倒计时

src/core/ctrls/PageCtrl.tsx

@@ -16,15 +16,18 @@ export class PageCtrl extends Component<{}, PageCtrlState> {
 
   static changePage: (Component: ComponentType<any>, props?: any) => void = null;
   static backPage: () => void = null;
+  static replacePage: (Component: ComponentType<any>, props?: any) => void = null;
 
   componentDidMount() {
     PageCtrl.changePage = this.changePage;
     PageCtrl.backPage = this.backPage;
+    PageCtrl.replacePage = this.replacePage;
   }
 
   componentWillUnmount() {
+    PageCtrl.changePage = null;
     PageCtrl.backPage = null;
-    PageCtrl.backPage = null;
+    PageCtrl.replacePage = null;
   }
 
   changePage = (Component: ComponentType<any>, props: any = {}) => {
@@ -41,6 +44,16 @@ export class PageCtrl extends Component<{}, PageCtrlState> {
     }
   };
 
+  replacePage = (Component: ComponentType<any>, props: any = {}) => {
+    const pages = this.state.pages;
+    if (pages.length > 0) {
+      pages[pages.length - 1] = { Component, props };
+      this.setState({ pages });
+    } else {
+      this.changePage(Component, props);
+    }
+  }
+
   render() {
     const { pages } = this.state;
     if (!pages.length) return null;