android - Failed to find provider info for pioperation.tregliapi.computercomesifa.SolutionProvider -


i have search page called "searchitem" on i've implemented searchdialog. when try search between suggestions, android keeps on complaining saying:

failed find provider info pioperation.tregliapi.computercomesifa.solutionprovider

my androidmanifest.xml following:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="pioperation.tregliapi.computercomesifa" >      <application         android:allowbackup="true"         android:icon="@mipmap/ic_launcher"         android:label="@string/app_name"         android:theme="@style/apptheme" >         <activity             android:name=".mainpage"             android:label="@string/app_name" >             <intent-filter>                 <action android:name="android.intent.action.main" />                 <category android:name="android.intent.category.launcher" />             </intent-filter>          </activity>         <activity android:name=".searchitem"             android:label="cerca il problema"             android:theme="@style/apptheme">               <meta-data android:name="android.app.default_searchable"                 android:value=".searchbackend" />          </activity>          <activity android:name=".searchbackend"             android:label="cerca il problema">              <intent-filter>                 <action android:name ="android.intent.action.search" />             </intent-filter>              <meta-data android:name="android.app.searchable"                 android:resource="@xml/searchable"/>         </activity>          <provider android:name="pioperation.tregliapi.computercomesifa.solutionprovider"             android:authorities="pioperation.tregliapi.computercomesifa"             android:exported="true">         </provider>          <activity android:name=".visualizeitem"             android:label="visualizza le soluzioni presenti"             android:theme="@style/apptheme">          </activity>     </application> 

and solutionprovider package is:

pioperation.tregliapi.computercomesifa; 

i don't know i'm wrong can't understand...


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