Android筆記之Intent傳遞自訂對象

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import java.util.List;import android.os.Parcel;import android.os.Parcelable;/** * 1）writeToParcel 方法。該方法將類的資料寫入外部提供的Parcel中。 * 2）describeContents方法。直接返回0就可以。 * 3）靜態Parcelable.Creator<T>介面，本介面有兩個方法： * createFromParcel(Parcel in) 實現從in中建立出類的執行個體的功能。 * newArray(int size) 建立一個類型為T，長度為size的數組， returnnew T[size];即可。本方法是供外部類還原序列化本類數組使用。 *  * @author JL */public class ViewPoint implements Parcelable {        private String v_name;        private List<String> v_picture;            private List<String> v_description;    /**     * 這一步read的順序要和writeToParcel的順序保持一致     * @param parcel     */    private ViewPoint(Parcel parcel) {        // TODO Auto-generated constructor stub        v_name=parcel.readString();        v_description=parcel.readArrayList(List.class.getClassLoader());        v_picture=parcel.readArrayList(List.class.getClassLoader());        //List<String> :parcel.readArrayList(List.class.getClassLoader())        //Map<String, String> :parcel.readHashMap(Map.class.getClassLoader())        //List<School> :parcel.readArrayList(School.class.getClassLoader())        //School :(School) parcel.readParcelable(School.class.getClassLoader())    }    public ViewPoint() {        // TODO Auto-generated constructor stub    }    public static final Parcelable.Creator<ViewPoint> CREATOR=new Parcelable.Creator<ViewPoint>() {        @Override        public ViewPoint createFromParcel(Parcel source) {            // TODO Auto-generated method stub            return new ViewPoint(source);        }        @Override        public ViewPoint[] newArray(int size) {            // TODO Auto-generated method stub            return new ViewPoint[size];        }    };        public String getV_name() {        return v_name;    }    public void setV_name(String v_name) {        this.v_name = v_name;    }    public List<String> getV_picture() {        return v_picture;    }    public void setV_picture(List<String> v_picture) {        this.v_picture = v_picture;    }    public List<String> getV_description() {        return v_description;    }    public void setV_description(List<String> v_description) {        this.v_description = v_description;    }    @Override    public int describeContents() {        // TODO Auto-generated method stub        return 0;    }    @Override    public void writeToParcel(Parcel dest, int flags) {        // TODO Auto-generated method stub        //向Parcel對象寫入要序列化的資料        //List一律寫成 :writeList        //School :writeParcelable(schoolInfo, arg1),且School本身是Parcelable對象        dest.writeString(v_name);        dest.writeList(v_description);        dest.writeList(v_picture);    }}

 

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