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

 

转载自 http://blog.csdn.net/xyz_lmn/article/details/5908355

 

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: