What types of animations do you know?

In Android SDK, there are several main types of animations:

View Animations (Tween Animations): Simple animations applied to View properties (position, size, rotation, alpha). They work by changing the rendering parameters of the View but do not alter its actual boundaries.

Examples: RotateAnimation, AlphaAnimation, TranslateAnimation, ScaleAnimation.

Described in XML files in the res/anim directory or programmatically.
```

<alpha
    android:fromAlpha="0.0"
    android:toAlpha="1.0"
    android:duration="500" />
```
```
// In Kotlin code
val fadeIn = AlphaAnimation(0f, 1f)
fadeIn.duration = 500
myView.startAnimation(fadeIn)
```

Property Animations: A more powerful and flexible type of animations. They animate real object properties (not just Views), changing their values directly. They work with any objects and properties that have setters.

Examples: ObjectAnimator, ValueAnimator, AnimatorSet.

Can be described in XML files in the res/animator directory or programmatically.

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

// In Kotlin code
val fadeIn = ObjectAnimator.ofFloat(myView, "alpha", 0f, 1f)
fadeIn.duration = 500
fadeIn.start()

Drawable Animations: Animations that are a sequence of Drawable resources. Used for frame-by-frame animation.

Described in XML files in the res/drawable or res/anim directories.

<!-- res/drawable/spinning_wheel.xml -->
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
    android:oneshot="false">
    <item android:drawable="@drawable/wheel_frame_1" android:duration="50" />
    <item android:drawable="@drawable/wheel_frame_2" android:duration="50" />
    <item android:drawable="@drawable/wheel_frame_3" android:duration="50" />
</animation-list>

// In Kotlin code
val spinningWheel = myImageView.drawable as AnimationDrawable
spinningWheel.start()

Transition API: Animations applied to changes in the View hierarchy, such as when a View appears/disappears or changes position and size. Used for animating transitions between different UI states.

Works with the concepts of Scenes (the state of a View container) and Transitions (defining the animation between states).

Examples: Fade, Slide, ChangeBounds.
```
// In Kotlin code
TransitionManager.beginDelayedTransition(rootLayout)
// Change View parameters inside rootLayout (e.g., visibility)
myView.visibility = View.VISIBLE
```

MotionLayout: A subclass of ConstraintLayout designed for creating complex animations based on constraints. Allows defining the initial and final UI states with ConstraintSet and animating transitions between them.

Described in layout XML files, often with a separate MotionScene XML file.

<!-- In MotionLayout XML layout -->
<MotionScene <!-- ... --> >
    <Transition
        motion:constraintSetStart="@+id/start"
        motion:constraintSetEnd="@+id/end"
        motion:duration="1000">
        <!-- ... Interpolators, KeyFrames etc. -->
    </Transition>

    <ConstraintSet android:id="@+id/start">
        <!-- Constraints for the initial state -->
    </ConstraintSet>

    <ConstraintSet android:id="@+id/end">
        <!-- Constraints for the final state -->
    </ConstraintSet>
</MotionScene>