zoukankan      html  css  js  c++  java
  • Activity Intent 传递参数之 Serializable

    一、创建 继承 Serializable的bean,增加一个唯一个序列化id  serialVersionUID

    作用是因为java  sdk会自动进行hash计算,并生成唯一的UID值。手动设置serialVersionUID的好处是当前class如果改变了成员变量,比如增加或者删除之后,这个UID是不改变的,那么反序列化就不会失败

    例如:

    public class BaseBean implements Serializable {
    private static final long serialVersionUID = 1L;
    public static final int TO_SEND = 0;
    public static final int SEND_REVIEW = 1;
    public static final int BATCH_OPERATION = 2;

    private int mType;
    private int mState;

    public BaseBean() {

    }

    /**
    * Structure function.
    *
    * @param type list type ex:TO_SEND.
    * @param state select state.
    */
    public BaseBean(int type, int state) {
    this.mType = type;
    this.mState = state;
    }

    public int getType() {
    return mType;
    }

    public void setType(int type) {
    this.mType = type;
    }

    public int getState() {
    return mState;
    }

    public void setState(int state) {
    this.mState = state;
    }
    }

    二、第一个activity 发送 Serializable对象
    BaseBean baseBean = new BaseBean();
    baseBean.setState(1);
    Intent intent = new Intent(this, BatchOperationActivity.class);
    intent.putExtra("baseBean", baseBean);
    startActivity(intent);

    三、第二个activity 接收 Serializable对象
    BaseBean baseBean = (BaseBean) intent.getSerializableExtra("baseBean");
  • 相关阅读:
    Git分支管理策略
    嵌入式文件系统构建工具 busybox / buildroot / openwrt
    nodejs与c语言交互应用实例
    python与c语言交互应用实例
    websocket programming base on nodejs
    Using Bluetooth LE with Go
    nodejs
    linux ipc/its
    SAMA5D3 Xplained Board
    BlueZ
  • 原文地址:https://www.cnblogs.com/adamli/p/13228933.html
Copyright © 2011-2022 走看看