fix: 问题调试

app/web/page/activity/view/activity/index.ts

@@ -78,7 +78,12 @@ export default class Activity extends Mixins(TransformStyleMixin, SaMixin) {
   mounted() {
     this.targetEle = document.querySelector('body');
     this.showBackTop = true;
-    isApp && setAppTitleColor(this.pageData.props.titleBgColor);
+    this.pageVisibilityChange();
+    if (isApp) {
+      this.$nextTick(() => {
+        setAppTitleColor(this.pageData.props.titleBgColor);
+      });
+    }
   }
   fetchApi(options) {
     const { store, route } = options;
@@ -121,7 +126,28 @@ export default class Activity extends Mixins(TransformStyleMixin, SaMixin) {
   hideBottomBtns(state) {
     this.showBackTop = state;
   }
-
+  pageVisibilityChange() {
+    if (EASY_ENV_IS_NODE) return;
+    let hidden = 'hidden';
+    let visibilityChange = 'visibilitychange';
+    if (typeof document.hidden !== 'undefined') {
+      hidden = 'hidden';
+      visibilityChange = 'visibilitychange';
+    } else if (typeof document.webkitHidden !== 'undefined') {
+      hidden = 'webkitHidden';
+      visibilityChange = 'webkitvisibilitychange';
+    }
+    window.addEventListener(visibilityChange, () => {
+      this.handleChange(document[hidden]);
+    }, false);
+  }
+  handleChange(state) {
+    if (!state) {
+      if (isApp) {
+        setAppTitleColor(this.pageData.props.titleBgColor);
+      }
+    }
+  }
   modfiTabsStyle() {
     const tabsEle = document.querySelector('.tabs');
     // console.log('tabsEle', tabsEle);