Android gap animation translate, scale, alpha, rotate

Patch animation
  Between the two keyframes, you need to do “ Patch animation ”, In order to realize the movement of pictures ; The interpolation frame between two key frames after interpolation animation is automatically calculated by computer .

1. transparency ： alpha

2. Displacement ：translate

3. The zoom ：scale

4. rotate ： rotate

android:interpolator（ Interpolator ）

1. Animate to speed up the animation ( The animation is playing faster and faster )
   android:interpolator="@android:anim/accelerate_interpolator"
2. Animate to slow down ( The animation is playing more and more slowly )
   android:interpolator="@android:anim/decelerate_interpolator"
3. Animate to accelerate first and decelerate ( The fastest way to start Gradually slow down )
   android:interpolator="@android:anim/accelerate_decelerate_interpolator"
4. First reverse the execution of a paragraph , Then accelerate the reverse direction back （ It's equivalent to our spring , First, compress a short segment in reverse , Then it's speeding up the pop-up ）
   android:interpolator="@android:anim/anticipate_interpolator"
5. As above, reverse a paragraph first , And then accelerate the reverse , After the execution, it has its own rebound effect （ More vivid spring effect ）
   android:interpolator="@android:anim/anticipate_overshoot_interpolator"
6. After execution, it will spring back and jump for several segments （ It's equivalent to dropping a ball of leather from the sky , It beats a few times to the ground ）
   android:interpolator="@android:anim/bounce_interpolator"
7. loop , Animation cycle a certain number of times , The value changes to a sine function ：Math.sin(2* mCycles* Math.PI* input)
   android:interpolator="@android:anim/cycle_interpolator"
8. Linear uniform change
   android:interpolator="@android:anim/linear_interpolator" Linear uniform change
9. Speed up execution , Rebound at the end
   android:interpolator="@android:anim/overshoot_interpolator"

<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_decelerate_interpolator">

<!--  
fromXDelta,fromYDelta   	 At the beginning X,Y coordinate , The coordinates in the lower right corner of the screen are X:320,Y:480 
toXDelta, toYDelta     	 At the end of the animation X,Y The coordinates of  --> 
<!--  

 The common ones are accelerometers and decelerators 	        accelerate_decelerate_interpolator
 Speed up the inserter 		    	        accelerate_interpolator,
 The retarder inserts 		    	        decelerate_interpolator. 
fromXScale,fromYScale,          Before the animation starts X,Y Zoom in ,0.0 Not shown ,  1.0 Normal size 
toXScale,toYScale,	         The final zoom multiple of the animation , 1.0 Normal size , Greater than 1.0 Zoom in 
pivotX,  pivotY	    	 Animation start position , Percentage relative to screen , All two are 50% The animation starts in the middle of the screen  
startOffset,		    	 The interval between multiple animations , If only once , It will be suspended before execution ,
		    		 Unit millisecond  duration, The amount of time an animation takes , Unit millisecond ,
		    		 The smaller the value, the faster the animation  repeatCount, Count of animation repetitions , The animation will execute the value +1 Time  
			    	repeatMode, The pattern of animation repetition ,reverse Is reverse , On the second execution , The animation will go in the opposite direction .
			    	restart To re execute , Direction unchanged  -->

<scale
    android:startOffset="0"  
    android:fromXScale="0.0"
    android:fromYScale="0.0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:toXScale="1.0"
    android:toYScale="1.0"
    android:repeatMode="reverse"
    android:duration = "3000"/>
    
<!--  
    fromAlpha: In the beginning, transparency  
    toAlpha：  Transparency at the end  
    duration： Animation duration  -->
    
 <alpha
        android:fromAlpha="1.0"
        android:toAlpha="0.5"
        android:duration="3000"/>
        <!--  fromDegrees  	 The angle at which the animation starts  
      toDegrees    	 The rotation angle of the object at the end of the animation , Positive represents clockwise    
      pivotX  	 Property is the... Of the animation relative to the object X The starting position of the coordinates 
      pivotY 	 Property is the... Of the animation relative to the object Y The starting position of the coordinates     -->
<rotate android:fromDegrees="0"
        android:toDegrees="720"
        android:pivotY="50%"
        android:pivotX="50%"
        android:duration = "3000"/>
<!--  
fromXDelta,fromYDelta    At the beginning X,Y coordinate , Coordinates of the lower right corner of the screen X:320,Y:480 
toXDelta, toYDelta      At the end of the animation X,Y The coordinates of  -->
    <translate
        android:fromXDelta="0"
        android:toXDelta="100"
        android:fromYDelta="0"
        android:toYDelta="100" />
</set>