Android两个layout切换。

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

strings.xml
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<?xml version="1.0" encoding="utf-8"?><resources>    <string name="hello">Hello World, Android_TowLayoutActivity!</string>    <string name="app_name">Android_TowLayout</string>    <string name="layout1">this is Layout 1</string>    <string name="layout2">This is Layout 2</string></resources>

两个layout XML
strings.xml
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<?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:background="@color/black"    android:orientation="vertical" >    <TextView        android:id="@+id/text1"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/layout1"        android:textSize="24sp" />    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Button" /></LinearLayout>

mylayout.xml
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<?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:background="@color/black"    android:orientation="vertical" >    <TextView        android:id="@+id/text2"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/layout2"        android:textSize="24sp" />    <Button        android:id="@+id/button2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Button2" /></LinearLayout>

TowLayoutActivity.java
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package com.pandy.tl;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;public class TowLayoutActivity extends Activity {    /** Called when the activity is first created. */private Button button1;private Button button2;private TextView text1;private TextView text2;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                button1 = (Button)findViewById(R.id.button1);        button1.setOnClickListener(new OnClickListener(){        @Override        public void onClick(View v) {        // TODO Auto-generated method stub        jumpLayout2();                }        });        //这里不能定义button2的的时间,否则会出错。但不知道什么原因，难道button2是R.layout.main的控件，才会出现这个情况？/*        button2 = (Button)findViewById(R.id.button2);        button2.setOnClickListener(new OnClickListener(){        @Override        public void onClick(View v) {        // TODO Auto-generated method stub        jumpLayout1();        }        });*/            }    public void jumpLayout1() {setContentView(R.layout.main);button1 = (Button) findViewById(R.id.button1);button1.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {jumpLayout2();}});}public void jumpLayout2() {setContentView(R.layout.mylayout);button2 = (Button) findViewById(R.id.button2);button2.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {jumpLayout1();}});}}

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