Android中Intent传递对象的两种方法(Serializable,Parcelable)

Activity之间通过Intent传递值，支持基本数据类型和String对象及它们的数组对象byte、byte[]、char、char[]、boolean、boolean[]、short、short[]、int、int[]、long、long[]、float、float[]、double、double[]、String、String[]，还有实现Serializable、Parcelable接口的类对象。

下面重点介绍Serializable,Parcelable。

package com.ray;

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

public class Book implements Parcelable {

	private String bookName;

	private String bookPublish;

	private int price;

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

		@Override
		public Book createFromParcel(Parcel source) {
			// TODO Auto-generated method stub
			Book mBook = new Book();
			mBook.bookName = source.readString();
			mBook.bookPublish = source.readString();
			mBook.price = source.readInt();

			return mBook;
		}

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

	};

	@Override
	public int describeContents() {
		// TODO Auto-generated method stub
		return 0;
	}

	@Override
	public void writeToParcel(Parcel dest, int flags) {
		// TODO Auto-generated method stub

		dest.writeString(bookName);
		dest.writeString(bookPublish);
		dest.writeInt(price);

	}

	public void setBookName(String bookName) {
		this.bookName = bookName;
	}

	public String getBookName() {
		return bookName;
	}

	public void setBookPublish(String bookPublish) {
		this.bookPublish = bookPublish;
	}

	public String getBookPublish() {
		return bookPublish;
	}

	public void setPrice(int price) {
		this.price = price;
	}

	public int getPrice() {
		return price;
	}

}

package com.ray;

import java.io.Serializable;

public class Music implements Serializable {
	
	/**
	 * 
	 */
	private static final long serialVersionUID = 11212L;

	private String name;
	private String singer;
	private int time;
	public void setSinger(String singer) {
		this.singer = singer;
	}
	public String getSinger() {
		return singer;
	}
	public void setTime(int time) {
		this.time = time;
	}
	public int getTime() {
		return time;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getName() {
		return name;
	}
	

}

package com.ray;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class PActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);

		TextView mTextView = new TextView(this);
		Book mBook = (Book) getIntent().getParcelableExtra(
				TestIntentActivity.P_KEY);
		mTextView.setText(""+mBook.getBookName()+" "+mBook.getBookPublish()+" "+mBook.getPrice());
		
		setContentView(mTextView);

	}

}

package com.ray;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

public class SActivity extends Activity {
	
	private static final String TAG = "SActivity";
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		
		TextView mTextView = new TextView(this);
		Music music = (Music) getIntent().getSerializableExtra(TestIntentActivity.S_KEY);
		
		mTextView.setText(""+music.getName()+""+music.getSinger()+""+music.getTime());
		
		Log.e(TAG, "11111111111111"+music.getName());
		 
		
		setContentView(mTextView);
	}

}

package com.ray;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class TestIntentActivity extends Activity {

	public final static String S_KEY = "com.ray.skey";

	public final static String P_KEY = "com.ray.pkey";

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		initButton();
	}

	private void initButton() {

		Button sButton = (Button) findViewById(R.id.sButton);
		Button pButton = (Button) findViewById(R.id.pButton);

		sButton.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub

				serializeMethod();
			}
		});

		pButton.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub

				parcelableMethod();
			}
		});

	}

	public void serializeMethod() {
		Music music = new Music();
		music.setName("111");
		music.setSinger("222");
		music.setTime(3);

		Intent mIntent = new Intent(TestIntentActivity.this, SActivity.class);
		Bundle mbundle = new Bundle();
		mbundle.putSerializable(S_KEY, music);
		mIntent.putExtras(mbundle);
		startActivity(mIntent);

	}

	public void parcelableMethod() {

		Book mBook = new Book();
		mBook.setBookName("11");
		mBook.setBookPublish("22");
		mBook.setPrice(20);

		Intent mIntent = new Intent(TestIntentActivity.this, PActivity.class);
		Bundle mBundle = new Bundle();
		mBundle.putParcelable(P_KEY, mBook);
		mIntent.putExtras(mBundle);

		startActivity(mIntent);

	}

}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
	package="com.ray" android:versionCode="1" android:versionName="1.0">


	<application android:icon="@drawable/icon" android:label="@string/app_name">
		<activity android:name=".TestIntentActivity" android:label="@string/app_name">
			<intent-filter>
				<action android:name="android.intent.action.MAIN" />
				<category android:name="android.intent.category.LAUNCHER" />
			</intent-filter>
		</activity>

		<activity android:name=".SActivity" />
		<activity android:name=".PActivity"></activity>
		

	</application>
</manifest>