Android Intent传递对象的两种方法(Serializable,Parcelable)详细介绍

android intent传递对象的两种方法(serializable,parcelable)详细介绍

今天要给大家讲一下android中intent中如何传递对象,就我目前所知道的有两种方法，一种是bundle.putserializable(key,object);另一种是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，为了让大家更容易理解我还是照常写了一个简单的demo,大家就一步一步跟我来吧！

第一步:新建一个android工程命名为objecttrandemo(类比较多哦!)目录结构如下图:

第二步:修改main.xml布局文件(这里我增加了两个按钮)代码如下

<?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 wei'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>  

第三步:新建两个类一个是person.java实现serializable接口，另一个book.java实现parcelable接口，代码分别如下:

person.java:

package com.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; 
  } 
   
} 

book.java:

package com.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<book> creator = new creator<book>() { 
    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); 
  } 
} 

第四步: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:,代码分别如下：

objecttrandemo.java:

package com.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(); 
     
  } 
   
  //我的一贯作风呵呵 
  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(); 
    } 
  } 
} 

objecttrandemo1.java:

package com.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() + "/n"+ 
        "you age is: " + mperson.getage()); 
     
    setcontentview(mtextview); 
  } 
} 

objecttrandemo2.java:

package com.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()+"/n"+ 
             "author is: " + mbook.getauthor() + "/n" + 
             "publishtime is: " + mbook.getpublishtime()); 
    setcontentview(mtextview); 
  } 
} 

第五步:比较重要的一步啦，修改androidmanifest.xml文件（将两个新增的activity，objecttrandemo1,objecttrandemo2)申明一下代码如下(第14，15行):

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
   package="com.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=".objecttrandemo1"></activity> 
    <activity android:name=".objecttrandemo2"></activity> 
  </application> 
  <uses-sdk android:minsdkversion="7" /> 
</manifest>  

第六步:运行上述工程查看效果图啦:

效果1：首界面:

效果2:点击serializable按钮

效果3:点击parcelable按钮:

感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！