Intent传递对象，有两种方法

1. 实现Serializable接口

类要生成序列化ID，并且不能是内部类

2. 实现Parcelable接口

参照Parcelable的doc文档

实现Serializable接口的代码如下：

public class Person implements Serializable

{

private static final long serialVersionUID = -4520602519989894109L;

String name;

String age;

public Person(String name, String age)

{

super();

this.name = name;

this.age = age;

}

@Override

public String toString()

{

return "Person [name=" + name + ", age=" + age + "]";

}

}

从A启动B，通过intent传递person对象过去

private void startNewActivity()

{

Intent intent = new Intent();

intent.setClass(MainActivity.this, SecondActivity.class);

String name = etname.getText().toString();

String age = etage.getText().toString();

//用intent传递对象，那个类要实现序列化接口

Person person = new Person(name, age);

intent.putExtra(constant.PERSON, person);

startActivity(intent);

}

在B中得到A传过来的对象

@Override

protected void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_second);

TextView textView = (TextView) findViewById(R.id.textView1);

Intent intent = getIntent();

Person person = (Person) intent.getSerializableExtra(constant.PERSON);

textView.setText(person.toString());

}

实现Parcelable接口的代码如下：

public class Person implements Parcelable

{

String name;

String age;

// 参照Parcelable的doc文档

public int describeContents()

{

return 0;

}

public void writeToParcel(Parcel out, int flags)

{

out.writeString(name);// 写跟下面的读顺序要一样

out.writeString(age);

}

public static final Parcelable.Creator CREATOR = new Parcelable.Creator()

{

public Person createFromParcel(Parcel in)

{

return new Person(in);

}

public Person[] newArray(int size)

{

return new Person[size];

}

};

public Person(String name, String age)

{

super();

this.name = name;

this.age = age;

}

public Person(Parcel in)

{

name = in.readString();// 读跟上面的写顺序要一样

age = in.readString();

}

@Override

public String toString()

{

return "Person [name=" + name + ", age=" + age + "]";

}

@Override

public int hashCode()

{

final int prime = 31;

int result = 1;

result = prime * result + ((age == null) ? 0 : age.hashCode());

result = prime * result + ((name == null) ? 0 : name.hashCode());

return result;

}

@Override

public boolean equals(Object obj)

{

if (this == obj)

return true;

if (obj == null)

return false;

if (getClass() != obj.getClass())

return false;

Person other = (Person) obj;

if (age == null)

{

if (other.age != null)

return false;

}

else if (!age.equals(other.age))

return false;

if (name == null)

{

if (other.name != null)

return false;

}

else if (!name.equals(other.name))

return false;

return true;

}

}

在B中得到从A传来的对象

@Override

protected void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_second);

TextView textView = (TextView) findViewById(R.id.textView1);

Intent intent = getIntent();

Person person = (Person) intent.getParcelableExtra(constant.PERSON);

textView.setText(person.toString());

}