实现手机页面转换

新建两个布局文件 main.xml,main2.xml

res/layout/main.xml

<?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"
    android:id="@+id/tvText"/>
<Button 
	android:layout_height="wrap_content" 
	android:layout_width="wrap_content" 
	android:text="Button" 
	android:id="@+id/mBtn">
	</Button>
</LinearLayout>

res/layout/main2.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">
    <TextView 
    		android:layout_width="wrap_content" 
    		android:id="@+id/textView2" 
    		android:layout_height="wrap_content" 
    		android:text="@string/Activity2">
    		</TextView>
    		<Button android:layout_width="wrap_content" 
		android:layout_height="wrap_content" 
		android:id="@+id/mBtn2" 
		android:text="Button"></Button>
</LinearLayout>

src/EX03_08.java

package gphone.ex03_08;

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

public class EX03_08 extends Activity {
	Button mBtn1=null;
	Button mBtn2=null;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mBtn1=(Button)this.findViewById(R.id.mBtn1);
        mBtn1.setOnClickListener(new Button.OnClickListener(){

			public void onClick(View v) {
				// TODO Auto-generated method stub
				//changeLayout2to1();
				changeLayout2to1();
				
			}
        	
        });
        
    }
    public void changeLayout1to2()
    {
    	setContentView(R.layout.main);
    	mBtn1=(Button)findViewById(R.id.mBtn1);
        mBtn1.setOnClickListener(new Button.OnClickListener(){

			public void onClick(View v) {
				// TODO Auto-generated method stub
				changeLayout2to1();
				
			}
        	
        });
    }
    public void changeLayout2to1()
    {
    	setContentView(R.layout.main2);
    	mBtn2=(Button)findViewById(R.id.mBtn2);
        mBtn2.setOnClickListener(new Button.OnClickListener(){

			public void onClick(View v) {
				// TODO Auto-generated method stub
				changeLayout1to2();
			}
        	
        });
    }
}

运行结果