Create case comments in Salesforce1 app – with out coding!

https://kksfblog.wordpress.com/2015/07/20/create-case-comments-in-salesforce1-app-with-out-coding/

Get sObject type from the recordId

Map<String,String> keys = new Map<String,String>();
        Map<String,Schema.SobjectType> describe = Schema.getGlobalDescribe();
        for(String s:describe.keyset())
            keys.put(describe.get(s).getDescribe().getKeyPrefix(),s);
     
     
        system.debug('@@@@'+keys.get(String.valueOf(recordId).substring(0,3)));

How to Create Dependent Picklist fields In Lightning Component

http://www.sfdcmonkey.com/2017/02/18/dependent-picklist-fields-lightning-component/