- CenterPlayButton UI bug fixed when using Material 3

Author: luis901101

lib/src/center_play_button.dart

@@ -24,27 +24,29 @@ class CenterPlayButton extends StatelessWidget {
     return Container(
       color: Colors.transparent,
       child: Center(
-        child: AnimatedOpacity(
-          opacity: show ? 1.0 : 0.0,
-          duration: const Duration(milliseconds: 300),
-          child: Container(
-            decoration: BoxDecoration(
-              color: backgroundColor,
-              shape: BoxShape.circle,
-            ),
-            child: Padding(
-              padding: const EdgeInsets.all(12.0),
-              // Always set the iconSize on the IconButton, not on the Icon itself:
-              // https://github.com/flutter/flutter/issues/52980
-              child: IconButton(
-                iconSize: 32,
-                icon: isFinished
-                    ? Icon(Icons.replay, color: iconColor)
-                    : AnimatedPlayPause(
-                        color: iconColor,
-                        playing: isPlaying,
-                      ),
-                onPressed: onPressed,
+        child: UnconstrainedBox(
+          child: AnimatedOpacity(
+            opacity: show ? 1.0 : 0.0,
+            duration: const Duration(milliseconds: 300),
+            child: Container(
+              decoration: BoxDecoration(
+                color: backgroundColor,
+                shape: BoxShape.circle,
+              ),
+              child: Padding(
+                padding: const EdgeInsets.all(12.0),
+                // Always set the iconSize on the IconButton, not on the Icon itself:
+                // https://github.com/flutter/flutter/issues/52980
+                child: IconButton(
+                  iconSize: 32,
+                  icon: isFinished
+                      ? Icon(Icons.replay, color: iconColor)
+                      : AnimatedPlayPause(
+                          color: iconColor,
+                          playing: isPlaying,
+                        ),
+                  onPressed: onPressed,
+                ),
               ),
             ),
           ),