Xamarin No resource found that matches the given name (at 'theme' with value '@style/DesignTheme'). App1.Droid

Question

I am new to Xamarin. So I started a shared project. Then I google some link to add material design and did the following.

1. I created the styles.xml.(I dont understand why the resources/value folder is not seen in visual studio but when I manually go the directory I could see so I created manually in there with the following content.

   <?xml version="1.0" encoding="UTF-8" ? >
   <resources>
       <style name="DesignTheme" parent="Theme.AppCompat.Light.DarkActionBar">
           <item name="windowNoTitle" >true </item >
           <item name="windowActionBar" >false </item >
           <item name="colorPrimary" >@color/primary </item >
           <item name="colorPrimaryDark" >@color/primary_dark </item >
           <item name="colorAccent" >@color/accent </item > 
       </style >
   </resources >
   

2. Next I change the manifest as below.I added this android:theme="@style/DesignTheme"

   <?xml version="1.0" encoding="utf-8"?>
   <manifest xmlns:android="http://schemas.android.com/apk/res/android">
       <uses-sdk android:minSdkVersion="15" />
       <application android:label="App1.Droid" android:theme="@style/DesignTheme"></application>
   </manifest>
   

3. I just tried to build and I got this error No resource found that matches the given name (at 'theme' with value '@style/DesignTheme'). but the manifest shows this now. Why is it different then in step 2?

   <?xml version="1.0" encoding="utf-8"?>
   <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="App1.Droid">
       <!--suppress UsesMinSdkAttributes-->
       <uses-sdk android:minSdkVersion="15" />
       <uses-permission android:name="android.permission.INTERNET" />
       <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
       <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
       <application android:label="App1.Droid" android:theme="@style/DesignTheme" android:name="android.app.Application" android:allowBackup="true" android:icon="@drawable/icon" android:debuggable="true">
           <activity android:configChanges="orientation|screenSize" android:icon="@drawable/icon" android:label="App1" android:name="md50170a25da682dd459b9251c65ebe3a7a.MainActivity">
               <intent-filter>
                   <action android:name="android.intent.action.MAIN" />
                   <category android:name="android.intent.category.LAUNCHER" />
               </intent-filter>
           </activity>
           <provider android:name="mono.MonoRuntimeProvider" android:exported="false" android:initOrder="2147483647" android:authorities="App1.Droid.mono.MonoRuntimeProvider.__mono_init__" />
           <!--suppress ExportedReceiver-->
           <receiver android:name="mono.android.Seppuku">
               <intent-filter>
                   <action android:name="mono.android.intent.action.SEPPUKU" />
                   <category android:name="mono.android.intent.category.SEPPUKU.App1.Droid" />
               </intent-filter>
           </receiver>
       </application>
   </manifest>
   

The full error is .

No resource found that matches the given name (at 'theme' with value '@style/DesignTheme'). App1.Droid C:\Users\ns\Documents\Visual Studio 2015\Projects\App1\App1\App1.Droid\obj\Debug\android\manifest\AndroidManifest.xml

Under the Nuget Package Manager I can see the installed list shows this Xamarin.Android.Support.Design is installed for version v24.2.1

Answer 1

in MainActivity, in

[Activity(Label = "appName", ScreenOrientation = Android.Content.PM.ScreenOrientation.Portrait, MainLauncher = true)]

Remove them.