I have a List of Strings in my Object :
public ArrayList<String> trailersURLs = new ArrayList<>();
If need to save String I use
@Column(name = "trailer")
public String trailerUrl;
But how i can save(actually annotate) List<String> via ActiveAndroid?
You can replace your collection with array and make specific TypeSerializer, for example saving to db with json format.
more information github.com/pardom/ActiveAndroid/wiki/Type-serializers
public class MyClassArraySerializer extends TypeSerializer {
private static final Gson gson = new Gson();
@Override
public Class<?> getDeserializedType() {
return MyClass[].class;
}
@Override
public Class<?> getSerializedType() {
return String.class;
}
@Override
public Object serialize(final Object o) {
if (null == o) return null;
final String json = gson.toJson(o);
return json;
}
@Override
public Object deserialize(final Object o) {
if (null == o) return null;
final MyClass[] myClassItems = gson.fromJson(o.toString(), MyClass[].class);
return myClassItems;
}
}
See my answer here
Just use List< String> list = new ArrayList<>();
No need to worry about to create other objects.
For me this is the easiest way to save List< String> in ActiveAndroid
public class ListGsonSerializer extends TypeSerializer {
private final static Gson gson = new Gson();
@Override
public Class<?> getDeserializedType() {
return List.class;
}
@Override
public Class<?> getSerializedType() {
return String.class;
}
@Override
public String serialize(Object data) {
if (null == data )
return null;
return gson.toJson(data);
}
@Override
public List<String> deserialize(Object data) {
if (null == data)
return null;
List<String> stringList = new ArrayList<>();
stringList = gson.fromJson(data.toString(), List.class);
return stringList;
}
}
