diff --git a/app/src/main/java/com/heyongrui/firework/MainActivity.java b/app/src/main/java/com/heyongrui/firework/MainActivity.java
index 4247adb..7cf0f66 100644
--- a/app/src/main/java/com/heyongrui/firework/MainActivity.java
+++ b/app/src/main/java/com/heyongrui/firework/MainActivity.java
@@ -17,7 +17,7 @@
 
 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
 
-    private BezierFireworkAnim fireworkAnim;
+    private BezierFireworkAnim fireworkAnim;//贝塞尔抛物线动画
     private Drawable redHeartBg;
     private Drawable grayBg;