Android changes the layout of the window title bar

 

I. Key Points
Generally, the title of an application is created in androidmanifest. if you want to add buttons, images, and other complex la S, you can use the following methods:
When creating a window, you can set an XML layout to the title of the application.

 

Ii. Instances

A) function: Set the title to a combination of a string and a button.

B) modify the xxactivity. Java code
Public void oncreate (bundle savedinstancestate ){
Super. oncreate (savedinstancestate );
Requestwindowfeature (window. feature_custom_title); // pay attention to the sequence
Setcontentview (R. layout. Main); // pay attention to the sequence
Getwindow (). setfeatureint (window. feature_custom_title, // pay attention to the sequence
R. layout. Title );
}

C) add the title. XML code.
<? XML version = "1.0" encoding = "UTF-8"?>
<Linearlayout
Xmlns: Android = http://schemas.android.com/apk/res/android
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content">
<Textview Android: Id = "@ + ID/text"
Android: layout_width = "wrap_content"
Android: layout_height = "wrap_content"
Android: layout_alignparentleft = "true"
Android: text = "text"/>
<Button Android: Id = "@ + ID/button"
Android: layout_width = "wrap_content"
Android: layout_height = "30px"
Android: text = "button"/>
</Linearlayout>

3. Note

A) Pay attention to setting the sequence.
Requestwindowfeature must be before setcontentview
Getwindow (). setfeatureinit is better after setcontentview

B) Note that the requestwindowfeature (window. feature_custom_title) should not be used together with other settings for the title requestwindowfeature (XXXX ).