自定义主题

(1)创建主题样式

<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="itcastTheme" parent="android:Theme">
<item name="android:windowContentOverlay">@drawable/nonecolor</item>
<item name="android:windowTitleSize">44dp</item>
<item name="android:windowTitleBackgroundStyle">@style/itcastbg</item>
</style>
<style name="itcastbg">
<item name="android:background">@drawable/rectangle</item>
</style>
</resources>

(2)主题背景矩形

<?xml version="1.0" encoding="utf-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:angle="270"
android:endColor="#1DC9CD"
android:startColor="#A2E0FB"/>
<padding
android:left="2dp"
android:top="2dp"
android:right="2dp"
android:bottom="2dp" />
</shape>

（3）标题布局

<?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="match_parent"
android:orientation="horizontal"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:textColor="#FF0000"
android:text="这是我的自定义标题"
/>

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="添加"
android:onClick="add"
/>
</LinearLayout>
主方法中

public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title);
}

public void add(View v){
Toast.makeText(this, "按钮被点击", 1).show();
}