Creating animation in Android Studio: from XML to Jetpack Compose

The development of modern mobile applications is impossible without high-quality visual interaction. Users are accustomed to the smoothness, responsiveness and aesthetics that well-implemented animations in Android Studioprovide. This is not just an interface decoration, but a powerful UX tool that directs the user's attention, gives feedback on actions and hides delays in loading content.

In the Android ecosystem, there are several approaches to bringing the interface to life. Starting from classic View Animation, based on XML resources, to advanced Property Animation, which allows you to change the real properties of objects, and revolutionary Jetpack Compose. The choice of a specific tool depends on the version minSdkVersion of your project and the complexity of the required effect.

In this article we will look in detail at how to make animation in Android Studio, using various approaches. You'll learn how to create smooth transitions between screens, animate the resizing of elements, and implement complex motion scenarios that will make your application a professional product.

View Animation Basics and Working with XML

The traditional way to bring life to an interface is to use so-called View Animation (or Tween Animation). This method works by changing the visual representation of an object without changing its actual properties in the layout. For example, a button may visually move to the right, but the system will still consider it to be in its original position when processing clicks.

To implement such effects, XML files are created in Android Studio in the folder res/anim. This allows you to separate the animation logic from the Kotlin or Java code, making the project cleaner and more understandable. You can define the parameters for rotation, scaling, moving and changing transparency by setting the duration and the interpolator, which is responsible for the speed of movement.

Animation is applied programmatically through the method startAnimation() of the target View. Although this approach is considered obsolete for complex scenarios, it is ideal for simple effects of elements appearing or disappearing that do not require interaction with the physical properties of the object after the animation is complete.

• 🔄 AlphaAnimation — controls the transparency of the object, allowing it to fade in or out.
• 📏 ScaleAnimation — changes the size of the object along the X and Y axes, useful for zoom-in effects.
• ↔️ TranslateAnimation — moves an object in space, creating the feeling of sliding.
• 🌀 RotateAnimation — rotates an object around a given point, often used for loading indicators.

⚠️ Attention: View Animation only changes the rendering. If you animated a button's movement but clicked into its new visual position, the click event may not fire because the logical coordinates remain the same.

Power of Property Animation and ObjectAnimator

Starting with Android version 3.0, the platform received a powerful Property Animation system. Unlike the previous method, here the real properties of the object are changed, such as translationX, alpha or scaleX. This means that after the animation is completed, the object will actually remain at the new coordinate point, and all input events will be processed correctly.

The main class to work with is ObjectAnimator. It allows you to animate any property of an object that has a corresponding setter (method for setting a value). For example, to move a button to the right, you animate the property "translationX". The system automatically calls the method setTranslationX(float value) during the entire duration of the animation.

To create complex sequences or run multiple animations in parallel, the class AnimatorSetis used. It allows you to build a chain of actions: first the element increases, then rotates, and only after that changes color. The flexibility of this approach makes it the standard for modern native development for Android.

val animator = ObjectAnimator.ofFloat(button, "translationX", 0f, 300f)
animator.duration = 1000
animator.start()

It is important to understand the difference between the ofFloat, ofInt and ofObjectmethods. The method you choose depends on the data type of the property being animated. If you are working with custom objects, make sure they have public getter and setter methods for target fields, otherwise ObjectAnimator cannot change their state.

Animation of transitions between screens (Transition Framework)

The user experience greatly benefits when transitions between activities or fragments look coherent. The Transition Framework, introduced in Android 5.0, allows you to create common animations for elements that are present on both screens. This creates a continuity effect and helps the user understand the navigation context.

To implement this, you need to enable transition support in the application theme and define names for Shared Elements. When a user clicks on an image in the list, it can "fly" to a new screen, expanding into a full-screen view. This is achieved using classes ActivityOptions and method makeSceneTransitionAnimation.

In addition to common elements, there are Scene Transitions that control the appearance and disappearance of groups of widgets within one layout. You can customize exactly how elements enter the scene: one at a time, cascaded, or simultaneously, using built-in transition classes like Slide, Fade or Explode.

Transition Type	Effect Description	Implementation Class
Fade	Fade transparency	Fade
Slide	Element leaving the edge of the screen	Slide
Explode	Elements flying away from the center	Explode
ChangeBounds	Animation of changing size and position	ChangeBounds

⚠️ Attention: For transitions between activities to work, you must disable the standard window animation in the theme or override it, otherwise visual effects may conflict and look twitchy.

Creating frame animations (Frame Animation)

Sometimes you need to reproduce a sequence of images, similar to how a film works. This approach is called frame animation (Frame Animation) and is implemented through the class AnimationDrawable. This is ideal for creating simple loading icons, click effects, or characters that change poses.

In Android Studio, you create an XML file in a folder res/drawablewhere you list all the frames (drawable) and the time they are shown. Each frame can be displayed for a different number of milliseconds, allowing for rhythmic movements. After loading the resource into ImageView, you have access to the animation object and control how it starts and stops.

The main disadvantage of this method is memory consumption. Since all frames must be loaded into RAM at the same time, using high-quality images in large quantities can lead to OutOfMemoryError. It is recommended to optimize graphics and use this method only for short looping animations with a small number of frames.

<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false">
<item android:drawable="@drawable/frame_1" android:duration="100" />
<item android:drawable="@drawable/frame_2" android:duration="100" />
</animation-list>

How to avoid memory leaks?

Do not run AnimationDrawable in the onCreate method, since the widget is not yet attached to the window. Use a post-query or run animation in onWindowFocusChanged.

The Jetpack Compose and Animation Revolution

With the advent of Jetpack Compose the approach to animations in Android has changed dramatically. Instead of manipulating View objects, you are now animating values ​​inside the compositing UI function. This makes the code declarative, predictable, and much easier to maintain. Animations become part of the interface state.

The main tool here is a function animate*, for example animateFloatAsState or animateColorAsState. You simply bind the animated value to a component property (such as size or color), and when the original state changes, the system automatically triggers a fade to the new value. You do not need to create controllers or listeners.

For more complex scenarios where manual control of animation phases is required, updateTransitionis used. It allows you to synchronize many properties (size, transparency, rotation angle) depending on the current state (for example, "Expanded" or "Collapsed"). This opens up the possibility of creating incredibly rich interfaces with a minimum amount of code.

• ✨ animateContentSize —a modifier that automatically animates the container's resizing as content is added.
• 🔄 InfiniteTransition —allows you to run endless animations, useful for indicators or background effects.
• 🎯 TargetValue —the concept of a target value that the animation aims for, controlled state.

⚠️ Attention: In Jetpack Compose, animations are recalculated with each recomposition. Make sure you don't unnecessarily create new animation objects inside a composition block to avoid breaking performance.

Third Party Libraries and Performance Optimizations

Sometimes standard tools are not enough to implement specific design solutions. In such cases, third-party libraries come to the rescue. The most popular is Lottie from Airbnb, which allows you to play animations created in Adobe After Effects and exported to JSON format. This gives designers complete creative freedom without increasing the size of the APK with resource files.

However, using any animations requires attention to performance. Frequent screen redrawing (overdraw) and complex calculations on the main thread can lead to a drop in FPS and interface lags. Always test animations on real mid- and low-end devices, not just on an emulator or flagships.

The tool Layout Inspector and profiler in Android Studio will help identify bottlenecks. If the animation causes a load on the CPU or GPU, try simplifying it, reducing the number of frames, or using hardware acceleration by adding a flag LAYER_TYPE_HARDWARE to the animated View while the animation is running.

Is it possible to animate text changes in a TextView?

Yes, it is possible. In the classic View approach, you can animate transparency: make the text transparent, change it and make it visible again. Jetpack Compose has a special modifier animateContentSize and functions for animating string values, although more often it is the container around the text that is animated.

What is the difference between Animator and Animation?

The Animation class (View Animation) changes only the visual display, without affecting the real properties of the object. The Animator (Property Animation) class changes the real values of the object's fields (coordinates, transparency, size), which affects the logic of the application.

How to stop the animation before it ends?

For Property Animation, just call the method cancel() or end() y Animator object. For View Animation, a method is used clearAnimation() from the View itself, which instantly resets the visual state to its original state.

Does Lottie support vector graphics?

Yes, Lottie natively works with vector data exported from After Effects via the Bodymovin plugin. This ensures perfect quality on screens of any pixel density without the need to create assets for different dpis.

Do I need to use Coroutines for animations?

Not necessary. Most animation APIs in Android work asynchronously within themselves. However, if you need to perform some action strictly after the animation has completed, using coroutines with suspendCoroutine or listeners AnimatorListener will make the code cleaner and clearer.