How to serialize null value when using Parcelable interface

Question

regarding my code example down, what shold I do if one Locable\'s variables is null? In example, now if l.getZoom() returns null, I got NullPointerException.

Answer 1

This is the solution I came up with to write strings safely:

private void writeStringToParcel(Parcel p, String s) {
    p.writeByte((byte)(s != null ? 1 : 0));
    p.writeString(s);
}

private String readStringFromParcel(Parcel p) {
    boolean isPresent = p.readByte() == 1;
    return isPresent ? p.readString() : null;
}