diff --git a/app/src/main/kotlin/li/songe/gkd/service/A11yContext.kt b/app/src/main/kotlin/li/songe/gkd/service/A11yContext.kt
index 57d632b..b33cf6a 100644
--- a/app/src/main/kotlin/li/songe/gkd/service/A11yContext.kt
+++ b/app/src/main/kotlin/li/songe/gkd/service/A11yContext.kt
@@ -35,14 +35,17 @@ class A11yContext(
     private var parentCache = LruCache<AccessibilityNodeInfo, AccessibilityNodeInfo>(MAX_CACHE_SIZE)
     var rootCache: AccessibilityNodeInfo? = null
 
-    private fun clearNodeCache() {
+    private fun clearNodeCache(t: Long = System.currentTimeMillis()) {
         if (META.debuggable) {
             val sizeList = listOf(childCache.size(), parentCache.size(), indexCache.size())
             if (sizeList.any { it > 0 }) {
                 Log.d("cache", "clear cache -> $sizeList")
             }
         }
-        rootCache = null
+        lastClearTime = t
+        if (rootCache?.packageName != topActivityFlow.value.appId) {
+            rootCache = null
+        }
         try {
             childCache.evictAll()
             parentCache.evictAll()
@@ -61,14 +64,12 @@ class A11yContext(
     private fun clearNodeCacheIfTimeout() {
         if (appChangeTime != lastAppChangeTime) {
             lastAppChangeTime = appChangeTime
-            lastClearTime = System.currentTimeMillis()
             clearNodeCache()
             return
         }
         val t = System.currentTimeMillis()
         if (t - lastClearTime > 30_000L) {
-            lastClearTime = t
-            clearNodeCache()
+            clearNodeCache(t)
         }
     }
 
@@ -83,7 +84,7 @@ class A11yContext(
         if (interruptInnerKey == interruptKey) return
         interruptInnerKey = interruptKey
         val rule = currentRule ?: return
-        if (!activityRuleFlow.value.currentRules.contains(rule)) return
+        if (!activityRuleFlow.value.currentRules.any { it === rule }) return
         if (rule.isPriority()) return
         if (META.debuggable) {
             Log.d("guardInterrupt", "中断 rule=${rule.statusText()}")