Android Animation Resources Detailed

Property animations:

• Causes an object's property value to change to a value within a certain time interval.
• Http://developer.android.com/guide/topics/resources/animation-resource.html#Property

Resources Catalog: Rec\animator

    <set xmlns:android="http://schemas.android.com/apk/res/android"        android:ordering="sequentially" >   // together|sequentially        <objectAnimator            android:duration="2000"            android:propertyName="y"            android:valueTo="300"            android:valueType="intType" />        <objectAnimator            android:duration="3000"            android:propertyName="x"            android:valueTo="220"            android:valueType="intType" />    

To create an attribute class for an app

    class Move    {        private int y;        private int x;        public int getY()        {              return y;        }        public void setY(int y)        {            this.y = y;            button.layout(button.getLeft(), y, button.getRight(),                    y + button.getMeasuredHeight());        }        public int getX()        {            return x;        }        public void setX(int x)        {            this.x = x;            button.layout(x, button.getTop(), x + button.getMeasuredWidth(),                    button.getBottom());        }    }

Load resources and perform animations

    // 装载属性动画资源    AnimatorSet set = (AnimatorSet) AnimatorInflater.loadAnimator(this,            R.animator.property_anim);    // 设置要控制的对象    set.setTarget(move);    // 开始动画    set.start();

Frame animations:

• Animations occur when a static image is continuously played at high frequencies
• Http://developer.android.com/guide/topics/resources/animation-resource.html#Frame

Resources Catalog: res/drawable/

• Frame animation must use <animation-list> tag as root node
• Android:oneshot= "false" for Infinite loop playback, android:oneshot= "true": Play Once
• The first one represents a static image
• android:duration= "100": Specifies the time at which the current image stays

Example one:

<animation-list xmlns:android="http://schemas.android.com/apk/res/android"    android:oneshot="false">    <item android:drawable="@drawable/myanim1" android:duration="20" />    <item android:drawable="@drawable/myanim2" android:duration="20" />    <item android:drawable="@drawable/myanim3" android:duration="20" />    <item android:drawable="@drawable/myanim4" android:duration="20" />    <item android:drawable="@drawable/myanim5" android:duration="20" />    <item android:drawable="@drawable/myanim6" android:duration="20" /></animation-list>

Motion Tweens:

• Animated effect when a static image is played continuously at high frequency (Res/anim)
• Http://developer.android.com/guide/topics/resources/animation-resource.html#Tween

Resources Catalog: res/anim/

<?xml version= "1.0" encoding= "Utf-8"? ><set xmlns:android= "Http://schemas.android.com/apk/res/android"     android:interpolator= "@[package:]anim/interpolator_resource"     android:shareinterpolator= ["True" | "False" >    <alpha        android:fromalpha= "float"         Android Oid:toalpha= "float"/>    <scale        android:fromxscale= "float"     & nbsp   android:toxscale= "float"         android:fromyscale= "float"         android:toyscale= "float"         android:pivotx= "float"         android:pivoty= " Float "/>    <translate        android:fromxdelta=" float "        Android:toxdelta= "float"         android:fromydelta= "float"         Android: Toydelta= "float"/>    <rotate  &NBSp     android:fromdegrees= "float"         android:todegrees= "float"         android:pivotx= "float"         android:pivoty= "float"/>    <set>  & nbsp     ...    </set></set>

Animation renderer

Definition: Used to modify the animation effect, define the rate of change of animation, can make the existing animation effect accelerated (acceleration), decelerated (deceleration), repeated (repetition), bounced (bounce) and so on.

• Acceleratedecelerateinterpolator at the beginning of the animation with the introduction of the local rate change slower, in the middle of the time to accelerate
• Accelerateinterpolator at the beginning of the animation the rate change is slow, and then start to accelerate
• Anticipateinterpolator starts back and then moves forward.
• Anticipateovershootinterpolator starts back and then dumps a certain value and returns the last value.
• Bounceinterpolator animation at the end of the play
• Cycleinterpolator Animation Loop plays a specific number of times, rate changes along the sine curve
• Decelerateinterpolator in the beginning of the animation and then slowly
• Linearinterpolator change at constant rate
• Overshootinterpolator forward a certain value before returning to its original position.