android页面切换

修改strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="layout1">this is Layout 1</string>
<string name="layout2">This is Layout 2</string>
<string name="app_name">Ex8_UI</string>
</resources>

新建color.xml 保存两个颜色值 (放到res/values目录中)

<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="black">#000000</color>
<color name="white">#FFFFFFFF</color>
</resources>

修改main.xml 布局，添加一个TextView 和一个Button

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/black"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:id="@+id/text1"
android:textSize="24sp"
android:layout_width="186px"
android:layout_height="29px"
android:layout_x="70px"
android:layout_y="32px"
android:text="@string/layout1"
></TextView>
<Button
android:id="@+id/button1"
android:layout_width="118px"
android:layout_height="wrap_content"
android:layout_x="100px"
android:layout_y="82px"
android:text="Go to Layout2"
></Button>
</AbsoluteLayout>

新建mylayout.xml 布局文件(放到res/layout目录中)，并添加两个View：TextView 和Button

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@color/white"
xmlns:android="http://schemas.android.com/apk/res/android">
<TextView
android:id="@+id/text2"
android:textSize="24sp"
android:layout_width="186px"
android:layout_height="29px"
android:layout_x="70px"
android:layout_y="32px"
android:textColor="@color/black"
android:text="@string/layout2"
> </TextView>
<Button
android:id="@+id/button2"
android:layout_width="118px"
android:layout_height="wrap_content"
android:layout_x="100px"
android:layout_y="82px"
android:text="Go to Layout1"
></Button>
</AbsoluteLayout>

编写mainActivity.java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package org.me.setcontentviewapp;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

/**
*
* @author LiaoKeCheng<http://hi.baidu.com/wishwingliao>
*/
public class MainActivity extends Activity
{

    /** Called when the activity is first created. */
    @Override
    public void onCreate( Bundle icicle )
    {
        super.onCreate( icicle );
        /* 载入main.xml Layout */
        setContentView( R.layout.main );// 默认启动布局
        /* 以findViewById()取得Button 对象，并添加onClickListener */
        Button b1 = ( Button ) findViewById( R.id.button1 );
        b1.setOnClickListener( new Button.OnClickListener()
        {

            public void onClick( View v )
            {
                jumpToLayout2();// 调用跳转方法jumpToLayout2()
            }
        } );
    }

    /**
     * method jumpToLayout2：将layout由 main.xml 切 换成mylayout.xml
     */
    public void jumpToLayout2()
    {
        /* 将layout 改成mylayout.xml */
        setContentView( R.layout.mylayout );
        /* 以findViewById()取得Button 对象，并添加onClickListener */
        Button b2 = ( Button ) findViewById( R.id.button2 );
        b2.setOnClickListener( new Button.OnClickListener()
        {

            public void onClick( View v )
            {
                jumpToLayout1();// 调用跳转方法jumpToLayout1()
            }
        } );
    }

    /**
     * method jumpToLayout1：将layout 由mylayout.xml 切换成main.xml
     */
    public void jumpToLayout1()
    {
        /* 将layout 改成main.xml */
        setContentView( R.layout.main );
        /* 以findViewById()取得Button 对象，并添加onClickListener */
        Button b1 = ( Button ) findViewById( R.id.button1 );
        b1.setOnClickListener( new Button.OnClickListener()
        {

            public void onClick( View v )
            {
                jumpToLayout2();// 调用跳转方法jumpToLayout2()
            }
        } );
    }
}