<?xml version="1.0" encoding="utf-8"?>


  
  

public class CustomTitleBar {

  private Activity mActivity;
  //不要使用 static 因为有三级页面返回时会报错

  /**
   * @param activity
   * @param title
   * @see [自定义标题栏]
   */
  public void getTitleBar(Activity activity, String title) {
    mActivity = activity;
   activity.requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
   //指定自定义标题栏的布局文件
    activity.setContentView(R.layout.mytitlebar);
    activity.getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,
        R.layout.mytitlebar);
//获取自定义标题栏的TextView控件并设置内容为传递过来的字符串
    TextView textView = (TextView) activity.findViewById(R.id.mytitle);
    textView.setText(title);
    //设置返回按钮的点击事件
    ImageButton titleBackBtn = (ImageButton) activity.findViewById(R.id.bt_back);
    titleBackBtn.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
      //调用系统的返回按键的点击事件
        mActivity.onBackPressed();
      }
    });
  }
}

public class food extends Activity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //实例化CustomTitleBar 传递相应的参数
    CustomTitleBar ct = new CustomTitleBar();
    ct.getTitleBar(this, "美食");
    setContentView(R.layout.page_food);
  }
}

//省略了其余部分，android:theme="@style/mytitlestyle"这句必需写