Advanced use of Android-based animations

Layoutanimationcontroller:

A. It is used to set animation effects for controls in a layout or a viewgroup.

B. Each widget has the same animation effect.

C. The animation effects of these controls are displayed at no time.

 

Steps for using layoutanimationcontroller in XML:

1. Create a new file named list_anim_layout.xml In the Res/anim Folder:

<Layoutanimation

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

Android: delay= "0.5"

Android: animationorder = "random"

Android: animation = "@ anim/list_anim"/>

2. In the layout file, add the following configuration for the listview with an animation ,:

Android: layoutanimation = "@ anim/list_anim_layout"

 

InCodeUse layoutanimationcontroller

1. Create an animation object: you can load an XML file (animationutils. loadanimation) or directly use the animation constructor to create an animation object.

2. Use the following code to create a layoutanimationcontroller object: layoutanimationcontroller LAC = new layoutanimationcontroller (animation );

3. Set the display sequence of controls: Lac. setorder (layoutanimationcontroller. order_normal );

4. Set the layoutanimationcontroller attribute for listview: listview. setlayoutanimation (LAC );