Familiar with the process of Animation in Android 1-General Introduction

Summary of the recent use of animations based on online materials and your own understanding

There are four types of animations in Android: gradient transparency Animation effect, gradient scaling Animation effect, screen conversion position movement Animation effect, and screen transfer rotation Animation effect.

How to define an animation in an XML file
① Open Eclipse and create an Android Project
② Create an anim folder in the res directory
③ Create a new myanim. xml file in the anim directory (note that the file name is in lower case)
④ Add XML animation code
<? Xml version = "1.0" encoding = "UTF-8"?>
<Set xmlns: android = "http://schemas.android.com/apk/res/android">
<Alpha/> <! -- Gradient transparency animation effect -->
<Scale/> <! -- Gradient scaling animation effect -->
<Translate/> <! -- Animation effect for moving the image conversion position -->
<Rotate/> <! -- Animation effects of screen transfer and rotation -->
</Set>

In Java code

AlphaAnimation gradient transparency animation effect
ScaleAnimation gradient scaling animation effect
TranslateAnimation
RotateAnimation image transfer rotation animation effect

The two most common methods are as follows:

Tween Animation (gradient Animation): animated effects are generated by constantly performing image transformations (translation, scaling, and rotation) on objects in the scenario.

Frame Animation (Frame Animation): Play the prepared images in sequence, similar to playing a movie.

Going on ......

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