zoukankan      html  css  js  c++  java
  • Activity中通过Bundle传递自定义数据类型

    在Android开发中,有时候需要从一个Activity中传递数据到另一个Activity中,在Bundle中已经封装好了简单数据类型,例如String ,int ,float等。但是如果我们想要传递一个复杂的数据类型,比如一个Book对象,该怎么办呢?
            仔细的看了一下Bundle中的方法,其中有一个是putSerializable()方法,Serializable对象是一个可恢复对象接口,我们只需要让Book对象实现Serializable接口,就可以使用Bundle.putSerializable()方法传递Book对象了。废话不多说了,现将代码贴上:
    Book类:

    package com.bundletest.model.fneg; 
    
    import java.io.Serializable;
    
      /** 
      *@Copyright:Copyright (c) 2008 - 2100 
      *@Company:Sagret
      *@Author:fengcunhan fengcunhan@gmail.com 
      *@Package:com.bundletest.model.fneg 
      *@FileName:Book.java
      *@Time:2010-12-19 
      *@User:feng
      */
      public class Book implements Serializable {     private static final long serialVersionUID = 1L;     private String name;     private String id;     private String author;

      public String getName() {     return name;   }
      public void setName(String name) {     this.name = name;   }
      public String getId() {     return id;   }
      
      public void setId(String id) {     this.id = id;   }

      public String getAuthor() {     return author;   }

      public void setAuthor(String author) {     this.author = author;   } }

    实例化Book类,得到Book对象book以及设置成员变量:

    if(TextUtils.isEmpty(bookName)||TextUtils.isEmpty(author)||TextUtils.isEmpty(id)){
      Toast.makeText(AndroidBundleActivity.this, "输入框不能为空", Toast.LENGTH_SHORT).show();
    }else{
      Book book=new Book();
      book.setName(bookName);
      book.setAuthor(author);
      book.setId(id);
      Intent intent=new Intent(AndroidBundleActivity.this,RecieveActivity.class);   Bundle bundle=new Bundle();   bundle.putSerializable("book", book);   intent.putExtras(bundle);
      startActivity(intent); }

      在另一个Activity中获取传递过来的book对象,并显示:

    Intent intent=this.getIntent();
    Bundle bundle=intent.getExtras();
    
    Book book=(Book)bundle.getSerializable("book");
    nameText.setText("书名:"+book.getName());
    authorText.setText("作者:"+book.getAuthor());
    idText.setText("ID:"+book.getId());
    

     

     

  • 相关阅读:
    C# get和set
    动手学pytorch-优化算法
    动手学pytorch-梯度下降
    动手学pytorch-凸优化
    动手学pytorch-Batch Norm
    动手学pytorch-经典卷积神经网络模型
    动手学pytorch-卷积神经网络基础
    动手学pytorch-Transformer代码实现
    动手学pytorch-机器翻译
    动手学pytorch-循环神经网络进阶
  • 原文地址:https://www.cnblogs.com/DswCnblog/p/2766223.html
Copyright © 2011-2022 走看看