源码： http://download.csdn.net/detail/jzp12/4326106
本章是后面文章的基础，只涉及activity之间的跳转，不涉及activity之间参数传递。
1）在src下建立3个activity和在res/layout下建立3个xml分别是：
SwitchMulActivityActivity ---main.xml
Changshahome ---changshahome.xml
Shanghaihome ---shanghaihome.xml

注意事项：
1,xml文件的名称必须是小写
2,新建activity,SuperClass栏目中应该输入或者选择android.app.Activity
3,可通过自动在AndroidManifest.xml中添加两个activity，或者直接在AndroidManifest.xml添加代码实现。

2）直接上代码：
SwitchMulActivityActivity.java

package lostman.rigortek.china;import android.app.Activity;import android.os.Bundle;import android.widget.Button;import android.content.Intent;import android.view.View;public class SwitchMulActivityActivity extends Activity {private Button cbtGoChangsha;private Button cbtGoShanghai;    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                cbtGoChangsha = (Button) findViewById(R.id.gochangsha);        cbtGoShanghai = (Button) findViewById(R.id.goshanghai);                do{        if(null == cbtGoChangsha || null == cbtGoShanghai){        break;        }        cbtGoChangsha.setOnClickListener(new Button.OnClickListener() {//实现监听器接口的匿名内部类,其中监听器本身是View类的内部接口//实现接口必须实现的onClick方法@Overridepublic void onClick(View v) {Intent cSwitchIntent = new Intent();if(null != cSwitchIntent){cSwitchIntent.setClass(SwitchMulActivityActivity.this,Changshahome.class);startActivity(cSwitchIntent);//SwitchMulActivityActivity.this.finish();}}});                        cbtGoShanghai.setOnClickListener(new Button.OnClickListener() {//实现监听器接口的匿名内部类,其中监听器本身是View类的内部接口//实现接口必须实现的onClick方法@Overridepublic void onClick(View v) {Intent cSwitchIntent = new Intent();if(null != cSwitchIntent){cSwitchIntent.setClass(SwitchMulActivityActivity.this,Shanghaihome.class);startActivity(cSwitchIntent);//SwitchMulActivityActivity.this.finish();}}});        }while(false);    }}

Changshahome.java

package lostman.rigortek.china;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;public class Changshahome extends Activity {private Button cbtGoBasehome;private Button cbtGoShanghai;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);        setContentView(R.layout.changshahome);                cbtGoBasehome = (Button) findViewById(R.id.gobasehome);        cbtGoShanghai = (Button) findViewById(R.id.goshanghai);                do{        if(null == cbtGoBasehome ||null == cbtGoShanghai){        break;        }        cbtGoBasehome.setOnClickListener(new Button.OnClickListener() {//实现监听器接口的匿名内部类,其中监听器本身是View类的内部接口//实现接口必须实现的onClick方法@Overridepublic void onClick(View v) {Intent cSwitchIntent = new Intent();if(null != cSwitchIntent){cSwitchIntent.setClass(Changshahome.this, SwitchMulActivityActivity.class);startActivity(cSwitchIntent);//Changshahome.this.finish();}}});                        cbtGoShanghai.setOnClickListener(new Button.OnClickListener() {//实现监听器接口的匿名内部类,其中监听器本身是View类的内部接口//实现接口必须实现的onClick方法@Overridepublic void onClick(View v) {Intent cSwitchIntent = new Intent();if(null != cSwitchIntent){cSwitchIntent.setClass(Changshahome.this, Shanghaihome.class);startActivity(cSwitchIntent);//Changshahome.this.finish();}}});        }while(false);}}

Shanghaihome.java

package lostman.rigortek.china;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;public class Shanghaihome extends Activity {private Button cbtGoBasehome;private Button cbtGoShanghai;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.shanghaihome);cbtGoBasehome = (Button) findViewById(R.id.gobasehome);        cbtGoShanghai = (Button) findViewById(R.id.gochangsha);                do{        if(null == cbtGoBasehome || null == cbtGoShanghai){        break;        }        cbtGoBasehome.setOnClickListener(new Button.OnClickListener() {//实现监听器接口的匿名内部类,其中监听器本身是View类的内部接口//实现接口必须实现的onClick方法@Overridepublic void onClick(View v) {Intent cSwitchIntent = new Intent();if(null != cSwitchIntent){cSwitchIntent.setClass(Shanghaihome.this, SwitchMulActivityActivity.class);startActivity(cSwitchIntent);//Shanghaihome.this.finish();}}});                        cbtGoShanghai.setOnClickListener(new Button.OnClickListener() {//实现监听器接口的匿名内部类,其中监听器本身是View类的内部接口//实现接口必须实现的onClick方法@Overridepublic void onClick(View v) {Intent cSwitchIntent = new Intent();if(null != cSwitchIntent){cSwitchIntent.setClass(Shanghaihome.this, Changshahome.class);startActivity(cSwitchIntent);//Shanghaihome.this.finish();}}});        }while(false);}}

main.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:layout_width="fill_parent"        android:layout_height="wrap_content"        android:textColor="#ff0000"        android:background="#ffffff"        android:textSize="20dp"        android:text="@string/Basehome"        android:gravity="center"/>    <LinearLayout          android:orientation="horizontal"          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:baselineAligned="false"        android:layout_marginTop="10dp"        >             <Button        android:id="@+id/gochangsha"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/SwitchToChangshahome"         android:layout_weight="1"        android:layout_marginLeft="20dp"        android:layout_marginRight="10dp"/>    <Button        android:id="@+id/goshanghai"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/SwitchToShanghaihome"        android:layout_weight="1"         android:layout_marginLeft="10dp"        android:layout_marginRight="20dp"/></LinearLayout></LinearLayout>

changshahome.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:layout_width="fill_parent"        android:layout_height="wrap_content"        android:textColor="#00ff00"        android:background="#ffffff"        android:textSize="20dip"        android:text="@string/Changsha"        android:gravity="center"/>    <LinearLayout          android:orientation="horizontal"          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:baselineAligned="false"        android:layout_marginTop="10dp"        >             <Button        android:id="@+id/gobasehome"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/SwitchToBasehome"         android:layout_weight="1"        android:layout_marginLeft="20dp"        android:layout_marginRight="10dp"/>    <Button        android:id="@+id/goshanghai"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/SwitchToShanghaihome"        android:layout_weight="1"         android:layout_marginLeft="10dp"        android:layout_marginRight="20dp"/></LinearLayout></LinearLayout>

shanghaihome.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:layout_width="fill_parent"        android:layout_height="wrap_content"        android:textColor="#0000ff"        android:background="#ffffff"        android:textSize="20dip"        android:text="@string/Shanghai"        android:gravity="center"/>    <LinearLayout          android:orientation="horizontal"          android:layout_width="fill_parent"          android:layout_height="wrap_content"          android:baselineAligned="false"        android:layout_marginTop="10dp"        >             <Button        android:id="@+id/gobasehome"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/SwitchToBasehome"         android:layout_weight="1"        android:layout_marginLeft="20dp"        android:layout_marginRight="10dp"/>    <Button        android:id="@+id/gochangsha"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/SwitchToChangshahome"        android:layout_weight="1"         android:layout_marginLeft="10dp"        android:layout_marginRight="20dp"/></LinearLayout>    </LinearLayout>

2）效果图：






参考：Android开发循序渐进实例1--资源文件设计以及画面跳转例子
http://blog.csdn.net/jackxinxu2100/article/details/5257186
Activity的跳转与传值
http://android.blog.51cto.com/268543/323982

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