Remove Java 8 usage from release

library/ui/src/main/java/com/google/android/exoplayer2/ui/DefaultTimeBar.java

@@ -220,8 +220,6 @@ public class DefaultTimeBar extends View implements TimeBar {
   private @Nullable boolean[] playedAdGroups;
 
   /** Creates a new time bar. */
-  // Suppress warnings due to usage of View methods in the constructor.
-  @SuppressWarnings("nullness:method.invocation.invalid")
   public DefaultTimeBar(Context context, AttributeSet attrs) {
     super(context, attrs);
     seekBounds = new Rect();
@@ -307,7 +305,12 @@ public class DefaultTimeBar extends View implements TimeBar {
     }
     formatBuilder = new StringBuilder();
     formatter = new Formatter(formatBuilder, Locale.getDefault());
-    stopScrubbingRunnable = () -> stopScrubbing(/* canceled= */ false);
+    stopScrubbingRunnable = new Runnable() {
+      @Override
+      public void run() {
+        stopScrubbing(false);
+      }
+    };
     if (scrubberDrawable != null) {
       scrubberPadding = (scrubberDrawable.getMinimumWidth() + 1) / 2;
     } else {