Android系列之Intent传递对象的几种实例方法

　在android中intent传递对象主要有2种方式分别是，bundle.putserializable(key,object)和bundle.putparcelable(key, object);当然这些object是有一定的条件的，前者是实现了serializable接口，而后者是实现了parcelable接口，以下是我为大家做的一个实例
　　首先我们建立一个工程项目命名为：objecttestdemo
　　然后我们再修改main.xml布局文件，主要增加2个按钮
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　　< ?xml version="1.0" encoding="utf-8"?>

　　< linearlayout xmlns:android="http://schemas.android.com/apk/res/android"

　　android:orientation="vertical"

　　android:layout_width="fill_parent"

 　　android:layout_height="fill_parent"

 　　>

 　　< textview

 　　android:layout_width="fill_parent"

 　　android:layout_height="wrap_content"

 　　android:text="welcome to mr jesson's blog."

 　　/>

 　　< button

 　　android:id="@+id/button1"

 　　android:layout_width="fill_parent"

 　　android:layout_height="wrap_content"

 　　android:text="serializable"

 　　/>

 　　< button

 　　android:id="@+id/button2"

 　　android:layout_width="fill_parent"

 　　android:layout_height="wrap_content"

 　　android:text="parcelable"

 　　/>

 　　< /linearlayout>

 　　< ?xml version="1.0" encoding="utf-8"?>

 　　< linearlayout xmlns:android="http://schemas.android.com/apk/res/android"

 　　android:orientation="vertical"

 　　android:layout_width="fill_parent"

 　　android:layout_height="fill_parent"

 　　>

 　　< textview

 　　android:layout_width="fill_parent"android:layout_height="wrap_content"

 　　android:text="welcome to mr jesson's blog."

 　　/>

 　　< button

 　　android:id="@+id/button1"

 　　android:layout_width="fill_parent"

 　　android:layout_height="wrap_content"

 　　android:text="serializable"

 　　/>

 　　< button

 　　android:id="@+id/button2"

 　　android:layout_width="fill_parent"

 　　android:layout_height="wrap_content"

 　　android:text="parcelable"

 　　/>

 　　< /linearlayout>
  [code]
接下来我们开始对工程进行实现，分别建立person.java实现serializable接口，另一个book.java实现parcelable接口

[code]
package com.test.objecttran;

import java.io.serializable;

public class person implements serializable {

private static final long serialversionuid = -7060210544600464481l;

private string name;

 private int age;

 public string getname() {

 return name;

 }

 public void setname(string name) {

 this.name = name;

 }

 public int getage() {

 return age;

 }

 public void setage(int age) {

 this.age = age;

 }

 }

package com.test.tutor.objecttran;

import java.io.serializable;

public class person implements serializable {

private static final long serialversionuid = -7060210544600464481l;

private string name;

 private int age;

 public string getname() {

 return name;

 }

 public void setname(string name) {

 this.name = name;

 }

 public int getage() {

 return age;

 }

 public void setage(int age) {

 this.age = age;

 }

 }

package com.test.tutor.objecttran;

 

import android.os.parcel;

import android.os.parcelable;

public class book implements parcelable {

 private string bookname;

 private string author;

 private int publishtime;

 public string getbookname() {

 return bookname;

 }

 public void setbookname(string bookname) {

 this.bookname = bookname;

 }

 public string getauthor() {

 return author;

 }

 public void setauthor(string author) {

 this.author = author;

 }

 public int getpublishtime() {

 return publishtime;

 }

 public void setpublishtime(int publishtime) {

 this.publishtime = publishtime;

 }

 public static final parcelable.creator creator = new creator() {

 public book createfromparcel(parcel source) {

 book mbook = new book();

 mbook.bookname = source.readstring();

 mbook.author = source.readstring();

 mbook.publishtime = source.readint();

 return mbook;

 }

 public book[] newarray(int size) {

 return new book[size];

 }

 };

 public int describecontents() {

 return 0;

 }

 public void writetoparcel(parcel parcel, int flags) {

 parcel.writestring(bookname);

 parcel.writestring(author);

 parcel.writeint(publishtime);

 }

 }

package com.test.tutor.objecttran;

import android.os.parcel;

import android.os.parcelable;

public class book implements parcelable {

private string bookname;

 private string author;

 private int publishtime;

 public string getbookname() {

 return bookname;

 }

 public void setbookname(string bookname) {this.bookname = bookname;

 }

 public string getauthor() {

 return author;

 }

 public void setauthor(string author) {

 this.author = author;

 }

 public int getpublishtime() {

 return publishtime;

 }

 public void setpublishtime(int publishtime) {

 this.publishtime = publishtime;

 }

 public static final parcelable.creator creator = new creator() {

 public book createfromparcel(parcel source) {

 book mbook = new book();

 mbook.bookname = source.readstring();

 mbook.author = source.readstring();

 mbook.publishtime = source.readint();

 return mbook;

 }

 public book[] newarray(int size) {

 return new book[size];

 }

 };

 public int describecontents() {

 return 0;

 }

 public void writetoparcel(parcel parcel, int flags) {

 parcel.writestring(bookname);

 parcel.writestring(author);

 parcel.writeint(publishtime);

 }

 }

修改objecttrandemo.java,并且新建两个activity,一个是objecttrandemo1.java,别一个是objecttrandemo2.java.分别用来显示person对像数据，和book对象数据

代码

package com.test.tutor.objecttran;

   　　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 objecttrandemo extends activity implements onclicklistener {

 　　private button sbutton,pbutton;

 　　public final static string ser_key = "com.tutor.objecttran.ser";

 　　public final static string par_key = "com.tutor.objecttran.par";

 public void oncreate(bundle savedinstancestate) {

 　　super.oncreate(savedinstancestate);

 　　setcontentview(r.layout.main);

 　　setupviews();

 　　}

 
 　　public void setupviews(){

 　　sbutton = (button)findviewbyid(r.id.button1);

 　　pbutton = (button)findviewbyid(r.id.button2);

 　　sbutton.setonclicklistener(this);

 　　pbutton.setonclicklistener(this);

 　　}

 　　//serializeable传递对象的方法

 　　public void serializemethod(){

 　　person mperson = new person();

 　　mperson.setname("frankie");

 　　mperson.setage(25);

 　　intent mintent = new intent(this,objecttrandemo1.class);

 　　bundle mbundle = new bundle();

 　　mbundle.putserializable(ser_key,mperson);

 　　mintent.putextras(mbundle);

 　　startactivity(mintent);

 　　}

 　　//pacelable传递对象方法

 　　public void pacelablemethod(){

 　　book mbook = new book();

 　　mbook.setbookname("android tutor");

 　　mbook.setauthor("frankie");

 　　mbook.setpublishtime(2010);

 　　intent mintent = new intent(this,objecttrandemo2.class);

 　　bundle mbundle = new bundle();

 　　mbundle.putparcelable(par_key, mbook);

 　　mintent.putextras(mbundle);

 　　startactivity(mintent);

 　　}

 　　//铵钮点击事件响应

 　　public void onclick(view v) {

 　　if(v == sbutton){

 　　serializemethod();

　　}else{

　　pacelablemethod();

　　}

　　}

　　}

代码

package com.test.tutor.objecttran;

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 objecttrandemo extends activity implements onclicklistener {

 

 private button sbutton,pbutton;

 public final static string ser_key = "com.tutor.objecttran.ser";

 public final static string par_key = "com.tutor.objecttran.par";

 public void oncreate(bundle savedinstancestate) {

 super.oncreate(savedinstancestate);

 setcontentview(r.layout.main);

 setupviews();

 }

 public void setupviews(){

 sbutton = (button)findviewbyid(r.id.button1);

 pbutton = (button)findviewbyid(r.id.button2);

 sbutton.setonclicklistener(this);

 pbutton.setonclicklistener(this);

 }

 //serializeable传递对象的方法

 public void serializemethod(){

 person mperson = new person();

 mperson.setname("frankie");

 mperson.setage(25);

 intent mintent = new intent(this,objecttrandemo1.class);

 bundle mbundle = new bundle();

 mbundle.putserializable(ser_key,mperson);

 mintent.putextras(mbundle);

 startactivity(mintent);

 }

 //pacelable传递对象方法

 public void pacelablemethod(){

 book mbook = new book();

 mbook.setbookname("android tutor");

 mbook.setauthor("frankie");

 mbook.setpublishtime(2010);

 intent mintent = new intent(this,objecttrandemo2.class);

 bundle mbundle = new bundle();

 mbundle.putparcelable(par_key, mbook);

 mintent.putextras(mbundle);

 startactivity(mintent);

 }

 //铵钮点击事件响应

 public void onclick(view v) {

 if(v == sbutton){

 serializemethod();

 }else{

 pacelablemethod();

 }

 }

 }

代码

 package com.test.tutor.objecttran;

  　　import android.app.activity;
      import android.os.bundle;
  　  import android.widget.textview;

  　　public class objecttrandemo1 extends activity {

  　　@override

 　　public void oncreate(bundle savedinstancestate) {

　　super.oncreate(savedinstancestate);

 　　textview mtextview = new textview(this);

 　　person mperson = (person)getintent().getserializableextra(objecttrandemo.ser_key);

 　　mtextview.settext("you name is: " + mperson.getname() + ""+

 　　"you age is: " + mperson.getage());

 　　setcontentview(mtextview);

 　　}

代码

package com.test.tutor.objecttran;

import android.app.activity;

import android.os.bundle;

import android.widget.textview;

public class objecttrandemo1 extends activity {

 @override

 public void oncreate(bundle savedinstancestate) {

 super.oncreate(savedinstancestate);

 textview mtextview = new textview(this);

 person mperson = (person)getintent().getserializableextra(objecttrandemo.ser_key);

 mtextview.settext("you name is: " + mperson.getname() + ""+

 "you age is: " + mperson.getage());

 setcontentview(mtextview);

 }

 }

代码

package com.test.tutor.objecttran;

import android.app.activity;

import android.os.bundle;

import android.widget.textview;

public class objecttrandemo2 extends activity {

 public void oncreate(bundle savedinstancestate) {

 super.oncreate(savedinstancestate);

 textview mtextview = new textview(this);

 book mbook = (book)getintent().getparcelableextra(objecttrandemo.par_key);

 mtextview.settext("book name is: " + mbook.getbookname()+""+

 "author is: " + mbook.getauthor() + "" +

 "publishtime is: " + mbook.getpublishtime());　setcontentview(mtextview);

 }

 }

　package com.test.tutor.objecttran;

　　import android.app.activity;

　　import android.os.bundle;

　　import android.widget.textview;

　　public class objecttrandemo2 extends activity {

 　　public void oncreate(bundle savedinstancestate) {

 　　super.oncreate(savedinstancestate);

 　　textview mtextview = new textview(this);

 　　book mbook = (book)getintent().getparcelableextra(objecttrandemo.par_key);

 　　mtextview.settext("book name is: " + mbook.getbookname()+""+

 　　"author is: " + mbook.getauthor() + "" +

 　　"publishtime is: " + mbook.getpublishtime());

 　　setcontentview(mtextview);

 　　}

 　　}

下面是最重要的环节：修改androidmanifest.xml文件(将两个新增的activity，objecttestdemo1,objecttestdemo2)申明一下代码如下(第14，15行):

代码

< ?xml version="1.0" encoding="utf-8"?>

< manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.test.tutor.objecttran"

android:versioncode="1"

android:versionname="1.0">

 < application android:icon="@drawable/icon" android:label="@string/app_name">

 < activity android:name=".objecttrandemo"

 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=".objecttestdemo1">< /activity>

 < activity android:name=".objecttestdemo2">< /activity>

 < /application>

 < uses-sdk android:minsdkversion="7" />

 < /manifest>

 < ?xml version="1.0" encoding="utf-8"?>

 < manifest xmlns:android="http://schemas.android.com/apk/res/android"

 package="com.test.tutor.objecttran"

 android:versioncode="1"

 android:versionname="1.0">

 < application android:icon="@drawable/icon" android:label="@string/app_name">

 < activity android:name=".objecttrandemo"

 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=".objecttestdemo1">< /activity>

 < activity android:name=".objecttestdemo2">< /activity>

 < /application>

 < uses-sdk android:minsdkversion="7" />

 < /manifest>