How to Add Animated Vector Drawable Animation?
Animated Vector Drawables are a powerful way to add engaging animations to your Android apps using vector graphics. They offer several advantages over traditional animations, including smaller file sizes, better scalability, and greater control over the animation process. In this article, we’ll explore how to integrate Animated Vector Drawable animations into your Android projects.
Creating an Animated Vector Drawable
Before we dive into adding the animation, let’s create an Animated Vector Drawable resource:
1. Creating the XML file:
- Open your Android Studio project and navigate to the
drawable
folder. - Create a new XML file and name it (e.g.,
animated_rotate.xml
). - Paste the following code into the XML file:
<?xml version="1.0" encoding="utf-8"?> <animated-vector xmlns:android="http://schemas.android.com/apk/res/android"> <vector android:name="vector" android:width="24dp" android:height="24dp" android:viewportWidth="24" android:viewportHeight="24"> <path android:name="arrow" android:pathData="M12,2L12,22" android:strokeColor="#FF0000" android:strokeWidth="2dp" android:strokeLineCap="round" /> </vector> <target android:name="arrow"> <aapt:attr name="android:rotation"> <anim:rotate android:duration="1000" android:repeatCount="infinite" android:repeatMode="restart" android:fromDegrees="0" android:toDegrees="360" /> </aapt:attr> </target> </animated-vector>
Explanation:
<animated-vector>
: The root element defining the animated vector drawable.<vector>
: The vector graphic itself, containing paths, groups, and other drawable elements.<target>
: Specifies the element that will be animated. In this case, it’s the “arrow” path.<aapt:attr>
: Defines the animation attribute we want to modify (e.g., rotation, translation, scale).<anim:rotate>
: The specific animation type applied to the target element.
Using the Animated Vector Drawable
Once the Animated Vector Drawable is created, we can use it in our layouts or code:
1. In XML Layout:
<ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/animated_rotate" />
2. In Java Code:
ImageView imageView = findViewById(R.id.imageView); imageView.setImageResource(R.drawable.animated_rotate);
Animation Types and Attributes
Animated Vector Drawables support various animation types with customizable attributes. Here’s a table outlining some common animation types and their associated attributes:
Animation Type | Attributes | Description |
---|---|---|
Rotation | android:fromDegrees , android:toDegrees , android:pivotX , android:pivotY |
Rotates the target element. |
Translation | android:fromXDelta , android:toXDelta , android:fromYDelta , android:toYDelta |
Moves the target element. |
Scaling | android:fromXScale , android:toXScale , android:fromYScale , android:toYScale |
Scales the target element. |
Alpha | android:fromAlpha , android:toAlpha |
Changes the target element’s opacity. |
Path | android:pathData |
Animates the path of the target element. |
Color | android:fillColor , android:strokeColor |
Animates the color of the target element. |
Conclusion
Animated Vector Drawables offer a streamlined approach to creating captivating animations within your Android apps. By understanding their structure and available animation types, you can effortlessly incorporate visually appealing animations into your user interfaces. This results in engaging user experiences and enhanced visual appeal for your apps.