Intent传递对象

Serializable对象的传递

Serializable即序列化，将对象转化成可存储与传输状态。

public class Student implements Serializable{
    String id;
    String name;
    String sex;

    public void setId(id){
        this.id = id;
    }

    public String getId(){
        return id;
    }

    public void setName(name){
        this.name = name;
    }

    public String getName(){
        return name;
    }

    public void setSex(sex){
        this.sex = sex;
    }

    public String getSex(){
        return sex;
    }
}

//传递数据
Student student = new Student();
student.setId("1");
student.setName("zs");
student.setSex("male");
Intent intent = new Intent(MainActivity.this,SecondActivity.class);
intent.putExtra("info",student);
startActivity(intent);


//取数据
Student student = (Student)getIntent().getSerializableExtra("info");

Parcelable对象的传递

Parcelable原理：将一个对象进行分解成Intent所支持的数据类型，然后再传递。

package com.app.model;

import android.os.Parcel;
import android.os.Parcelable;

/**
 * Created by Administrator on 16/4/20.
 */
public class Student implements Parcelable{

    private String id;
    private String name;


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(id);
        dest.writeString(name);
    }

    public static final Parcelable.Creator<Student> CREATOR = new   
      Parcelable.Creator<Student>(){

        @Override
        public Student createFromParcel(Parcel source) {
            Student student = new Student();
            student.setId(source.readString());
            student.setName(source.readString());
            return student;
        }

        @Override
        public Student[] newArray(int size) {
            return new Student[size];
        }
    };

}

---

//传递对象
Student student = new Student();
student.setId("001");
student.setName("zs");
Intent intent = new Intent(MainActivity.this,SecondActivity.class);
intent.putExtra("info",student);
startActivity(intent);

//获取对象
Intent intent = getIntent();
Student student =(Student)intent.getParcelableExtra("info");