Id.leftmenu\u配置文件:
Toast.MakeText(这个“profile”,ToastLength.Short).Show();
m_抽屉布局。关闭抽屉(重力公司启动);
打破
case Resource.Id.leftmenu\u购物\u列表:
打破
case Resource.Id.leftmenu\u收藏夹:
打破
case Resource.Id.leftmenu_参数_选项:
打破
case Resource.Id.leftmenu_参数_关于:
打破
}
}
public override bool oncreateoptions菜单(Android.Views.IMenu菜单)
{
菜单充气器。充气(Resource.Menu.top\u菜单,菜单);
返回base.onCreateOptions菜单(菜单);
}
公共覆盖bool OnOptionsItemSelected(IMenuItem)
{
开关(item.ItemId)
{
案例资源.Id.share:
Toast.MakeText(这个“Share”,ToastLength.Short).Show();
打破
案例资源.Id.more选项:
Toast.MakeText(这是“设置”,ToastLength.Short).Show();
打破
//处理三明治菜单图标单击
案例Android.Resource.Id.Home:
//如果菜单处于打开状态,请将其关闭。否则,请将其打开。
if(m_抽屉布局IsDrawerOpen(重力公司启动))
m_抽屉布局。抽屉();
其他的
m_drawerLayout.OpenDrawer(重力compat.Start);
打破
}
返回基本选项。OnOptionsItemSelected(项目);
}
}
}
但是,当我从main.xml文件中删除LinearLayout和FrameLayout标记时,一切都运行得很好,正如邮件中所讨论的,答案如下: 您的活动axml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:id="@+id/maintActivity_drawerlayout">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/frameLayout_viewForFragments" />
<android.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:id="@+id/maintActivity_navigationView"
app:menu="@menu/left_menus" />
</android.support.v4.widget.DrawerLayout>