Hi there,
I am hitting a brickwall with serialization of a subclass of Location
(probably more a Java question actuall, but let's try anyway).
Location is not serializable.
I have a first subclass called FALocation that does not have any
instance variables. I have declared it serializable.
Then I have a second class called Waypoint that looks like this:
public class Waypoint extends FALocation implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
/* Class variables
*******************************************************/
private static int CLASS_VERSION=1; //Used to version parcels
/* Instance variables
****************************************************/
private transient String type=DataHelper.PT_TYPE_US;
private transient String country;
private transient String name=null;
private transient String description=null;
private transient int elevation = 0;
private transient int population = 0; // Afterthought, added
to match the DB structure
/* Constructors
**********************************************************/
public Waypoint() {
super();
}
public Waypoint(double lat, double lon, String name, String
description) {
super(lat, lon);
this.setName(name);
this.setDescription(description);
}
public Waypoint(Location l) {
super(l);
}
public Waypoint(String provider) {
super(provider);
}
/* Implementing serializable */
private void writeObject(java.io.ObjectOutputStream out)
throws IOException {
Log.v("DroidFA", "Serialising \"%s\" (v%d).",
Waypoint.class.getSimpleName(), CLASS_VERSION);
out.writeInt(CLASS_VERSION);
out.writeObject(type);
out.writeObject(country);
out.writeObject(name);
out.writeObject(description);
out.writeInt(elevation);
out.writeInt(population);
}
private void readObject(java.io.ObjectInputStream in) throws
IOException, ClassNotFoundException {
int serialClassVersion = in.readInt();
Log.v("DroidFA", "Deserialising \"%s\" (v%d).",
Waypoint.class.getSimpleName(),serialClassVersion);
type = (String) in.readObject();
country = (String) in.readObject();
name = (String) in.readObject();
description = (String) in.readObject();
elevation = in.readInt();
population = in.readInt();
}
}
Serialization works fine.
Deseriamization produces the followwing exception (the leg object
contains a waypoint).:
10-05 13:50:35.259: WARN/System.err(7867):
java.io.InvalidClassException: android.location.Location;
IllegalAccessException
10-05 13:50:35.267: WARN/System.err(7867): at
java.io.ObjectInputStream.resolveConstructorClass(ObjectInputStream.java:
2010)
10-05 13:50:35.267: WARN/System.err(7867): at
java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:2095)
10-05 13:50:35.267: WARN/System.err(7867): at
java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:
929)
10-05 13:50:35.267: WARN/System.err(7867): at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:2285)
10-05 13:50:35.278: WARN/System.err(7867): at
java.io.ObjectInputStream.readObject(ObjectInputStream.java:2240)
10-05 13:50:35.278: WARN/System.err(7867): at
com.droidfa.navigation.Leg.readObject(Leg.java:262)
.../...
Any help will be greatly appreciated.
Many thanks in advance,
Jean-Michel
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