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：

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<?xmlversion="1.0"encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical"android:layout_width="fill_parent"android:layout_height="fill_parent"><TextViewandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:text="WelcometoMrwei'sblog."/><Buttonandroid:id="@+id/button1"android:layout_width="fill_parent"android:layout_height="wrap_content"android:text="Serializable"/><Buttonandroid: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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packagecom.tutor.objecttran;importjava.io.Serializable;publicclassPersonimplementsSerializable{privatestaticfinallongserialVersionUID=-7060210544600464481L;privateStringname;privateintage;publicStringgetName(){returnname;}publicvoidsetName(Stringname){this.name=name;}publicintgetAge(){returnage;}publicvoidsetAge(intage){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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packagecom.tutor.objecttran;importandroid.os.Parcel;importandroid.os.Parcelable;publicclassBookimplementsParcelable{privateStringbookName;privateStringauthor;privateintpublishTime;publicStringgetBookName(){returnbookName;}publicvoidsetBookName(StringbookName){this.bookName=bookName;}publicStringgetAuthor(){returnauthor;}publicvoidsetAuthor(Stringauthor){this.author=author;}publicintgetPublishTime(){returnpublishTime;}publicvoidsetPublishTime(intpublishTime){this.publishTime=publishTime;}publicstaticfinalParcelable.Creator<Book>CREATOR=newCreator<Book>(){publicBookcreateFromParcel(Parcelsource){BookmBook=newBook();mBook.bookName=source.readString();mBook.author=source.readString();mBook.publishTime=source.readInt();returnmBook;}publicBook[]newArray(intsize){returnnewBook[size];}};publicintdescribeContents(){return0;}publicvoidwriteToParcel(Parcelparcel,intflags){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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packagecom.tutor.objecttran;importandroid.app.Activity;importandroid.content.Intent;importandroid.os.Bundle;importandroid.view.View;importandroid.view.View.OnClickListener;importandroid.widget.Button;publicclassObjectTranDemoextendsActivityimplementsOnClickListener{privateButtonsButton,pButton;publicfinalstaticStringSER_KEY="com.tutor.objecttran.ser";publicfinalstaticStringPAR_KEY="com.tutor.objecttran.par";publicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.main);setupViews();}//我的一贯作风呵呵publicvoidsetupViews(){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publicvoidSerializeMethod(){PersonmPerson=newPerson();mPerson.setName("frankie");mPerson.setAge(25);IntentmIntent=newIntent(this,ObjectTranDemo1.class);BundlemBundle=newBundle();mBundle.putSerializable(SER_KEY,mPerson);mIntent.putExtras(mBundle);startActivity(mIntent);}//Pacelable传递对象方法publicvoidPacelableMethod(){BookmBook=newBook();mBook.setBookName("AndroidTutor");mBook.setAuthor("Frankie");mBook.setPublishTime(2010);IntentmIntent=newIntent(this,ObjectTranDemo2.class);BundlemBundle=newBundle();mBundle.putParcelable(PAR_KEY,mBook);mIntent.putExtras(mBundle);startActivity(mIntent);}//铵钮点击事件响应publicvoidonClick(Viewv){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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packagecom.tutor.objecttran;importandroid.app.Activity;importandroid.os.Bundle;importandroid.widget.TextView;publicclassObjectTranDemo1extendsActivity{@OverridepublicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);TextViewmTextView=newTextView(this);PersonmPerson=(Person)getIntent().getSerializableExtra(ObjectTranDemo.SER_KEY);mTextView.setText("Younameis:"+mPerson.getName()+"/n"+"Youageis:"+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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packagecom.tutor.objecttran;importandroid.app.Activity;importandroid.os.Bundle;importandroid.widget.TextView;publicclassObjectTranDemo2extendsActivity{publicvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);TextViewmTextView=newTextView(this);BookmBook=(Book)getIntent().getParcelableExtra(ObjectTranDemo.PAR_KEY);mTextView.setText("Booknameis:"+mBook.getBookName()+"/n"+"Authoris:"+mBook.getAuthor()+"/n"+"PublishTimeis:"+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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<?xmlversion="1.0"encoding="utf-8"?><manifestxmlns:android="http://schemas.android.com/apk/res/android"package="com.tutor.objecttran"android:versionCode="1"android:versionName="1.0"><applicationandroid:icon="@drawable/icon"android:label="@string/app_name"><activityandroid:name=".ObjectTranDemo"android:label="@string/app_name"><intent-filter><actionandroid:name="android.intent.action.MAIN"/><categoryandroid:name="android.intent.category.LAUNCHER"/></intent-filter></activity><activityandroid:name=".ObjectTranDemo1"></activity><activityandroid:name=".ObjectTranDemo2"></activity></application><uses-sdkandroid: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~

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