Android Learning Essay 28 (application summary)

• How to remove the title bar

The first type : A method commonly used when getting started
Requestwindowfeature (window.feature_no_title);//Remove the title bar
Note This sentence must be written in front of the Setcontentview () method, or it will be an error

The second type : defined in the Androidmanifest.xml file
<application android:icon= "@drawable/icon"
Android:label= "@string/app_name"
Android:theme= "@android: Style/theme.notitlebar" >
As can be seen, the entire application will be removed from the title bar, if you want to remove the title bar of an activity, you can add this attribute to the activity tag

Note: This method does not work in the android4.1.1 Samsung i9300 phone tabhost, need to use the first method plus settheme together control.
SetTheme (Android. R.style.theme_black_notitlebar);
Requestwindowfeature (Window.feature_no_title);
Setcontentview (R.layout.api_tab_host);

The third type : custom styles, not commonly used in general applications, create a new Style.xml file under the Res/values directory
For example:
<?xml version= "1.0" encoding= "UTF-8"?>
<resources>
<style name= "Notitle" >
<item name= "Android:windownotitle" >true</item>
</style>
</resources>
Equivalent to a topic and then defined in the Androidmanifest.xml file

<application android:icon= "@drawable/icon"
Android:label= "@string/app_name"
Android:theme= "@style/notitle" >
Achieve the effect of removing the title bar

The first is that we will see the title bar first and then disappear, because it is defined in the activity's OnCreate method.
The second is better than the first, and it will not happen this way.
The third kind of function can be separated, easy to maintain and expand, but more troublesome.

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• Full-screen method

First Kind
GetWindow (). SetFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

The second Kind
Android:theme= "@android: Style/theme.notitlebar.fullscreen"

Third Kind
Application android:icon= "@drawable/icon"
Android:label= "@string/app_name"
Android:theme= "@style/fullscreem"

Android Learning Essay 28 (application summary)