ActionBar 通用方法

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="50dp" >

    <ImageView
        android:id="@+id/home"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:layout_marginLeft="10dp"
        android:clickable="true"
        android:scaleType="fitXY"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:src="@drawable/wd007" />

    <TextView
        android:id="@+id/titlebar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:gravity="center"
        android:text="消 息"
        android:textColor="@color/titlecolor"
        android:textSize="20sp" />

    <ImageView
       android:id="@+id/right"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:layout_marginRight="10dp"
        android:clickable="true"
        android:scaleType="fitXY"
        android:layout_alignParentRight="true"
          android:layout_centerVertical="true"
        android:visibility="invisible"
        android:src="@drawable/wd007" />

</RelativeLayout>

package com.tuyoung.wu;

import com.example.toyoung.R;

import android.app.ActionBar;
import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.ImageView;

public class Message extends Activity{
    private ImageView back;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_message);
        setCustomActionBar();
    }
    
    private void setCustomActionBar() {  
        ActionBar.LayoutParams lp =new ActionBar.LayoutParams(ActionBar.LayoutParams.MATCH_PARENT, ActionBar.LayoutParams.MATCH_PARENT, Gravity.CENTER);  
        View mActionBarView = LayoutInflater.from(this).inflate(R.layout.customtitle, null);  
        ActionBar actionBar = getActionBar();  
        actionBar.setCustomView(mActionBarView, lp);  
        actionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);  
        actionBar.setDisplayShowCustomEnabled(true);  
        actionBar.setDisplayShowHomeEnabled(false);  
        actionBar.setDisplayShowTitleEnabled(false);
        
        back = (ImageView) mActionBarView.findViewById(R.id.home);
        back.setOnClickListener(new OnClickListener() {            
            @Override
            public void onClick(View v) {                
                finish();
            }
        });
        
    }  

}