Lightning:recordForm - Lightning Data Service

Lightning:recordForm is a very powerful component for editing, viewing and adding a record in lightning and combines both lightning:recordEditForm and lightning:recordViewForm.

Here is an example lightning component for lightning:recordForm.

Lightning Component:-

<aura:component implements="flexipage:availableForRecordHome,force:hasSObjectName,force:hasRecordId" access="global" >
    <aura:attribute name="fieldsList" type="String[]" default="['Id', 'Name', 'BillingAddress', 'Phone' , 'Type']"/>
    <div class="THIS">       
        <lightning:recordForm
                              recordId="{!v.recordId}"
                              objectApiName="{!v.sObjectName}"
                              fields="{!v.fieldsList}"
                              columns="2"
                              mode="View"
                              onsuccess="{!c.myAction}"/>
    </div>
</aura:component>

JavaScrip Controller:-

({
    myAction : function(component, event, helper) {
     var toastEvent = $A.get("e.force:showToast"); 
     toastEvent.setParams({ 
       "title": "Success!", 
       "message": "Record is successfully updated!", 
       "type": "success" 
     }); 
     toastEvent.fire();
    }

})

CSS:-

.THIS {
    background:white

}

OutCome:-

If you click on inline edit icon then action changes from Edit mode to View mode.