类实现Parcelable接口在Intent中传递

类实现了Parcelable接口就可以在Intent中传递   只要在类的定义中实现Parcelable接口

代码

 package entity;

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

 public class Person implements Parcelable {

     private int id;
     private String name;
     private String pass;

     public Person() {
         super();
         // TODO Auto-generated constructor stub
     }

     public Person(int id, String name, String pass) {
         super();
         this.id = id;
         this.name = name;
         this.pass = pass;
     }

     public int getId() {
         return id;
     }

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

     public String getName() {
         return name;
     }

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

     public String getPass() {
         return pass;
     }

     public void setPass(String pass) {
         this.pass = pass;
     }

     @Override
     public String toString() {
         return "Person [id=" + id + ", name=" + name + ", pass=" + pass + "]";
     }
          //----------实现内容描述
     @Override
     public int describeContents() {
         // TODO Auto-generated method stub
         return 0;
     }
        //-------------写入到包中    注意 写入顺序
     @Override
     public void writeToParcel(Parcel dest, int flags) {
         // TODO Auto-generated method stub
         dest.writeInt(id);
         dest.writeString(name);
         dest.writeString(pass);

     }
     // 添加一个静态成员,名为CREATOR,该对象实现了Parcelable.Creator接口
     public static final Parcelable.Creator<Person> CREATOR = new Creator<Person>() {

         @Override
         public Person[] newArray(int size) {
             // TODO Auto-generated method stub
             return new Person[size];
         }

         @Override
         public Person createFromParcel(Parcel source) {
             // 从Parcel中读取数据，返回person对象    --------------按顺序读
             return new Person(source.readInt(), source.readString(),
                     source.readString());
         }
     };

 }

Person