Can't get List<Foo> from Hawk.get

[dos1in]

Hi there,
I defined a Class named Foo.

public class Foo {

    private String carSeries;
    private Uri carImageUri;
    private String carType;


    public String getCarSeries() {
        return carSeries;
    }

    public void setCarSeries(String carSeries) {
        this.carSeries = carSeries;
    }

    public Uri getCarImageUri() {
        return carImageUri;
    }

    public void setCarImageUri(Uri carImageUri) {
        this.carImageUri = carImageUri;
    }

    public String getCarType() {
        return carType;
    }

    public void setCarType(String carType) {
        this.carType = carType;
    }

    @Override
    public String toString() {
        return "Foo{" +
            "carSeries='" + carSeries + '\'' +
            ", carImageUri=" + carImageUri +
            ", carType='" + carType + '\'' +
            '}';
    }
}

List<Foo> foos = new ArrayList<Foo>();
foos.add(new Foo());
foos.add(new Foo());
Hawk.put(Constant.PREF_FOO, foos);

but Hawk.get(Constant.PREF_FOO, new ArrayList<Foo>()); always return list which size is 0(default value).

[LinkOut]

Returns zero because of the "new"

Hawk.get(Constant.PREF_FOO, new ArrayList()); <- This is wrong, because the proper way to get back your "foos" is this:

List < Foo > foos = Hawk.get(Constant.PREF_FOO);

Check the doc.

[dos1in]

Hawk.get(Constant.PREF_FOO, new ArrayList()); <- I need the default value.
Hawk.get(Constant.PREF_FOO); <- return null.

I think it's the Uriclass causes the Gson can't deserialize the Foo object.
When I removed it, it's gonna be right.

[LinkOut]

hmm if i understand well you try to do something like this?

• Hawk.get(Constant.PREF_FOO, new ArrayList()); <- get the default value
• Maybe if the default value is 0 you just "put" your foo's Hawk.put(Constant.PREF_FOO, foos);
• You try to retrieve the foos back with something like: List < Foo > foos = Hawk.get(Constant.PREF_FOO); (after you put them) and the size is 0?

[dos1in]

yep, i put the list which size is 2.
The Uri field cause Hawk.get always return the 0 size list(default value).

[orhanobut]

I haven't tried yet but gson apparently can't serialize and deserialize everything due to immutability, I'll find another parse approach. I have the same problem with joda time.

Work around could be to use transient keyword for Uri to avoid it being serialized/deserialized for now.

[LinkOut]

In alternative to GSON i recommend Jackson

[orhanobut]

I'll create another issue for different converters. I'm closing this issue.