The animtion of Android simple animation

Android Simple animation effects are available in the Animtion Class 1. animate in XML; 2. Animate in Java code.

Animation-related properties

Table I: Set properties

Name	Property	Note
Android:shareinterpolator	Whether to share the insertion device	When sharing, four child nodes are used with one insert
Android:interpolator	Specifies the insertion of an animation	Using System resources
Android:fillenabled		when set to true, the Fillafter and fill Befroe will be true, ignoring the two properties of Fillbefore and Fillafter
Android:fillafter	Whether the animation conversion is applied after the animation is finished	Boolean
Android:fillbefore	Whether the animation conversion is applied before the animation starts	Boolean
Android:repeatmode	Repeating mode	"Restart" = start from scratch or "reverse" = start at the end
Android:repeatcount	Number of repetitions	Integer-1 for Infinite loops
Android:duration	Animation duration	Integer
Android:startoffset	Animation interval (dwell time before animation execution)	Long
Android:zadjustment	Defines the transformation of the animation Z order	[Normal] or [top] or [bottom]
Android:detachwallpaper	Unknown	Boolean

Here is a detailed explanation of the Android:interpolator animation Insert property (animation speed effect).

[Email protected]:anim/accelerate_decelerate_interpolator: First speed up and then slow down

[Email Protected]:anim/accelerate_interpolator: accelerating

[Email Protected]:anim/decelerate_interpolator: deceleration

[Email Protected]:anim/anticipate_interpolator: Move the animation in the opposite direction and move the trajectory along the set animation.

5.anticipate_overshoot_interpolator: Move a little in the opposite direction of the animation, then move to the end point in the set direction and move on a little bit and then bounce back to the final set position. Such as:

[Email protected]:anim/bounce_interpolator: Animation moves to the end there will be a few rebound effect, and finally stop in the set position.

[Email Protected]:anim/cycle_interpolator: Animation period movement.

[Email Protected]:anim/linear_interpolator: The animation is moving at a constant speed.

[Email Protected]:anim/overshoot_interpolator: The animation to the last position will move in the opposite direction a little.

Interpolator Object	Resource ID	Functional Role
Acceleratedecelerateinterpolator	@android: Anim/accelerate_decelerate_interpolator	Accelerate and decelerate first.
Accelerateinterpolator	@android: Anim/accelerate_interpolator	Accelerated
Anticipateinterpolator	@android: Anim/anticipate_interpolator	Take a small step back and speed it up.
Anticipateovershootinterpolator	@android: Anim/anticipate_overshoot_interpolator	A small step beyond the finish line on the last, and then back to the end.
Bounceinterpolator	@android: Anim/bounce_interpolator	Final stage Pinball effect
Cycleinterpolator	@android: Anim/cycle_interpolator	Periodic motion
Decelerateinterpolator	@android: Anim/decelerate_interpolator	Slowdown
Linearinterpolator	@android: Anim/linear_interpolator	Uniform
Overshootinterpolator	@android: Anim/overshoot_interpolator	Get to the finish line quickly and go beyond one step to the end

about modifying the properties of an animation insert: Click the link to open it

Table II: Alpha

Name	Property	Note
Android:toalpha	Transparency at the end of the animation	float [0,1] 0 means fully transparent 1 means completely opaque
Android:duration	Animation duration	Integer
Android:fromalpha	Transparency at the beginning of the animation	float [0,1] 0 means fully transparent 1 means completely opaque

Table III: Scale

Name	Property	Note
Android:fromxscale	The scaling dimensions on the x-coordinate when the animation starts	float,0.0 means no, 1.0 indicates normal no stretch, less than 1 means contraction, greater than 1
Android:toxscale	Stretch size on x-coordinate at end of animation	Ditto
Android:fromyscale	The scaling dimension on the y-coordinate when the animation starts	Ditto
Android:toyscale	Stretch dimensions on the y-coordinate at the end of the animation	Ditto
Android:pivotx	The start position of the animation relative to the X of the object	[0%,100%],50% indicates the middle
Android:pivoty	The start position of the animation relative to the Y of the object	0%,100%],50% represents the middle
Android:duration	Same set	Same set

Table IV: TRANSLATE

Name	Property	Note
Android:fromxdelta	The position of the x-coordinate at the start of the animation	Integer defaults to self-referential
Android:toxdelta	The position of the x-coordinate at the end of the animation	Integer defaults to self-referential
Android:fromydelta	Position on the y-coordinate when the animation starts	Integer defaults to self-referential
Android:toydelta	Position at the end of the animation at the y-coordinate	Integer defaults to self-referential

Table V: ROTATE

Name	Property	Note
Android:fromdegrees	When the animation starts, the angle of the object	Negative: counterclockwise rotation, positive: clockwise rotation
Android:todegrees	The angle of the object at the end of the animation (can be greater than 360 degrees)	Ditto
Android:pivotx	The start position of the animation relative to the X of the object	[0%,100%],50% indicates the middle
Android:pivoty	The start position of the animation relative to the Y of the object	[0%,100%],50% indicates the middle

One.. XML Implementation Alpha:

<?xml version= "1.0" encoding= "Utf-8"? ><set xmlns:android= "Http://schemas.android.com/apk/res/android"    >    <alpha        android:duration= "android:fromalpha="        0 "        android:repeatcount=" 3 "// The number of times the animation repeats        android:repeatmode= "reverse"//Animation repeat mode  reverse: Reverse, that is, play the animation from the last frame;  restart: order, play the animation        from the beginning Android:toalpha= "1.0"/></set>

A few noteworthy places: if you need to let the animation set android:fillafter= "true"
Android:fillbefore= the property of "false" must be attribute this is only valid under <set>. For example, the valid setting is this

<?xml version= "1.0" encoding= "Utf-8"? ><set xmlns:android= "Http://schemas.android.com/apk/res/android"    android:fillafter= "true"   >    <alpha        android:duration= "$"        android:fromalpha= "0"                android:repeatcount= "3"        android:repeatmode= "reverse"        android:toalpha= "1.0"/></set>

Then the animation above will stay on the last frame.

Two. Code implementation alpha

Animation anim = new Alphaanimation (0f, 1.0f); anim.setduration (+); Anim.setrepeatcount (Animation.infinite); Anim.setrepeatmode (Animation.restart);

Three. XML Implementation scale

<?xml version= "1.0" encoding= "Utf-8"? ><set xmlns:android= "Http://schemas.android.com/apk/res/android"    android:fillafter= "true"    android:interpolator= "@android: Anim/decelerate_interpolator" > <!-- The screen stays at the last frame-    >    <scale        android:duration= "        $" android:fromxscale= "0.5"        android: fromyscale= "0.5"        android:pivotx= "50.0%" > <!--the position at which the animation starts relative to the space X coordinate 50. 0% means to scale the animation from the center of the space--        android:pivoty= "50.0%"        android:repeatcount= "3"        android:repeatmode= " Reverse "        android:toxscale=" 1.0 "        android:toyscale=" 1.0 "         />    </scale></set>

four. Code implementation Scale

Animation anim1 = new Scaleanimation (0.5f, 1.0f, 0.5f, 1.0f, 0.5f, 0.5f); anim1.setduration (in); Anim1.setrepeatcount (3 ); Anim1.setrepeatmode (Animation.reverse); Anim1.setinterpolator (this, interpolator.accelerate_decelerate); Anim1.setfillafter (TRUE);

Five. XML Implementation stranslate

<?xml version= "1.0" encoding= "Utf-8"? ><set xmlns:android= "Http://schemas.android.com/apk/res/android"    android:interpolator= "@android: Anim/decelerate_interpolator"    android:fillafter= "true" >    < Translate        android:duration= "android:fromxdelta="        0 "        android:fromydelta=" 0 "        android: Toxdelta= "0"        android:toydelta= "/></set>"

Six code implementation stranslate

Animation animtranlate = new Translateanimation (0, 0, 0, N); animtranlate.setduration (2000); Animtranlate.setfillafter (True); Animtranlate.setinterpolator (this, interpolator.bounce); Text.startanimation ( Animtranlate);

Seven. XML implementation rotate

<?xml version= "1.0" encoding= "Utf-8"? ><set xmlns:android= "Http://schemas.android.com/apk/res/android"    android:fillafter= "true"    android:interpolator= "@android: Anim/accelerate_decelerate_interpolator" >    <rotate        android:duration= "android:fromdegrees="        0 "        android:pivotx=" 50% "        android: Pivoty= "50%"        android:todegrees= "180"//negative is counterclockwise, positive clockwise.

/></set>

Eight. Code implementation rotate

Animation animrotate = new Rotateanimation (0f, 360f,animation.relative_to_self, 0.5f, animation.relative_to_self,0.5f ); Animrotate.setduration (Animrotate.setinterpolator); (this, interpolator.bounce); Animrotate.setfillafter ( true); <span style= "White-space:pre" >animrotate.setstartoffset (); </span>// Duration of text.startanimation (animrotate) before animation execution;

Nine. The implementation of the combined animation

<?xml version= "1.0" encoding= "Utf-8"? ><set xmlns:android= "Http://schemas.android.com/apk/res/android"    android:duration= "android:fillafter="    true "    android:interpolator=" @android: Anim/accelerate_ Decelerate_interpolator ">    <alpha        android:fromalpha=" 0 "        android:toalpha=" 1.0 "/>    < Scale        android:fromxscale= "0"        android:fromyscale= "0"        android:pivotx= "50%"        android:pivoty= "50%"        android:toxscale= "1.0"        android:toyscale= "1.0"/></set>

10. The code implements the combination animation

Animation anim1 = new Scaleanimation (0.5f, 1.0f, 0.5f, 1.0f, 0.5f, 0.5f); anim1.setduration (in); Anim1.setrepeatcount (3 ); Anim1.setrepeatmode (Animation.reverse); Anim1.setinterpolator (this, interpolator.accelerate_decelerate); Anim1.setfillafter (TRUE);//Text.setanimation (ANIM1); Animation animtranlate = new Translateanimation (0, 0, 0, N); animtranlate.setduration (2000); Animtranlate.setfillafter (True); Animtranlate.setinterpolator (this, interpolator.bounce);//Text.startanimation ( Animtranlate); Animation animrotate = new Rotateanimation (0f, 360f,animation.relative_to_self, 0.5f, animation.relative_to_self,0.5f ); Animrotate.setduration (Animrotate.setinterpolator); (this, interpolator.bounce); Animrotate.setfillafter ( true);//Text.startanimation (animrotate); Animationset animationset = new Animationset (true); Animationset.addanimation (animrotate); animationset.addanimation (animtranlate); animationset.addanimation (ANIM1); text.startanimation (Animationset);

End!

The animtion of Android simple animation