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

本文主要是介绍Serializable,Parcelable的使用。

参考文章：http://my.oschina.net/xsjayz/blog/76906

http://blog.csdn.net/Android_Tutor/article/details/5740845

使用Bundle在Activity之间交换数据：

1)、Intent：主要通过Intent这个信使，将需要交换的数据放入即可。Intent提供了方法用于携带数据，如：

putExtras(Bundle data)：向Intent中放入需要携带的数据；

2)、Bundle：就是一个简单的数据包，该Bundle对象包含了多个方法来存入、取出数据，有：

putXxx(String key, Xxx data)：向Bundle放入Int、Long等各种类型的数据；

putSerializable(String key, Serializable data)：向Bundle放入一个可序列化的对象；

getXxx(String key)：从Bundle取出Int、Long等各种类型的数据；

getSerializable(String key)：从Bundle取出一个可序列化的对象。

实例一：注册用户信息

项目简介：程序包含两个Activity，一个给用户填写信息，另一个显示注册结果。

1.RegisterActivity.java

public class RegisterActivity extends Activity {

    private Button regButton;
    private EditText nameEdit;
    private EditText passwdEdit;
    private RadioButton maleButton;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        regButton = (Button) findViewById(R.id.register_now);
        nameEdit = (EditText) findViewById(R.id.name_edit);
        passwdEdit = (EditText) findViewById(R.id.password_edit);
        maleButton = (RadioButton) findViewById(R.id.male_btn);

        regButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {

                String name = nameEdit.getText().toString();
                String passwd = passwdEdit.getText().toString();
                String gender = maleButton.isChecked() ? "男" : "女";

                // 如果输入信息不完整，则不允许注册。
                if (name.equals("") || passwd.equals("")) {
                    Toast.makeText(RegisterActivity.this, "请填写完整的信息！",Toast.LENGTH_SHORT)
                            .show();
                } else {
                    // 创建Person对象，一个可序列化的对象。
                    Person person = new Person(name, passwd, gender);

                    Bundle bundle = new Bundle();
                    bundle.putSerializable("person", person);

                    Intent intent = new Intent(RegisterActivity.this,
                            ResultActivity.class);
                    intent.putExtras(bundle);
                    // 启动另一个Activity。
                    startActivity(intent);
                }
            }
        });
    }
}

2.ResultActivity.java

public class ResultActivity extends Activity {

    private TextView nameText;
    private TextView passwdText;
    private TextView genderText;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.result);

        nameText = (TextView) findViewById(R.id.name_text);
        passwdText = (TextView) findViewById(R.id.passwd_text);
        genderText = (TextView) findViewById(R.id.gender_text);

        // 获取启动该ResultActivity的Intent
        Intent intent = getIntent();
        // 获取该Intent所携带的数据
        Bundle bundle = intent.getExtras();
        // 从bundle数据包中取出数据
        Person person = (Person) bundle.getSerializable("person");

        // 显示注册结果
        nameText.setText("您的帐号：" + person.getName());
        passwdText.setText("您的密码：" + person.getPasswd());
        genderText.setText("您的性别：" + person.getGender());
    }
}

3.Person.java

public class Person implements Serializable {

    private static final long serialVersionUID = 1L;
    private String name;
    private String passwd;
    private String gender;

    public Person(String name, String passwd, String gender) {
        this.name = name;
        this.passwd = passwd;
        this.gender = gender;
    }

    public String getName() {
        return name;
    }

    public String getPasswd() {
        return passwd;
    }

    public String getGender() {
        return gender;
    }
}

4.布局文件（1）：main.xml

<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="请输入您的注册信息"
        android:textSize="20sp" />

    <TableRow>

        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="用户名"
            android:textSize="16sp" />

        <EditText
            android:id="@+id/name_edit"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:hint="请输入用户名"
            android:selectAllOnFocus="true" />
    </TableRow>

    <TableRow>

        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="密码"
            android:textSize="16sp" />

        <EditText
            android:id="@+id/password_edit"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:hint="请输入密码"
            android:password="true"
            android:selectAllOnFocus="true" />
    </TableRow>

    <TableRow>

        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="性别"
            android:textSize="16sp" />

        <RadioGroup
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <RadioButton
                android:id="@+id/male_btn"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="男"
                android:checked="true"
                android:textSize="16sp" />

            <RadioButton
                android:id="@+id/female_btn"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="女"
                android:textSize="16sp" />
        </RadioGroup>
    </TableRow>

    <Button
        android:id="@+id/register_now"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="注册"
        android:textSize="16sp" />

</TableLayout>

布局文件（2）：result.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/name_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="18sp" />

    <TextView
        android:id="@+id/passwd_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="18sp" />

    <TextView
        android:id="@+id/gender_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="18sp" />

</LinearLayout>

5.配置文件AndroidManifest.xml注册Activity组件

实例二：主要是介绍Serializable,Parcelable的具体应用

1.ObjectTranDemo.java

public class ObjectTranDemo extends Activity implements OnClickListener {  

    private Button sButton,pButton;  
    public  final static String SER_KEY = "ser";  
    public  final static String PAR_KEY = "par";  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);     
        setupViews();          
    }  

    //设置监听
    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("lucky");  
        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 first code");  
        mBook.setAuthor("lucky");  
        mBook.setPublishTime(2014);  
        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();  
        }  
    }  
}

2.ObjectTranDemo1.java

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);  
    }  
}

3.ObjectTranDemo2.java

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);  
    }  
}

4.Person.xml

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;  
    }  

}

5.Book.xml

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);  
    }  
}

6.布局文件main.xml

<?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="Bundle传值的两种方式"  
    android:layout_marginTop="40dip"
    android:gravity="center"
    android:textSize="22dip"
    />  
<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>

7.配置文件AndroidManifest.xml

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

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