What are the ways to create animations in View?

Property Animation (API 11+). Animates any property of an object. The most flexible and powerful method. Uses classes ValueAnimator, ObjectAnimator, AnimatorSet.

• XML files in the res/animator/ directory.
• Programmatic creation.

<!-- res/animator/fade_in.xml -->
<objectAnimator
    android:propertyName="alpha"
    android:duration="500"
    android:valueFrom="0.0"
    android:valueTo="1.0"/>

val animator = ObjectAnimator.ofFloat(myView, "alpha", 0f, 1f)
animator.duration = 500
animator.start()

View Animation (Tween Animation). (Deprecated but still used for simple animations). Animates rendering properties of a View (position, size, transparency, rotation).

• XML files in the res/anim/ directory.
• Programmatic creation with classes AlphaAnimation, RotateAnimation, ScaleAnimation, TranslateAnimation, AnimationSet.

<!-- res/anim/slide_in_left.xml -->
<translate
    android:duration="500"
    android:fromXDelta="-100%"
    android:toXDelta="0%"/>

val animation = TranslateAnimation(
    Animation.RELATIVE_TO_SELF, -1f,
    Animation.RELATIVE_TO_SELF, 0f,
    Animation.RELATIVE_TO_SELF, 0f,
    Animation.RELATIVE_TO_SELF, 0f
)
animation.duration = 500
myView.startAnimation(animation)

Drawable Animation (Frame Animation). Sequential display of a series of Drawable resources (images) with a set interval.

• XML files in the res/drawable/ directory.
• Programmatic creation.

<!-- res/drawable/my_animation.xml -->
<animation-list android:oneshot="false">
    <item android:drawable="@drawable/frame1" android:duration="200"/>
    <item android:drawable="@drawable/frame2" android:duration="200"/>
    <item android:drawable="@drawable/frame3" android:duration="200"/>
</animation-list>

val animationDrawable = myView.background as AnimationDrawable
animationDrawable.start()

ConstraintLayout Animation. Animation of constraint changes within ConstraintLayout using ConstraintSet and TransitionManager.

val constraintSet1 = ConstraintSet().apply { clone(containerLayout) }
val constraintSet2 = ConstraintSet().apply { clone(this@MainActivity, R.layout.activity_main_alt) } // Another XML with constraints

// Transition with animation
TransitionManager.beginDelayedTransition(containerLayout)
constraintSet2.applyTo(containerLayout)

Layout Transition Animation. Automatic animation of changes in a parent container when adding, removing, or hiding child Views. Enabled with the attribute android:animateLayoutChanges="true".

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:animateLayoutChanges="true">
    <!-- Child Views -->
</LinearLayout>

Vector Drawable Animation (AnimatedVectorDrawable). Animation of vector image properties (e.g., path change, transparency).

• XML files in res/drawable/.

<!-- res/drawable/animated_path.xml -->
<animated-vector
    android:drawable="@drawable/vector_drawable">
    <target
        android:name="path_name"
        android:animation="@animator/path_morph"/>
</animated-vector>

 <!-- res/animator/path_morph.xml -->
 <objectAnimator
     android:propertyName="pathData"
     android:valueFrom="..."
     android:valueTo="..."
     android:duration="500"/>