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Android 高手进阶教程:[15]传递对象方法,大家好,好久不见,今天要给大家讲一下Adroid中Itet中如何传递对象,就我目前所知道的有两种方法,一种是Budle.utSerializaleKey,Oject另一种是Budle.utParcelaleKey,Oject当然这些Oject是有一定的条件的,前者是实现了Serializale...
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!方法/步骤1新建一个 Android 工程命名为 ObjectTranDemo(类比较多哦!)目录结构如下图:步骤阅读2修改main.xml布局文件(这里我增加了两个按钮)代码如下viewplaincopy to clipboardprint?3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:view plaincopy to clipboardprint?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:view plaincopy to clipboardprint?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 = newCreator() { 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 CREATOR = newCreator() { 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);}}4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:view plaincopy to clipboardprint?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(); }5}}ObjectTranDemo1.java:view plaincopy to clipboardprint?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:view plaincopy to clipboardprint?package com.tutor.objecttran;import android.app.Activity;6import 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); }}7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):view plaincopy to clipboardprint? 8运行上述工程查看效果图啦:首界面步骤阅读9点击Serializable 按钮步骤阅读10点击 Parcelable 按钮:步骤阅读ENDAndroid高手进阶教程(共15篇)上一篇:BaseAdapter
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