adding the topics as well

android/examples/Topics/Drawing/Animator/Animator.pde

@@ -0,0 +1,49 @@
+/**
+ * Animator.
+ * 
+ * Click and drag to draw and start the program.
+ * 
+ * A simple animation tool that displays a continuous cycle of
+ * twenty-four images. Each image is displayed for 30 milliseconds 
+ * to create animation. While each image is displayed, it’s possible 
+ * to draw directly into it by pressing the mouse and moving the cursor. 
+ * 
+ */
+
+int currentFrame = 0;
+PImage[] frames = new PImage[24];
+int lastTime = 0;
+
+void setup() 
+{
+  size(640, 200);
+  strokeWeight(12);
+  smooth();
+  background(204);
+  for (int i = 0; i < frames.length; i++) {
+    frames[i] = get(); // Create a blank frame
+  }
+}
+
+void draw() 
+{
+  int currentTime = millis();
+  if (currentTime > lastTime+30) {
+    nextFrame();
+    lastTime = currentTime;
+  }
+  if (mousePressed == true) {
+    line(pmouseX, pmouseY, mouseX, mouseY);
+  }
+}
+
+void nextFrame() 
+{
+  frames[currentFrame] = get(); // Get the display window
+  currentFrame++; // Increment to next frame
+  if (currentFrame >= frames.length) {
+    currentFrame = 0;
+  }
+  image(frames[currentFrame], 0, 0);
+}
+