android - unsupported uri when accessing content provider -

edit java.lang.illegalargumentexception: unsupported uri: content://com.example.locationreminder.remindercontentprovider/items

shouldn't able pick whatever name want authority string? content uri?

i have following code:

   public class remindercontentprovider extends contentprovider {     private databasehelper mdbhelper;    public static final string authority = "com.example.locationreminder.remindercontentprovider";    public static final uri content_uri =  uri.parse("content://" + authority + "/items");    public static final string table_name = "reminder";    private static final int allrows = 1;    private static final int single_row = 2;     public static interface remindercolumns extends basecolumns {       public static final uri content_uri = remindercontentprovider.content_uri;       public static final string title = "title";       public static final string date = "date";       public static final string content_path = "items";       public static final string content_type = contentresolver.cursor_dir_base_type + "/vnd.locationreminder.items";       public static final string content_item_type = contentresolver.cursor_item_base_type + "/vnd.locationreminder.items";    }    static {     surimatcher = new urimatcher(urimatcher.no_match);     surimatcher.adduri(authority, remindercolumns.content_path, allrows);     surimatcher.adduri(authority, remindercolumns.content_path + "/#", single_row);   }  @override public boolean oncreate() {     mdbhelper = new databasehelper(getcontext());     return true; }  @override public string gettype(uri uri) {      switch(surimatcher.match(uri)) {     case allrows:         return remindercolumns.content_type;     case single_row:         return remindercolumns.content_item_type;     default:          throw new illegalargumentexception("unsupported uri: " + uri);     } }   @override public cursor query(uri uri, string[] projection, string selection,         string[] selectionargs, string sortorder) {      sqlitequerybuilder builder = new sqlitequerybuilder();         builder.settables(databasehelper.reminder_table_name);          switch (surimatcher.match(uri)) {            case allrows:               // nice ,               break;            case single_row:               // limit query 1 row @ most:               builder.appendwhere(remindercolumns._id + " = " + uri.getlastpathsegment());               break;            default:               throw new illegalargumentexception("unsupported uri: " + uri);         }         cursor cursor = builder.query(mdbhelper.getwritabledatabase(), projection, selection, selectionargs, null, null, sortorder);         // if want notified of changes:         cursor.setnotificationuri(getcontext().getcontentresolver(), uri);         return cursor;       } 

note: implemented insert(), update() , delete() aren't relevant error get.

the manifest file:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.locationreminder" android:versioncode="1" android:versionname="1.0" >  <uses-sdk     android:minsdkversion="15"     android:targetsdkversion="17" />  <application     android:allowbackup="true"     android:icon="@drawable/ic_launcher"     android:label="@string/app_name"     android:theme="@style/apptheme" >     <provider          android:name="com.example.locationreminder.remindercontentprovider"          android:authorities="com.example.locationreminder.remindercontentprovider"         android:singleuser="false" /> <!-- other users can't use provider -->     <activity         android:name="com.example.locationreminder.mainactivity"         android:theme="@android:style/theme.holo.light"         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="com.example.locationreminder.newreminderactivity"         android:label="@string/title_activity_new_reminder"         android:theme="@style/calendartheme.withactionbar" >     </activity> </application> 

edit

@override protected void oncreate(bundle savedinstancestate) {    super.oncreate(savedinstancestate);    settheme(android.r.style.theme_holo_light);    setcontentview(r.layout.activity_main);    cursor cursor = managedquery(remindercontentprovider.content_uri, null, null, null, null);     msimplecursoradapter = new specialadapter(this,      r.layout.row,              cursor,             new string[]{ databasehelper.key_id, databasehelper.key_title, databasehelper.key_date }             new int[] { r.id.titleid, r.id.datetimeorlocationid },                cursoradapter.flag_register_content_observer);     getloadermanager().initloader(0, null, this);    listview listview = (listview) findviewbyid(r.id.list);    listview.setadapter(msimplecursoradapter); } 

does error happen when switch (surimatcher.match(uri)) falls default case? if so, need pass uri matches allrows or single_row