Android进阶教程之---Android中Intent传递对象的两种方法(Seria

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

"1.0" encoding="utf-8"?>
""
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >

    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Welcome to Mr wei's blog."
    />

    android:id="@+id/button1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Serializable"
/>

    android:id="@+id/button2"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Parcelable"
/>

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns: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;
    }

}

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 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.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();
        }
    }
}

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);
    }
}

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);
    }
}

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):

"1.0" encoding="utf-8"?>
""
      package="com.tutor.objecttran"
      android:versionCode="1"
      android:versionName="1.0">
    "@drawable/icon" android:label="@string/app_name">
        ".ObjectTranDemo"
                  android:label="@string/app_name">

                "android.intent.action.MAIN" />
                "android.intent.category.LAUNCHER" />


        ".ObjectTranDemo1">
        ".ObjectTranDemo2">

    "7" />

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