android创建设立页面

package com.zxl.activity;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        Button btnprefs=(Button)findViewById(R.id.button1);
        btnprefs.setOnClickListener(new View.OnClickListener() {
			
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Intent intent=new Intent(MainActivity.this,PrefsActivity.class);
				startActivity(intent);	
			}
		});
        
        Button btnReady= (Button)findViewById(R.id.button2);
        btnReady.setOnClickListener(new View.OnClickListener() {
			
			public void onClick(View v) {
				// TODO Auto-generated method stub
				SharedPreferences shared=PreferenceManager.getDefaultSharedPreferences(MainActivity.this);
				boolean ready=shared.getBoolean("ready", false);
				Toast.makeText(MainActivity.this,String.valueOf(ready),Toast.LENGTH_LONG ).show();
			}
		});
        
    }
}

package com.zxl.activity;

import android.os.Bundle;
import android.preference.PreferenceActivity;

public class PrefsActivity extends PreferenceActivity {

	//右键source->Override/Implement Methods。。。
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		
		addPreferencesFromResource(R.xml.prefs);
		
	}	
	
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />


    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/textView1"
        android:layout_marginLeft="62dp"
        android:layout_marginTop="95dp"
        android:text="Prefs" />


    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/button1"
        android:layout_marginLeft="44dp"
        android:layout_toRightOf="@+id/button1"
        android:text="Ready?" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
    
    <CheckBoxPreference android:key="ready" android:title="Are you ready?" android:summary="Check this box if you ready! " />
    
</PreferenceScreen>