java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference

Question

I\'m getting error when runtime my project.

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.olympic/com.prima.olympic.ProductD         


        

Answer 1

checkOrigin is null

String checkOrigin = i.getStringExtra("from_activity");
        if(checkOrigin!=null && checkOrigin.equals("shoppinglist")){
            btnAddtoShoppingList.setVisibility(View.GONE);
            btnDeleteShoppingList.setVisibility(View.VISIBLE);
        }