KG Charging Animation: Add more animations [2/3]

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
diff --git a/lottie/src/main/java/com/airbnb/lottie/LottieAnimationView.java b/lottie/src/main/java/com/airbnb/lottie/LottieAnimationView.java
index 44b58bb..f769208 100644
--- a/lottie/src/main/java/com/airbnb/lottie/LottieAnimationView.java
+++ b/lottie/src/main/java/com/airbnb/lottie/LottieAnimationView.java
@@ -130,6 +130,12 @@
     init(attrs);
   }
 
+  public void setFileName(String fileName) {
+    if (fileName != null) {
+      setAnimation(fileName);
+    }
+  }
+
   private void init(@Nullable AttributeSet attrs) {
     TypedArray ta = getContext().obtainStyledAttributes(attrs, R.styleable.LottieAnimationView);
     if (!isInEditMode()) {