本文將通過一個實例講解怎么實現在4.0及以上系統版本中實現自定義TitleBar,這只是我自己找到的一種方法;

xml布局文件

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context=".MainActivity" > 
 
    <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:text="@string/hello_world" /> 
</RelativeLayout> 

自定義的Titlebar的布局文件titlebar.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="48dp" 
    android:orientation="horizontal" > 
    <ImageView 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:layout_gravity="center" 
        android:layout_weight="1.5" 
        android:src="@drawable/ic_action_search" /> 
    <TextView 
        android:layout_width="wrap_content" 
        android:layout_height="48dp" 
        android:layout_weight="1.5" 
        android:paddingTop="1dp" 
        android:text="@string/app_name" 
        android:textSize="14sp" /> 
    <EditText 
        android:id="@+id/searchparameter" 
        android:layout_width="wrap_content" 
        android:layout_height="48dp" 
        android:layout_margin="1dp" 
        android:layout_weight="5" 
        android:text="ABCDEFGHIJ" 
        android:textSize="14sp" /> 
    <Button 
        android:id="@+id/button" 
        android:layout_width="wrap_content" 
        android:layout_height="48dp" 
        android:layout_margin="1dp" 
        android:layout_weight="2" 
        android:text="OK" 
        android:textSize="14sp" /> 
</LinearLayout> 

為布局文件修改style.xml

此處的style.xml在values-11或者value-14中,否側會報錯:you cannot combine custom titles with other title features

<?xml version="1.0" encoding="utf-8"?> 
<resources xmlns:android="http://schemas.android.com/apk/res/android"> 
    <style name="CustomizedWindowTitleBackground"> 
        <item name="android:background">#047BF0</item> 
    </style> 
    <style name="titlebarstyle" parent="android:Theme"> 
        <item name="android:windowTitleSize">48dp</item> 
        <item name="android:windowTitleBackgroundStyle">@style/CustomizedWindowTitleBackground</item> 
        <!-- All customizations that are NOT specific to a particular API-level can go here. --> 
    </style> 
</resources> 

在AndroidManifest.xml添加主題樣式

android:theme="@style/titlebarstyle"

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.titlebardemo" 
    android:versionCode="1" 
    android:versionName="1.0" > 
    <uses-sdk 
        android:minSdkVersion="8" 
        android:targetSdkVersion="17" /> 
    <application 
        android:allowBackup="true" 
        android:icon="@drawable/ic_launcher" 
        android:label="@string/app_name" > 
        <activity 
            android:name="com.example.titlebardemo.MainActivity" 
            android:label="@string/app_name" 
           android:theme="@style/titlebarstyle" > 
            <intent-filter> 
                <action android:name="android.intent.action.MAIN" /> 
                <category android:name="android.intent.category.LAUNCHER" /> 
            </intent-filter> 
        </activity> 
    </application> 
</manifest> 

MainActivity.java中添加實現代碼

protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); 
        setContentView(R.layout.activity_main); 
        getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, 
                R.layout.titlebar); 
    } 

代碼中requestWindowFeature(Window.FEATURECUSTOMTITLE);和getWindow().setFeatureInt(Window.FEATURECUSTOMTITLE,
R.layout.titlebar);位置是固定的.

希望讀者朋友們通過這個例子能夠對怎么實現在4.0及以上系統版本中自定義TitleBar有深刻理解和掌握。