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：

[xhtml]
view plaincopyprint?

<?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>

[java] 
view plaincopyprint?

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:

[java]
view plaincopyprint?

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); } }

[java] 
view plaincopyprint?

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:

[java]
view plaincopyprint?

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); } }

[java] 
view plaincopyprint?

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):

[xhtml]
view plaincopyprint?

<?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~