Android高手进阶教程(十七)之---Android中Intent传递对象的两种方法(Serializable,Parcelable)!

大家好，好久不见，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view plaincopy to clipboardprint?
<?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>  
<?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:

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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;  
    }  
      
} 
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:

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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);  
    }  
} 
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:

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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();  
        }  
    }  
} 
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:

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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);  
    }  
} 
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:

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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);  
    }  
} 
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):

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<?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>  
<?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:

 

OK~今天就先到这里了，大家如果要嫌代码过长，不想敲的话，可以留下Email.俺给你邮过去，呵呵~希望对大家 有点小帮助 ，bye~

 

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/Android_Tutor/archive/2010/07/16/5740845.aspx

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/Android_Tutor/archive/2010/07/16/5740845.aspx