Ah, I finally found the problem. There were two in fact.
- CREATOR must be public, not protected. But more importantly,
- You must call
setDataPosition(0)
after unmarshalling your data.
Here is the revised, working code:
public void testFoo() {
final Foo orig = new Foo("blah blah");
final Parcel p1 = Parcel.obtain();
final Parcel p2 = Parcel.obtain();
final byte[] bytes;
final Foo result;
try {
p1.writeValue(orig);
bytes = p1.marshall();
// Check to make sure that the byte stream seems to contain a Parcelable
assertEquals(4, bytes[0]); // Parcel.VAL_PARCELABLE
p2.unmarshall(bytes, 0, bytes.length);
p2.setDataPosition(0);
result = (Foo) p2.readValue(Foo.class.getClassLoader());
} finally {
p1.recycle();
p2.recycle();
}
assertNotNull(result);
assertEquals( orig.str, result.str );
}
protected static class Foo implements Parcelable {
public static final Parcelable.Creator<Foo> CREATOR = new Parcelable.Creator<Foo>() {
public Foo createFromParcel(Parcel source) {
final Foo f = new Foo();
f.str = (String) source.readValue(Foo.class.getClassLoader());
return f;
}
public Foo[] newArray(int size) {
throw new UnsupportedOperationException();
}
};
public String str;
public Foo() {
}
public Foo( String s ) {
str = s;
}
public int describeContents() {
return 0;
}
public void writeToParcel(Parcel dest, int ignored) {
dest.writeValue(str);
}
}