I have the following scenario: an abstract class "ListItem" and the "HeadingItem" and "Contact" classes.
The relationship between them is as follows:
...
}
abstract class ListItem{
}
class HeadingItem implements ListItem{
String heading;
HeadingItem(this.heading);
}
class Contact implements ListItem{
Contact(this.id,this.name,this.email,this.phone);
String id;
String name;
String email;
String phone;
}
I have created the following scenario, where I create a List<ListItem> mixedList containing objects of type "Contact" and type "HeadingItem":
void funcao(){
...
List<ListItem> mixedList;
mixedList.add(Contact("1","nome1","email1","phone1"));
mixedList.add(Contact("2","nome2","email2","phone2"));
mixedList.add(Contact("3","nome3","email3","phone3"));
mixedList.add(HeadingItem("testeHeading"));
...
}
In possession of this List<ListItem> mixedList , I execute the following iteration:
void funcao(){
...
for(int i = 0 ; i < mixedList.length ; i++){
if(mixedList[i] is Contact){
print(mixedList[i].name);
}
}
...
}
The compiler neither compiles, stating "The getter 'name'isn't defined for the class ListItem".
From my point of view this should not happen, since there is a code from the flutter docs itself that creates a similar scenario.
Given this result, I attempted a casting, where the compiler no longer acknowledges error in mixedList[i].name but in the debug window it does not even appear any print:
void funcao(){
...
for(int i = 0 ; i < mixedList.length ; i++){
if(mixedList[i] is Contact){
print((mixedList[i] as Contact).name);
}
}
...
}
Given all this, I ask how do I use mixedList[i].name ?