diff --git a/app/src/main/java/com/sw/platecabinet/activity/BaseActivity.kt b/app/src/main/java/com/sw/platecabinet/activity/BaseActivity.kt
index 5762ddd..a171b4a 100644
--- a/app/src/main/java/com/sw/platecabinet/activity/BaseActivity.kt
+++ b/app/src/main/java/com/sw/platecabinet/activity/BaseActivity.kt
@@ -129,12 +129,16 @@ abstract class BaseActivity<VB : ViewBinding> : AppCompatActivity() {
 
     fun updateTime() {
         headerBinding?.let {
+            // 双击判定窗口放宽至 600ms：默认 300ms 对触摸屏上的手动双击过短，
+            // 两次点击间隔常在 300~600ms，导致设置页"点很多次才进"
             it.tvLeftDate.clickWithCoroutines(
+                doubleClickInterval = 600,
                 onDoubleClick = {
                     onLeftDoubleClick()
                 }
             )
             it.tvRightTime.clickWithCoroutines(
+                doubleClickInterval = 600,
                 onDoubleClick = {
                     onRightDoubleClick()
                 }
diff --git a/app/src/main/java/com/sw/platecabinet/activity/LoginByFaceActivity.kt b/app/src/main/java/com/sw/platecabinet/activity/LoginByFaceActivity.kt
index bcef431..29355d5 100644
--- a/app/src/main/java/com/sw/platecabinet/activity/LoginByFaceActivity.kt
+++ b/app/src/main/java/com/sw/platecabinet/activity/LoginByFaceActivity.kt
@@ -698,6 +698,8 @@ class LoginByFaceActivity : BaseActivity<ActivityLoginFaceBinding>(),
 
             override fun onCameraClosed() {
                 Timber.i("initRgbCamera onCameraClosed: ")
+                // 相机关闭时清空预览画面，防止 TextureView 冻结残留上一位用户的帧
+                clearPreviewFrame()
             }
 
             override fun onCameraError(e: java.lang.Exception) {
@@ -763,11 +765,30 @@ class LoginByFaceActivity : BaseActivity<ActivityLoginFaceBinding>(),
         checkCameraPermission()
     }
 
+    /**
+     * 清除预览 TextureView 中缓存的最后一帧画面（提交一帧全黑）。
+     * 相机关闭后 TextureView 会冻结保留最后一帧，若不清除，
+     * 下一位用户重启识别时会先闪现上一位用户的画面。
+     */
+    private fun clearPreviewFrame() {
+        val previewView = binding.dualCameraTexturePreviewRgb
+        if (!previewView.isAvailable) return
+        runCatching {
+            val canvas = previewView.lockCanvas() ?: return@runCatching
+            canvas.drawColor(android.graphics.Color.BLACK)
+            previewView.unlockCanvasAndPost(canvas)
+        }.onFailure {
+            loadLogInfo("clearPreviewFrame 失败: ${it.message}")
+        }
+    }
+
     private fun resumeCamera() {
 //        isRecognition = true
         val helper = rgbCameraHelper
         if (helper != null && helper.isStopped) {
             loadLogInfo("collectFace,resumeCamera: ")
+            // 重启相机前先清空残留帧，避免闪现上一位用户的画面
+            clearPreviewFrame()
             isRecognition = true
             helper.start()
         } else {
diff --git a/app/src/main/res/layout/item_title_time.xml b/app/src/main/res/layout/item_title_time.xml
index e80ab95..e37326b 100644
--- a/app/src/main/res/layout/item_title_time.xml
+++ b/app/src/main/res/layout/item_title_time.xml
@@ -11,6 +11,9 @@
         android:id="@+id/tvLeftDate"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:minHeight="64dp"
+        android:gravity="center_vertical"
+        android:paddingHorizontal="12dp"
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintBottom_toBottomOf="parent">
@@ -36,6 +39,8 @@
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:gravity="center_vertical"
+        android:minHeight="64dp"
+        android:paddingHorizontal="12dp"
         android:textColor="#FFF0C8B4"
         android:textSize="24sp"
         app:layout_constraintEnd_toEndOf="parent"