Customize the style of Some Android controls (Button example)

In Android, you can set styles in different states of a button control.

First, define mbutton. XML in RES/drawable:

<? XML version = "1.0" encoding = "UTF-8"?>

<Selector

Xmlns: Android = "http://schemas.android.com/apk/res/android">

<Item

Android: state_focused = "true"

Android: state_pressed = "false"

Android: drawable = "@ drawable/btnfocused"/>

<Item

Android: state_focused = "true"

Android: state_pressed = "true"

Android: drawable = "@ drawable/btnfocusedpressed"/>

<Item

Android: state_focused = "false"

Android: state_pressed = "true"

Android: drawable = "@ drawable/btnpressed"/>

<Item Android: drawable = "@ drawable/btndefault"/>

</Selector>

Then use the following in the layout file:

<Button

...

Android: Background = "@ drawable/mbutton"

...

Note: btnfocused, btnfocusedpressed, btnpressed, and btndefault are background images in different states of the button and placed in drawable or several other drawable folders.

Effect (several images randomly selected): (several images are not uploaded)

Default:

Focused:

Pressed:

Focused & pressed:

There is another problem here: focused disappears after the expression, so the focusedpressed style is not obtained.