android - Why everytime I click on delete chat message the app stop working? -

every time when click on delete chat message, app stop working. did check code based on errors got i'm still not sure what's wrong code.

    @override     public boolean onoptionsitemselected(menuitem item) {         switch (item.getitemid()) {            case r.id.action_delete:              getcontentresolver().delete(uri.withappendedpath(contentprovider.content_uri_messages_chat, profilechatid), null, null);              getcontentresolver().delete(uri.withappendedpath(contentprovider.content_uri_profile, profileid), null, null);                                  finish();         return super.onoptionsitemselected(item);      } 

below chat menu layout.

<menu xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto">        <item         android:id="@+id/action_delete"         android:showasaction="always"         android:icon="@android:drawable/ic_menu_delete"         android:title="@string/delete_chat"/>   </menu> 

these errors get.

java.lang.illegalargumentexception: unsupported uri: content://com.example.app.provider/messages/chat/              @ com.example.app.dataprovider.delete(dataprovider.java:189)              @ android.content.contentprovider$transport.delete(contentprovider.java:273)              @ android.content.contentresolver.delete(contentresolver.java:1282)              @ com.example.app.chatactivity.onoptionsitemselected(chatactivity.java:158)              @ android.app.activity.onmenuitemselected(activity.java:2600)              @ android.support.v4.app.fragmentactivity.onmenuitemselected(fragmentactivity.java:350)              @ com.android.internal.policy.impl.phonewindow.onmenuitemselected(phonewindow.java:1012)              @ com.android.internal.view.menu.menubuilder.dispatchmenuitemselected(menubuilder.java:742)              @ com.android.internal.view.menu.menuitemimpl.invoke(menuitemimpl.java:152)              @ com.android.internal.view.menu.menubuilder.performitemaction(menubuilder.java:881)              @ com.android.internal.view.menu.actionmenuview.invokeitem(actionmenuview.java:546)              @ com.android.internal.view.menu.actionmenuitemview.onclick(actionmenuitemview.java:115)              @ android.view.view.performclick(view.java:4438)              @ android.view.view$performclick.run(view.java:18422)              @ android.os.handler.handlecallback(handler.java:733)              @ android.os.handler.dispatchmessage(handler.java:95)              @ android.os.looper.loop(looper.java:136)              @ android.app.activitythread.main(activitythread.java:5017)              @ java.lang.reflect.method.invokenative(native method)              @ java.lang.reflect.method.invoke(method.java:515)              @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:779)              @ com.android.internal.os.zygoteinit.main(zygoteinit.java:595)              @ dalvik.system.nativestart.main(native method)

data provider.java

@override  	public int delete(uri uri, string selection, string[] selectionargs) {  		sqlitedatabase db = dbhelper.getwritabledatabase();  		  		int count;  		switch(urimatcher.match(uri)) {  		case messages_allrows:  			count = db.delete(table_messages, selection, selectionargs);  			break;			  			  		case messages_single_row:  			count = db.delete(table_messages, "_id = ?", new string[]{uri.getlastpathsegment()});  			break;    		case profile_allrows:  			count = db.delete(table_profile, selection, selectionargs);  			break;			  			  		case profile_single_row:  			count = db.delete(table_profile, "_id = ?", new string[]{uri.getlastpathsegment()});  			break;  			  		case messages_chat_row:  			count = db.delete(table_messages, "to_cid = ? or ( from_cid = ? , to_cid = ?)", new string[]{uri.getlastpathsegment(),uri.getlastpathsegment(), common.getchatid()});  			log.d("count del", ""+count);  			break;  			  		default:  			throw new illegalargumentexception("unsupported uri: " + uri);			  		}          contentresolver cr = getcontext().getcontentresolver();          cr.notifychange(uri, null);    		return count;  	}