本文将通过一个实例讲解怎么实现在4.0及以上系统版本中实现自定义TitleBar,这只是我自己找到的一种方法;

xml布局文件

activity_main.xml

1. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
2. xmlns:tools="http://schemas.android.com/tools"
3. android:layout_width="match_parent"
4. android:layout_height="match_parent"
5. android:paddingBottom="@dimen/activity_vertical_margin"
6. android:paddingLeft="@dimen/activity_horizontal_margin"
7. android:paddingRight="@dimen/activity_horizontal_margin"
8. android:paddingTop="@dimen/activity_vertical_margin"
9. tools:context=".MainActivity" >
10. <TextView
11. android:layout_width="wrap_content"
12. android:layout_height="wrap_content"
13. android:text="@string/hello_world" />
14. </RelativeLayout>

自定义的Titlebar的布局文件titlebar.xml

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:layout_width="match_parent"
4. android:layout_height="48dp"
5. android:orientation="horizontal" >
6. <ImageView
7. android:layout_width="wrap_content"
8. android:layout_height="wrap_content"
9. android:layout_gravity="center"
10. android:layout_weight="1.5"
11. android:src=http://www.mamicode.com/"@drawable/ic_action_search" />
12. <TextView
13. android:layout_width="wrap_content"
14. android:layout_height="48dp"
15. android:layout_weight="1.5"
16. android:paddingTop="1dp"
17. android:text="@string/app_name"
18. android:textSize="14sp" />
19. <EditText
20. android:id="@+id/searchparameter"
21. android:layout_width="wrap_content"
22. android:layout_height="48dp"
23. android:layout_margin="1dp"
24. android:layout_weight="5"
25. android:text="ABCDEFGHIJ"
26. android:textSize="14sp" />
27. <Button
28. android:id="@+id/button"
29. android:layout_width="wrap_content"
30. android:layout_height="48dp"
31. android:layout_margin="1dp"
32. android:layout_weight="2"
33. android:text="OK"
34. android:textSize="14sp" />
35. </LinearLayout>

为布局文件修改style.xml

此处的style.xml在values-11或者value-14中,否侧会报错:you cannot combine custom titles with other title features

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

在AndroidManifest.xml添加主题样式

android:theme="@style/titlebarstyle"

1. <?xml version="1.0" encoding="utf-8"?>
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
3. package="com.example.titlebardemo"
4. android:versionCode="1"
5. android:versionName="1.0" >
6. <uses-sdk
7. android:minSdkVersion="8"
8. android:targetSdkVersion="17" />
9. <application
10. android:allowBackup="true"
11. android:icon="@drawable/ic_launcher"
12. android:label="@string/app_name" >
13. <activity
14. android:name="com.example.titlebardemo.MainActivity"
15. android:label="@string/app_name"
16. android:theme="@style/titlebarstyle" >
17. <intent-filter>
18. <action android:name="android.intent.action.MAIN" />
19. <category android:name="android.intent.category.LAUNCHER" />
20. </intent-filter>
21. </activity>
22. </application>
23. </manifest>

MainActivity.java中添加实现代码

1. protected void onCreate(Bundle savedInstanceState) {
2. super.onCreate(savedInstanceState);
3. requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
4. setContentView(R.layout.activity_main);
5. getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,
6. R.layout.titlebar);
7. }

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

希望读者朋友们通过这个例子能够对怎么实现在4.0及以上系统版本中自定义TitleBar有深刻理解和掌握。