Android中的可拆分和继承

这是我最好的解决方案，很高兴听到有人对此有所想法。

public abstract class A implements Parcelable {    private int a;    protected A(int a) {        this.a = a;    }    public void writeToParcel(Parcel out, int flags) {        out.writeInt(a);    }    protected A(Parcel in) {        a = in.readInt();    }}public class B extends A {    private int b;    public B(int a, int b) {        super(a);        this.b = b;    }    public static final Parcelable.Creator<B> CREATOR = new Parcelable.Creator<B>() {        public B createFromParcel(Parcel in) { return new B(in);        }        public B[] newArray(int size) { return new B[size];        }    };    public int describeContents() {        return 0;    }    public void writeToParcel(Parcel out, int flags) {        super.writeToParcel(out, flags);        out.writeInt(b);    }    private B(Parcel in) {        super(in);        b = in.readInt();    }}