VisualForce Page to Create the Object Dynamically

Page:

<apex:page controller="objectcreator"  sidebar="false" rendered="true" docType="html-5.0" tabStyle="ObjectCreator__tab" >
    <div style="float:right" >
  <!--    <apex:image value="{!$Resource.objectcreatorlogo}" height="100" width="1250" />  -->
  <apex:image value="{!$Resource.ObjectCreatorlogo2}" />
    </div>
    <div >
    <apex:form id="form" >
    <apex:pageBlock id="pgBlckId" >
    <h1>Enter Object Details </h1><br/><br/>
       <apex:panelGrid columns="2">
   
             <apex:outputLabel style="padding-left:22px;" styleClass="outputLabel" value="Object Name:" />
             <apex:inputText styleClass="inputText" value="{!Name}" id="ObjectName"/>
             <apex:outputLabel style="padding-left:75px;" styleClass="outputLabel" value="Label:"/>  
             <!-- <apex:inputText styleClass="inputText" value="{!Name}" id="Label" onclick="val()" />    -->
             <apex:input type="text" style="padding-left:19px;" styleClass="inputText"  id="Label" value="{!Label}"/>
             <apex:outputLabel styleClass="outputLabel" style="padding-left:16px;" value="Record Name:" />
             <apex:inputText styleClass="inputText" value="{!rname}" id="rname" html-placeholder="Account Name"/>                    
             <apex:outputLabel style="padding-left:47px;" styleClass="outputLabel" value="DataType:" />
             <apex:selectList value="{!DataType}" multiselect="false" size="1" >
                <apex:selectOption itemValue="Text" itemLabel="Text"/>
                <apex:selectOption itemValue="AutoNumber" itemLabel="Auto Number"/>
                <apex:actionSupport event="onchange" reRender="form" action="{!find}"/>
            </apex:selectList>
             
             <apex:outputLabel styleClass="outputLabel" style="padding-left:8px;" value="Display Format:" rendered="{!flag}" />
            <apex:inputText styleClass="inputText" value="{!dformat}" id="dformat" html-placeholder="A-{0000}" rendered="{!flag}" />    
             <apex:outputLabel styleClass="outputLabel" value="Starting Number:" rendered="{!flag}"/>
           <apex:inputText styleClass="inputText" value="{!sno}" id="sno" rendered="{!flag}" />    
             
         </apex:panelGrid>
         <div style="padding-left:110px;" >  
         <apex:commandButton style="background:black;width:150px;height:40px;color:white;font-size:12pt;"  action="{!createobject}" value="Create an Object" reRender="form" status="actStatusId" oncomplete="options('{!str}');" id="theButton"/>
            <apex:actionStatus id="actStatusId" >
                <apex:facet name="start" >
                  <img src="{!$Resource.Searching}" />                  
                </apex:facet>
            </apex:actionStatus>
         </div>
     
        <apex:pageMessages id="msg" ></apex:pageMessages>
         </apex:pageBlock>
               <p id="out"></p>
               <p id="demo" style="color:red;font-size:18pt;"></p>
               <p id="refresh"></p>    
    </apex:form>  
    </div>
    <script>
         function options(hi){
             if(hi.includes('errors=null')){
                 document.getElementById("demo").innerHTML='<h2>To Go to Object List page </h2><a style="text-decoration: none;" href="javascript:redirect();"><h3>clickhere</h3></a>';
                 document.getElementById("refresh").innerHTML='<h2>To Create New object </h2><a style="text-decoration: none;" href="javascript:refresh();"><h3>clickhere</h3></a>';
                 }        
            }
     </script>
      <script>
         function redirect(){
             window.open("/p/setup/custent/CustomObjectsPage?setupid=CustomObjects");
         }
     </script>
  <script>
    function refresh() {
       window.location.reload();
    }
</script>
<style>
 
    h1{
    color:#04cef7;
    width:150px;
    clear:left;
    font-size:15pt;
    }
    .outputLabel{
        font-size:12pt;
    }
 h2 {
    font-weight:bold;
    font-size:20px;
    color:green;
    clear: left;
    text-align:center;
    width:500px;
   }
a,h3{color:red;
        font-weight:bold;
        font-size:18px;
        text-decoration: none;}
</style>
</apex:page>

Controller:

public with sharing class objectcreator{

    public String sno { get; set; }

    public String dformat { get; set; }

    public String rname { get; set; }
    Public String Name {get; set;}
    Public String Label {get; set;}
    Public String DataType {get; set;}
    Public List<MetadataService.SaveResult> results {get;set;}
    public string str {get;set;}
    public Boolean flag {get;set;}
       
    public void createObject(){
 
        MetadataService.MetadataPort service = MetadataServiceExamples.createService();
        MetadataService.CustomObject customObject = new MetadataService.CustomObject();
        if(Name.length()<=0||Name=='') ApexPages.addmessage(new ApexPages.message(ApexPages.severity.WARNING,'Please enter Object Name '));
        else if(Label=='') ApexPages.addmessage(new ApexPages.message(ApexPages.severity.WARNING,'Please enter Label'));
        else if(rname=='') ApexPages.addmessage(new ApexPages.message(ApexPages.severity.WARNING,'Please enter Record Name'));
        else{  
        customObject.fullName =Name+'__c';
        customObject.label = Label ;
        customObject.pluralLabel = Label+'s';
        customObject.nameField = new MetadataService.CustomField();
        customObject.nameField.type_x = DataType;
        customObject.nameField.label = rname;
        customObject.deploymentStatus = 'Deployed';
        customObject.sharingModel = 'ReadWrite';
        try{
            results = service.createMetadata(new MetadataService.Metadata[] { customObject });
            system.debug('-------------'+results);
            MetadataServiceExamples.handleSaveResults(results[0]);
            str=string.valueof(results[0]);
            if(str.contains('errors=null')) { ApexPages.addMessage(new ApexPages.Message(ApexPages.severity.CONFIRM, 'Object Created Successfully!')); }
           }catch(exception e){
              string err=string.valueof(e);
                 if(err.contains('DUPLICATE_DEVELOPER_NAME')) ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Error,'Object name is already in use'));
                 else if(err.contains('FIELD_INTEGRITY_EXCEPTION')) ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Error,'Invalid Object name'));
                 //   ApexPages.addmessage(new ApexPages.message(ApexPages.severity.Error,'Invalid ObjectName or Label'));
            }
         }
      }
      public void find() {  
        if(DataType == 'AutoNumber') {
            flag=true;
        } else if(DataType == 'Text') {
            flag=false;
        }
    }
}


This code will work only if you have MetadataService class in your Org.
You can download it from this link:MetadataService.cls