IntentObjectActivity.java
package com.example.ch02_intentobjectdemo;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
public class IntentObjectActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_intent_object);
}
public void sendData(View view)
{
switch (view.getId())
{
case R.id.button1:
SerializableUser sUser=new SerializableUser("Admin","123456");
Intent intent=new Intent(this,ReceiveObjectActivity.class);
Bundle bundle=new Bundle();
bundle.putInt("type",1);
bundle.putSerializable("serial",sUser);
intent.putExtras(bundle);
startActivity(intent);
break;
case R.id.button2:
ParcelableUser pUser=new ParcelableUser("User","123456");
Intent intent1=new Intent(this,ReceiveObjectActivity.class);
Bundle bundle1=new Bundle();
bundle1.putInt("type",2);
bundle1.putParcelable("parcel",pUser);
intent1.putExtras(bundle1);
startActivity(intent1);
break;
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.intent_object, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
ParcelableUser.java
package com.example.ch02_intentobjectdemo;
import android.os.Parcel;
import android.os.Parcelable;
public class ParcelableUser implements Parcelable{
private String userName;
private String passWord;
public String getUserName()
{
return userName;
}
public void setUserName(String userName)
{
this.userName=userName;
}
public String getPassWord()
{
return passWord;
}
public void setPassWord(String passWord)
{
this.passWord=passWord;
}
public ParcelableUser(String userName,String passWord)
{
this.userName=userName;
this.passWord=passWord;
}
public ParcelableUser()
{
}
public int describeContents()
{
return 0;
}
public void writeToParcel(Parcel p,int arg1)
{
p.writeString(userName);
p.writeString(passWord);
}
public static final Parcelable.Creator<ParcelableUser> CREATOR=new Creator<ParcelableUser>()
{
public ParcelableUser createFromParcel(Parcel source)
{
ParcelableUser parcelableUser=new ParcelableUser();
parcelableUser.userName=source.readString();
parcelableUser.passWord=source.readString();
return parcelableUser;
}
public ParcelableUser[] newArray(int size)
{
return new ParcelableUser[size];
}
};
}
ReceiveObjectActivity.java
package com.example.ch02_intentobjectdemo;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class ReceiveObjectActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.objectreceiver);
TextView tv=(TextView)findViewById(R.id.showresult);
Bundle bundle=getIntent().getExtras();
int type=bundle.getInt("type");
if(type==1)
{
SerializableUser serializableUser=(SerializableUser)getIntent().getSerializableExtra("serial");
tv.setText(serializableUser.getUserName()+"\n"+serializableUser.getPassWord());
}
else
{
ParcelableUser parcelableUser=(ParcelableUser)getIntent().getParcelableExtra("serial");
tv.setText(parcelableUser.getUserName()+"\n"+parcelableUser.getPassWord());
}
}
}
SerializableUser.java
package com.example.ch02_intentobjectdemo;
import java.io.Serializable;
public class SerializableUser implements Serializable{
private String userName;
private String passWord;
public String getUserName()
{
return userName;
}
public void setUserName(String userName)
{
this.userName=userName;
}
public String getPassWord()
{
return passWord;
}
public void setPassWord(String passWord)
{
this.passWord=passWord;
}
public SerializableUser(String userName,String passWord)
{
this.userName=userName;
this.passWord=passWord;
}
}
activity_intent_object.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.ch02_intentobjectdemo.IntentObjectActivity"
android:orientation="vertical">
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/di"
android:onClick="sendData"/>
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/dui"
android:onClick="sendData"/>
</LinearLayout>
objectreceiver.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/showresult"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</LinearLayout>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">IntentObjectDemo</string>
<string name="hello_world">Hello world!</string>
<string name="action_settings">Settings</string>
<string name="di">传递Serializable对象</string>
<string name="dui">传递Parcelable对象</string>
</resources>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.ch02_intentobjectdemo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="21" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".IntentObjectActivity"
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=".ReceiveObjectActivity"
android:label="@string/app_name">
</activity>
</application>
</manifest>
程序运行如下:
当我按"传递Serializable对象"这个按钮时运行如下:
当我按"传递Parcelable对象"这个按钮时程序却崩溃了:
