Go to] Android animation application instance

The file name is myanimation. XML, which is located in the Res/anim folder:

 
 

  
  
<? XML version = "1.0" encoding = "UTF-8"?>
  
  
<Set xmlns: Android = "http://schemas.android.com/apk/res/android">
  
  

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

  
  
ALPHA: gradient transparency animation effect
  
  
Scale: gradient scaling animation effect
  
  
Translate: animation effect for moving the position of the screen
  
  
Rotate: animation effect of screen Rotation
  
  

  
  
Tween animation common attribute [type] Function
  
  
The duration [long] attribute is the animation duration in milliseconds.
  
  
When fillafter [Boolean] is set to true, the animation is applied after the animation ends.
  
  
When fillbefore [Boolean] is set to true, the animation is applied before the animation starts.
  
  

  
  
Interpolator specifies an animation plug-in that has some common plug-ins.
  
  
Accelerate_decelerate_interpolator
  
  
Accelerator-slowdown animation inserter
  
  
Accelerate_interpolator
  
  
Acceleration-animation insertor
  
  
Decelerate_interpolator
  
  
Slowdown-animation inserter
  
  
Other animation Effects
  
  
Repeatcount [int] Number of animation repetitions
  
  
Repeatmode [int] defines repeated behavior 1: Start again 2: plays backward
  
  
The interval between the startoffset [long] animations, starting from the time when the animation was stopped.
  
  
Zadjustment [int] defines the change of Z order of the animation 0: Keep Z order unchanged
  
  
1: Keep at the top
  
  
-1: Keep at the bottom layer
  
  
-->
  
  
<! --
  
  
Transparent animation control
  
  
-->
  
  
<Alpha
  
  
Android: fromalphi = "0.1"
  
  
Android: toalpha = "1.0"
  
  
Android: duration= "3000"
  
  
/>
  
  

  
  
<! -- Scale up and down the animation effect
  
  

  
  
Attribute: interpolator specifies an animation plug-in.
  
  

  
  
There are three types of animation inserts:
  
  
Accelerate_decelerate_interpolator acceleration-Deceleration animation inserter
  
  
Accelerate_interpolator acceleration-animation insertor
  
  
Decelerate_interpolator deceleration-animation insertor
  
  

  
  
Other animation Effects
  
  

  
  
The fromxscale attribute is the scaling size on the X coordinate when the animation starts.
  
  
The toxscale attribute is the scaling size on the X coordinate when the animation ends.
  
  

  
  
The fromyscale attribute is the scaling size on the Y coordinate at the start of the animation.
  
  
The toyscale attribute is the scaling size on the Y coordinate when the animation ends.
  
  

  
  
Note:
  
  
The preceding four property values
  
  
0.0 indicates shrinking to none
  
  
1.0 indicates normal scaling-free
  
  
A value smaller than 1.0 indicates contraction.
  
  
Value greater than 1.0 indicates Amplification
  
  

  
  
The ready TX attribute is the starting position of the animation relative to the X coordinate of the object.
  
  
The ready ty attribute is the starting position of the animation relative to the Y coordinate of the object.
  
  
Note:
  
  
The preceding two attribute values are from 0% to 100%.
  
  
50% indicates the point position on the X or Y coordinate of the object.
  
  
Long integer value:
  
  
The duration attribute is the animation duration.
  
  
Description: The time is in milliseconds.
  
  

  
  
Boolean value:
  
  
When the fillafter attribute is set to true, the animation is applied after the animation ends.
  
  
-->
  
  
<Scale
  
  
Android: interpolator = "@ Android: anim/accelerate_decelerate_interpolator"
  
  
Android: repeatcount = "1"
  
  

  
  
Android: fromxscale = "0.5"
  
  
Android: fromyscale = "0.5"
  
  
Android: toxscale = "1.4"
  
  
Android: toyscale = "1.4"
  
  
Android: Required Tx = "50%"
  
  
Android: Ty = "50%"
  
  
Android: fillafter = "false"
  
  
Android: duration= "3000"
  
  

  
  
/>
  
  
<! --
  
  
Animated effect translate
  
  

  
  
Fromxdelta toxdelta is the position on the X coordinate at the animation end start.
  
  
Fromydelta toydelta is the position on the Y coordinate when the animation ends.
  
  
-->
  
  
 
  
  
<Translate
  
  
Android: repeatcount = "2"
  
  
Android: fromxdelta = "-30"
  
  
Android: fromydelta = "-30"
  
  
Android: toxdelta = "-80"
  
  
Android: toydelta = "200"
  
  
Android: duration= "3000"
  
  
/>
  
  
<! --
  
  
Screen transfer rotation animation effect rotate
  
  

  
  
Fromdegrees indicates the object angle when the animation starts.
  
  
If the angle is negative, it indicates clockwise rotation.
  
  
If the angle is positive, it indicates clockwise rotation.
  
  
(Negative from -- to positive: clockwise rotation)
  
  
(Negative from -- to negative: counter-clockwise rotation)
  
  
(Positive from -- to positive: clockwise rotation)
  
  
(Positive from -- to negative: clockwise rotation)
  
  
The todegrees attribute indicates that the Rotation Angle of an object can be greater than 360 degrees when the animation ends.
  
  
Pivotx
  
  
Ty indicates the starting position of the animation relative to the X and Y coordinates of the object. The preceding two attribute values are from 0% to 100%.
  
  
50% indicates the point position on the X or Y coordinate of the object.
  
  
-->
  
  
<Rotate
  
  
Android: interpolator = "@ Android: anim/accelerate_interpolator"
  
  
Android: repeatcount = "2"
  
  
Android: fromdegrees = "0"
  
  
Android: todegrees = "+ 270"
  
  
Android: Required Tx = "50%"
  
  
Android: Ty = "50%"
  
  
Android: duration= "3000"
  
  
/>
  
  

  
  
</Set>
 
 

Usage: add the animation definition to a textview. The work to be done is simple:

 
 

  
  
Animation mAnimation ;   
  
  
mAnimation = AnimationUtils.loadAnimation(this, R.anim.anim);   
  
  
TextView text = (TextView)findViewById(R.id.textview00);   
  
  
text.setAnimation(mAnimation);   
 
 

Note that you must use the START () method of animationdrawable to start the animation. Whether or not the animation is complete, you must first call its stop () method to start the animation for the second time () method to start the animation again.