Intent传递对象

使用Intent传递对象数据时，可以使用Intent.putSerializable(Key,Object)和Intent.putParcelable(Key, Object)两种方法，而要传递的对象类型必须实现Serializable接口或者Parcelable接口。

下面给出两种实现方式。

实现Serializable接口方式：

public class Person implements Serializable {
	private String name;

	public String getName() {
		return name;
	}

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

	@Override
	public String toString() {
		return name;
	}
}

MainActivity中onCreate方法中 传递数据代码：

Intent intent = new Intent(this, OtherActivity.class);
Bundle bundle = new Bundle();
Person p = new Person();
p.setName("baidu");
bundle.putSerializable("person", p);
intent.putExtras(bundle);
startActivity(intent);

在OtherActivity中取出数据：

Person p = (Person) intent.getSerializableExtra("person");

实现Parcelable接口方式：

先看下Parcelable的介绍：

Interface for classes whose instances can be written to and restored from a Parcel. Classes implementing the Parcelable interface must also have a static field called CREATOR, which is an object implementing the Parcelable.Creator interface.

public class Person implements Parcelable {
	private String name;

	public String getName() {
		return name;
	}

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

	@Override
	public String toString() {
		return name;
	}

	public static final Parcelable.Creator<Person> CREATOR = new Creator<Person>() {
		public Person createFromParcel(Parcel source) {
			Person p = new Person();
			p.name = source.readString();
			return p;
		}

		public Person[] newArray(int size) {
			return new Person[size];
		}
	};

	@Override
	public int describeContents() {
		return 0;
	}
<pre code_snippet_id="651272" snippet_file_name="blog_20150423_4_7200848" name="code" class="java">//最近开发中遇到个问题正是 Creator和writeToParcel()方法作怪。

//当在封装的bean中某些字段没有执行writeToParcel()方法中的dest.writeXXX()方法时，使用Intent在传递时，getIntent是拿不到的。

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

MainActivity中onCreate方法中 传递数据代码：

Intent intent = new Intent(this, OtherActivity.class);
Bundle bundle = new Bundle();
Person p = new Person();
p.setName("baidu");
bundle.putParcelable("person", p);
intent.putExtras(bundle);
startActivity(intent);

在OtherActivity中取出数据：

Person p = intent.getParcelableExtra("person");

附上一篇学习intent博客

http://blog.youkuaiyun.com/loongggdroid/article/details/17887975