perf: reduce high-refresh ui churn

android/app/src/main/java/com/hyzq/boss/BossUi.java

@@ -1,7 +1,5 @@
 package com.hyzq.boss;
 
-import android.animation.AnimatorSet;
-import android.animation.ObjectAnimator;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
@@ -13,7 +11,6 @@ import android.graphics.Typeface;
 import android.graphics.drawable.GradientDrawable;
 import android.text.TextUtils;
 import android.util.TypedValue;
-import android.view.animation.AccelerateDecelerateInterpolator;
 import android.view.Gravity;
 import android.view.View;
 import android.widget.Button;
@@ -1382,62 +1379,12 @@ public final class BossUi {
                 dp(context, 4)
         );
         dot.setBackground(drawable);
-        dot.setAlpha(0.35f);
-        dot.setScaleX(0.82f);
-        dot.setScaleY(0.82f);
-
-        final AnimatorSet[] animatorRef = new AnimatorSet[1];
-        dot.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
-            @Override
-            public void onViewAttachedToWindow(View v) {
-                cancelConversationActivityAnimator(animatorRef);
-                animatorRef[0] = createConversationActivityAnimator(v, index);
-                animatorRef[0].start();
-            }
-
-            @Override
-            public void onViewDetachedFromWindow(View v) {
-                cancelConversationActivityAnimator(animatorRef);
-                v.animate().cancel();
-                v.setAlpha(0.35f);
-                v.setScaleX(0.82f);
-                v.setScaleY(0.82f);
-            }
-        });
+        dot.setAlpha(0.92f - (Math.min(index, 2) * 0.12f));
+        dot.setScaleX(1f);
+        dot.setScaleY(1f);
         return dot;
     }
 
-    private static AnimatorSet createConversationActivityAnimator(View dot, int index) {
-        long durationMs = 850L;
-        long startDelayMs = index * 120L;
-        ObjectAnimator alpha = ObjectAnimator.ofFloat(dot, View.ALPHA, 0.35f, 1f, 0.35f);
-        alpha.setDuration(durationMs);
-        alpha.setStartDelay(startDelayMs);
-        alpha.setRepeatCount(ObjectAnimator.INFINITE);
-
-        ObjectAnimator scaleX = ObjectAnimator.ofFloat(dot, View.SCALE_X, 0.82f, 1.1f, 0.82f);
-        scaleX.setDuration(durationMs);
-        scaleX.setStartDelay(startDelayMs);
-        scaleX.setRepeatCount(ObjectAnimator.INFINITE);
-
-        ObjectAnimator scaleY = ObjectAnimator.ofFloat(dot, View.SCALE_Y, 0.82f, 1.1f, 0.82f);
-        scaleY.setDuration(durationMs);
-        scaleY.setStartDelay(startDelayMs);
-        scaleY.setRepeatCount(ObjectAnimator.INFINITE);
-
-        AnimatorSet pulse = new AnimatorSet();
-        pulse.setInterpolator(new AccelerateDecelerateInterpolator());
-        pulse.playTogether(alpha, scaleX, scaleY);
-        return pulse;
-    }
-
-    private static void cancelConversationActivityAnimator(AnimatorSet[] animatorRef) {
-        if (animatorRef[0] != null) {
-            animatorRef[0].cancel();
-            animatorRef[0] = null;
-        }
-    }
-
     private static int resolveConversationContextColor(Context context, @Nullable String level) {
         if (TextUtils.isEmpty(level)) {
             return context.getColor(R.color.boss_text_soft);

android/app/src/test/java/com/hyzq/boss/BossUiConversationRowTest.java

@@ -103,6 +103,39 @@ public class BossUiConversationRowTest {
         assertEquals("上下文环本体应更细更轻", BossUi.dp(context, 16), ringWrap.getChildAt(0).getLayoutParams().height);
     }
 
+    @Test
+    public void buildConversationRow_usesStaticActivityDotsForHighRefreshSmoothness() {
+        Context context = RuntimeEnvironment.getApplication();
+        WechatSurfaceMapper.ConversationRow row = new WechatSurfaceMapper.ConversationRow(
+                "硬件审计协作",
+                "Mac Studio",
+                "检查摄像头供电链路",
+                "09:42",
+                0,
+                "",
+                2,
+                false,
+                "M",
+                "W",
+                new WechatSurfaceMapper.GroupAvatarMember[0],
+                false,
+                null,
+                null,
+                -1,
+                false,
+                false
+        );
+
+        LinearLayout rowView = BossUi.buildConversationRow(context, row, null);
+        LinearLayout trailingColumn = (LinearLayout) rowView.getChildAt(2);
+        LinearLayout activityWrap = (LinearLayout) trailingColumn.getChildAt(1);
+        View firstDot = activityWrap.getChildAt(0);
+
+        assertEquals("高刷设备上活动点应保持静态，不再从低 alpha 开始做无限动画", 0.92f, firstDot.getAlpha(), 0.01f);
+        assertEquals("高刷设备上活动点不应缩放动画起步", 1f, firstDot.getScaleX(), 0.01f);
+        assertEquals("高刷设备上活动点不应缩放动画起步", 1f, firstDot.getScaleY(), 0.01f);
+    }
+
     @Test
     public void buildConversationRow_usesSubtlePinnedBackgroundWithoutPinnedBadge() {
         Context context = RuntimeEnvironment.getApplication();