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

Activity之间通过Intent传递值，支持基本数据类型和String对象及它们的数组对象byte、byte[]、char、char[]、boolean、boolean[]、short、short[]、int、int[]、long、long[]、float、float[]、double、double[]、String、String[]，还有实现Serializable、Parcelable接口的类对象。

 

下面重点介绍Serializable,Parcelable。

 

package com.ray; import android.os.Parcel; import android.os.Parcelable; public class Book implements Parcelable { private String bookName; private String bookPublish; private int price; public static final Parcelable.Creator<Book> CREATOR = new Creator<Book>() { @Override public Book createFromParcel(Parcel source) { // TODO Auto-generated method stub Book mBook = new Book(); mBook.bookName = source.readString(); mBook.bookPublish = source.readString(); mBook.price = source.readInt(); return mBook; } @Override public Book[] newArray(int size) { // TODO Auto-generated method stub return new Book[size]; } }; @Override public int describeContents() { // TODO Auto-generated method stub return 0; } @Override public void writeToParcel(Parcel dest, int flags) { // TODO Auto-generated method stub dest.writeString(bookName); dest.writeString(bookPublish); dest.writeInt(price); } public void setBookName(String bookName) { this.bookName = bookName; } public String getBookName() { return bookName; } public void setBookPublish(String bookPublish) { this.bookPublish = bookPublish; } public String getBookPublish() { return bookPublish; } public void setPrice(int price) { this.price = price; } public int getPrice() { return price; } }

 

package com.ray; import java.io.Serializable; public class Music implements Serializable { /** * */ private static final long serialVersionUID = 11212L; private String name; private String singer; private int time; public void setSinger(String singer) { this.singer = singer; } public String getSinger() { return singer; } public void setTime(int time) { this.time = time; } public int getTime() { return time; } public void setName(String name) { this.name = name; } public String getName() { return name; } }

 

package com.ray; import android.app.Activity; import android.os.Bundle; import android.widget.TextView; public class PActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); TextView mTextView = new TextView(this); Book mBook = (Book) getIntent().getParcelableExtra( TestIntentActivity.P_KEY); mTextView.setText(""+mBook.getBookName()+" "+mBook.getBookPublish()+" "+mBook.getPrice()); setContentView(mTextView); } }

 

package com.ray; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.widget.TextView; public class SActivity extends Activity { private static final String TAG = "SActivity"; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); TextView mTextView = new TextView(this); Music music = (Music) getIntent().getSerializableExtra(TestIntentActivity.S_KEY); mTextView.setText(""+music.getName()+""+music.getSinger()+""+music.getTime()); Log.e(TAG, "11111111111111"+music.getName()); setContentView(mTextView); } }

 

package com.ray; 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 TestIntentActivity extends Activity { public final static String S_KEY = "com.ray.skey"; public final static String P_KEY = "com.ray.pkey"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); initButton(); } private void initButton() { Button sButton = (Button) findViewById(R.id.sButton); Button pButton = (Button) findViewById(R.id.pButton); sButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub serializeMethod(); } }); pButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub parcelableMethod(); } }); } public void serializeMethod() { Music music = new Music(); music.setName("111"); music.setSinger("222"); music.setTime(3); Intent mIntent = new Intent(TestIntentActivity.this, SActivity.class); Bundle mbundle = new Bundle(); mbundle.putSerializable(S_KEY, music); mIntent.putExtras(mbundle); startActivity(mIntent); } public void parcelableMethod() { Book mBook = new Book(); mBook.setBookName("11"); mBook.setBookPublish("22"); mBook.setPrice(20); Intent mIntent = new Intent(TestIntentActivity.this, PActivity.class); Bundle mBundle = new Bundle(); mBundle.putParcelable(P_KEY, mBook); mIntent.putExtras(mBundle); startActivity(mIntent); } }

 

 

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.ray" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".TestIntentActivity" 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=".SActivity" /> <activity android:name=".PActivity"></activity> </application> </manifest>