如何定制Activity的标题栏

requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);

setContentView(R.layout.main);

//自定义标题栏
        mWindow = getWindow();
        mWindow.setFeatureInt(Window.FEATURE_CUSTOM_TITLE,R.layout.titlebar);

titlebar.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
>
        <TextView
                android:text="@string/app_name"
                android:textColor="#000"
                android:paddingRight="3.0dip"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
        <TextView
                android:text="@string/battery_text"
                android:textColor="#000"
                android:paddingRight="3.0dip"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
        <TextView
                android:id="@+id/battery_text"
                android:textColor="#00f"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
</LinearLayout>