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

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！

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