diff --git a/android/app/src/main/java/com/hyzq/boss/ProjectDetailActivity.java b/android/app/src/main/java/com/hyzq/boss/ProjectDetailActivity.java
index 1916277..845ef8f 100644
--- a/android/app/src/main/java/com/hyzq/boss/ProjectDetailActivity.java
+++ b/android/app/src/main/java/com/hyzq/boss/ProjectDetailActivity.java
@@ -50,6 +50,43 @@ public class ProjectDetailActivity extends BossScreenActivity {
     private ActivityResultLauncher<Intent> conversationInfoLauncher;
     private ActivityResultLauncher<Intent> forwardTargetLauncher;
 
+    static final class ChromeBindings {
+        final boolean multiSelecting;
+        final boolean showComposer;
+        final boolean showMultiSelectBar;
+        final boolean showRefresh;
+        final boolean showHeaderAction;
+        final boolean enableForwardButton;
+        final boolean enablePullRefresh;
+        final String backLabel;
+        final String title;
+        final String subtitle;
+
+        ChromeBindings(
+                boolean multiSelecting,
+                boolean showComposer,
+                boolean showMultiSelectBar,
+                boolean showRefresh,
+                boolean showHeaderAction,
+                boolean enableForwardButton,
+                boolean enablePullRefresh,
+                String backLabel,
+                String title,
+                String subtitle
+        ) {
+            this.multiSelecting = multiSelecting;
+            this.showComposer = showComposer;
+            this.showMultiSelectBar = showMultiSelectBar;
+            this.showRefresh = showRefresh;
+            this.showHeaderAction = showHeaderAction;
+            this.enableForwardButton = enableForwardButton;
+            this.enablePullRefresh = enablePullRefresh;
+            this.backLabel = backLabel;
+            this.title = title;
+            this.subtitle = subtitle;
+        }
+    }
+
     @Override
     protected int getLayoutResId() {
         return R.layout.activity_project_chat;
@@ -467,30 +504,31 @@ public class ProjectDetailActivity extends BossScreenActivity {
                 currentScreenTitle,
                 currentScreenSubtitle
         );
+        ChromeBindings bindings = buildChromeBindings(chromeState, isComposerBusy());
         if (composerRow != null) {
-            composerRow.setVisibility(chromeState.showComposer ? View.VISIBLE : View.GONE);
+            composerRow.setVisibility(bindings.showComposer ? View.VISIBLE : View.GONE);
         }
         if (multiSelectActionsLayout != null) {
-            multiSelectActionsLayout.setVisibility(chromeState.showMultiSelectBar ? View.VISIBLE : View.GONE);
+            multiSelectActionsLayout.setVisibility(bindings.showMultiSelectBar ? View.VISIBLE : View.GONE);
         }
         if (multiSelectForwardButton != null) {
-            multiSelectForwardButton.setEnabled(!isComposerBusy() && chromeState.forwardEnabled);
+            multiSelectForwardButton.setEnabled(bindings.enableForwardButton);
         }
         if (refreshLayout != null) {
-            refreshLayout.setEnabled(!chromeState.multiSelecting);
+            refreshLayout.setEnabled(bindings.enablePullRefresh);
         }
-        backButton.setText(chromeState.backLabel);
+        backButton.setText(bindings.backLabel);
         backButton.setOnClickListener(v -> {
-            if (chromeState.multiSelecting) {
+            if (bindings.multiSelecting) {
                 exitMultiSelect();
                 return;
             }
             finish();
         });
-        refreshButton.setVisibility(chromeState.showRefresh ? View.VISIBLE : View.GONE);
-        titleView.setText(chromeState.title);
-        subtitleView.setText(chromeState.subtitle);
-        if (chromeState.showHeaderAction) {
+        refreshButton.setVisibility(bindings.showRefresh ? View.VISIBLE : View.GONE);
+        titleView.setText(bindings.title);
+        subtitleView.setText(bindings.subtitle);
+        if (bindings.showHeaderAction) {
             setHeaderAction(WechatSurfaceMapper.conversationInfoActionLabel(), v -> openConversationInfo());
         } else {
             hideHeaderAction();
@@ -663,6 +701,24 @@ public class ProjectDetailActivity extends BossScreenActivity {
         return message.optString("body", "转发的聊天记录");
     }
 
+    static ChromeBindings buildChromeBindings(
+            ProjectChatUiState.ChromeState chromeState,
+            boolean composerBusy
+    ) {
+        return new ChromeBindings(
+                chromeState.multiSelecting,
+                chromeState.showComposer,
+                chromeState.showMultiSelectBar,
+                chromeState.showRefresh,
+                chromeState.showHeaderAction,
+                !composerBusy && chromeState.forwardEnabled,
+                !chromeState.multiSelecting,
+                chromeState.backLabel,
+                chromeState.title,
+                chromeState.subtitle
+        );
+    }
+
     private List<String> collectMessageIds(@Nullable JSONArray messages) {
         ArrayList<String> ids = new ArrayList<>();
         if (messages == null) {
diff --git a/android/app/src/test/java/com/hyzq/boss/ProjectDetailActivityChromeBindingsTest.java b/android/app/src/test/java/com/hyzq/boss/ProjectDetailActivityChromeBindingsTest.java
new file mode 100644
index 0000000..d20d18d
--- /dev/null
+++ b/android/app/src/test/java/com/hyzq/boss/ProjectDetailActivityChromeBindingsTest.java
@@ -0,0 +1,57 @@
+package com.hyzq.boss;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class ProjectDetailActivityChromeBindingsTest {
+    @Test
+    public void multiSelectBindingsHideComposerAndDisableRefresh() {
+        ProjectChatUiState.SelectionState selectionState = ProjectChatUiState.selectOnly("m1");
+        selectionState = ProjectChatUiState.toggleSelection(selectionState, "m2");
+        ProjectChatUiState.ChromeState chromeState = ProjectChatUiState.resolveChromeState(
+                selectionState,
+                true,
+                "北区试产线回归",
+                "归档确认"
+        );
+
+        ProjectDetailActivity.ChromeBindings bindings =
+                ProjectDetailActivity.buildChromeBindings(chromeState, false);
+
+        assertTrue(bindings.multiSelecting);
+        assertFalse(bindings.showComposer);
+        assertTrue(bindings.showMultiSelectBar);
+        assertFalse(bindings.showRefresh);
+        assertFalse(bindings.showHeaderAction);
+        assertTrue(bindings.enableForwardButton);
+        assertFalse(bindings.enablePullRefresh);
+        assertEquals("取消", bindings.backLabel);
+    }
+
+    @Test
+    public void normalBindingsRestoreConversationChrome() {
+        ProjectChatUiState.ChromeState chromeState = ProjectChatUiState.resolveChromeState(
+                ProjectChatUiState.emptySelection(),
+                true,
+                "北区试产线回归",
+                "归档确认"
+        );
+
+        ProjectDetailActivity.ChromeBindings bindings =
+                ProjectDetailActivity.buildChromeBindings(chromeState, true);
+
+        assertFalse(bindings.multiSelecting);
+        assertTrue(bindings.showComposer);
+        assertFalse(bindings.showMultiSelectBar);
+        assertTrue(bindings.showRefresh);
+        assertTrue(bindings.showHeaderAction);
+        assertFalse(bindings.enableForwardButton);
+        assertTrue(bindings.enablePullRefresh);
+        assertEquals("返回", bindings.backLabel);
+        assertEquals("北区试产线回归", bindings.title);
+        assertEquals("归档确认", bindings.subtitle);
+    }
+}