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Android中如何使用Intent在Activity之间传递对象[使用Serializable或者Parcelable]

發布時間：2025/4/16 Android 22 豆豆

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Android中如何使用Intent在Activity之間傳遞對象[使用Serializable或者Parcelable]

????? 在Android中的不同Activity之間傳遞對象，我們可以考慮采用Bundle.putSerializable(Key,Object);也可以考慮采用Bundle.putParcelable(Key, Object);其中前面一種方法中的Object要實現Serializable接口，后面一種方法中的Object要實現Parcelable接口。下面我們以一個完整的例子來說明。

1.新建一個Android的工程，其中該工程的目錄結構如下圖：

2. 修改main.xml布局文件。布局文件的源碼如下：

[c-sharp]?view plaincopy

<?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="@string/hello"??

????/>??

????<Button??

???????android:id="@+id/serButton"??

???????android:layout_width="fill_parent"??

???????android:layout_height="wrap_content"??

???????android:text="Serializable"/>??

????<Button??

???????android:id="@+id/parButton"??

???????android:layout_width="fill_parent"??

???????android:layout_height="wrap_content"??

???????android:text="Parcelable"/>??

</LinearLayout>??

3.在工程的src目錄下新建一個實體類包，命名為com.andy.entity.同時在該package中添加兩個實體類，一個是Person.java，該類實現Serializable接口；一個是Police.java，該類實現Parcelable接口。代碼分別如下：

Person.java:

[c-sharp]?view plaincopy

package?com.andy.entity;??

import?java.io.Serializable;??

public?class?Person?implements?Serializable?{??

??????

????private?static?final?long?serialVersionUID?=?-6919461967497580385L;??

??????

????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;??

????}??

}??

Police.java:

[c-sharp]?view plaincopy

package?com.andy.entity;??

import?android.os.Parcel;??

import?android.os.Parcelable;??

public?class?Police?implements?Parcelable?{??

??????

????private?String?name;??

????private?int?workTime;??

????public?String?getName()?{??

????????return?name;??

????}??

????public?void?setName(String?name)?{??

????????this.name?=?name;??

????}??

????public?int?getWorkTime()?{??

????????return?workTime;??

????}??

????public?void?setWorkTime(int?workTime)?{??

????????this.workTime?=?workTime;??

????}??

??????

????public?static?final?Parcelable.Creator<Police>?CREATOR?=?new?Creator<Police>()?{??

????????@Override??

????????public?Police?createFromParcel(Parcel?source)?{??

????????????Police?police?=?new?Police();??

????????????police.name?=?source.readString();??

????????????police.workTime?=?source.readInt();??

????????????return?police;??

????????}??

????????@Override??

????????public?Police[]?newArray(int?size)?{??

????????????return?new?Police[size];??

????????}??

????};??

????@Override??

????public?int?describeContents()?{??

????????return?0;??

????}??

????@Override??

????public?void?writeToParcel(Parcel?parcel,?int?flags)?{??

????????parcel.writeString(name);??

????????parcel.writeInt(workTime);??

????}??

}??

4.在包com.andy.testdemo中修改TestActivity.java類，同時在該包中添加類SerializableDemo和ParcelableDemo，分別繼承了Activity類和分別顯示Person對象和Police對象的數據。代碼如下：

[c-sharp]?view plaincopy

package?com.andy.testdemo;??

import?com.andy.entity.Person;??

import?com.andy.entity.Police;??

import?android.app.Activity;??

import?android.content.Intent;??

import?android.os.Bundle;??

import?android.view.View;??

import?android.widget.Button;??

public?class?TestActivity?extends?Activity?{??

????private?Button?sButton,pButton;??

????public?final?static?String?SER_KEY?=?"com.andy.ser";??

????public?final?static?String?PAR_KEY?=?"com.andy.par";??

??????

????/**?Called?when?the?activity?is?first?created.?*/??

????@Override??

????public?void?onCreate(Bundle?savedInstanceState)?{??

????????super.onCreate(savedInstanceState);??

????????setContentView(R.layout.main);??

??????????

????????sButton?=?(Button)findViewById(R.id.serButton);??

????????sButton.setOnClickListener(new?View.OnClickListener()?{??

??????????????

????????????@Override??

????????????public?void?onClick(View?v)?{??

????????????????SerializeMethod();??

????????????}??

????????});??

??????????

????????pButton?=?(Button)findViewById(R.id.parButton);??

????????pButton.setOnClickListener(new?View.OnClickListener()?{??

??????????????

????????????@Override??

????????????public?void?onClick(View?v)?{??

????????????????PacelableMethod();??

????????????}??

????????});??

????}??

??????

????/**?

?????*?Serializeable傳遞對象的方法?

?????*/??

????private?void?SerializeMethod(){??

????????Person?mPerson?=?new?Person();?????

????????mPerson.setName("andy");?????

????????mPerson.setAge(26);?????

????????Intent?mIntent?=?new?Intent(this,SerializableDemo.class);?????

????????Bundle?mBundle?=?new?Bundle();?????

????????mBundle.putSerializable(SER_KEY,mPerson);?????

????????mIntent.putExtras(mBundle);?????

??????????

????????startActivity(mIntent);?????

????}??

??????

????/**?

?????*?Pacelable傳遞對象方法??

?????*/??

????private?void?PacelableMethod(){??

????????Police?mPolice?=?new?Police();?????

????????mPolice.setName("I?am?Police");????????

????????mPolice.setWorkTime(2008);?????

????????Intent?mIntent?=?new?Intent(this,ParcelableDemo.class);?????

????????Bundle?mBundle?=?new?Bundle();?????

????????mBundle.putParcelable(PAR_KEY,?mPolice);?????

????????mIntent.putExtras(mBundle);?????

???????

????????startActivity(mIntent);?????

????}??

}??

SerializableDemo.java類

[c-sharp]?view plaincopy

package?com.andy.testdemo;??

import?com.andy.entity.Person;??

import?android.app.Activity;??

import?android.os.Bundle;??

import?android.widget.TextView;??

public?class?SerializableDemo?extends?Activity?{??

????@Override??

????public?void?onCreate(Bundle?savedInstanceState)?{??

????????super.onCreate(savedInstanceState);??

??????????

????????TextView?mTextView?=?new?TextView(this);?????

????????Person?mPerson?=?(Person)getIntent().getSerializableExtra(TestActivity.SER_KEY);?????

????????mTextView.setText("You?name?is:?"?+?mPerson.getName()?+?"/n"+?????

??????????????????????????"You?age?is:?"?+?mPerson.getAge());?????

????????setContentView(mTextView);?????

????}??

}??

ParcelableDemo.java類：

[c-sharp]?view plaincopy

package?com.andy.testdemo;??

import?com.andy.entity.Police;??

import?android.app.Activity;??

import?android.os.Bundle;??

import?android.widget.TextView;??

public?class?ParcelableDemo?extends?Activity?{??

????@Override??

????public?void?onCreate(Bundle?savedInstanceState)?{??

????????super.onCreate(savedInstanceState);??

??????????

????????TextView?mTextView?=?new?TextView(this);?????

????????Police?mPolice?=?(Police)getIntent().getParcelableExtra(TestActivity.PAR_KEY);?????

????????mTextView.setText("Police?name?is:?"?+?mPolice.getName()+"/n"+?????

??????????????????????????"WorkTime?is:?"?+?mPolice.getWorkTime()?+?"/n");?????

????????setContentView(mTextView);?????

????}??

}??

5.在AndroidManifest.xml文件中為新添加的兩個Activity進行注冊。

[c-sharp]?view plaincopy

<?xml?version="1.0"?encoding="utf-8"?>??

<manifest?xmlns:android="http://schemas.android.com/apk/res/android"??

??????package="com.andy.testdemo"??

??????android:versionCode="1"??

??????android:versionName="1.0">??

????<application?android:icon="@drawable/icon"?android:label="@string/app_name">??

????????<activity?android:name=".TestActivity"??

??????????????????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=".SerializableDemo"/>??

????????<activity?android:name=".ParcelableDemo"/>??

????</application>??

????<uses-sdk?android:minSdkVersion="8"?/>??

</manifest>???

6.運行程序查看效果圖：

【1】主界面截圖：

【2】點擊Serializable按鈕的效果

【3】點擊Parcelable按鈕的效果

=========================================================================

以上是如何采用Intent在不同的Activity之間傳遞對象的例子。

轉載于:https://blog.51cto.com/7990064/1530479

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​Android中如何使用Intent在Activity之间传递对象[使用Serializable或者Parcelable]

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Android中如何使用Intent在Activity之间传递对象[使用Serializable或者Parcelable]