添加scheme 调用

app/src/main/ets/pages/Index.ets

@@ -7,6 +7,7 @@ import { BusinessError } from '@ohos.base';
 import { Log } from '@devwiki/base';
 import { BaseLocalStorage, ScreenUtil } from '@devwiki/base';
 import { HomeItem, HomeItemGroup } from '../model/Home';
+import { common, Want } from '@kit.AbilityKit';
 
 
 @Entry
@@ -43,6 +44,13 @@ struct Index {
       items: [
         { name: 'AVPlayer', page: 'pages/media/AVPlayerPage' },
       ]
+    },
+    //系统能力
+    {
+      name: 'System',
+      items: [
+        {name: "Scheme", page: 'pages/system/SchemePage'}
+      ]
     }
   ];
 

app/src/main/ets/pages/system/SchemePage.ets

@@ -0,0 +1,19 @@
+import { common, Want } from '@kit.AbilityKit';
+
+@Component
+@Entry
+export struct SchemePage {
+
+
+
+  build() {
+  }
+
+  openHttp() {
+    let context = getContext(this) as common.UIAbilityContext;
+    let wantInfo: Want = {
+      uri: 'https://devwiki.net'
+    }
+    context.startAbility(wantInfo);
+  }
+}

app/src/main/ets/pages/web/WebPage.ets

@@ -18,6 +18,14 @@ export struct WebPage {
   onTitleBarRightClick(event: ClickEvent) {
     this.webViewController?.refresh();
   }
+  
+  onBackPress(): boolean | void {
+    if (this.webViewController?.accessBackward()) {
+      this.webViewController?.backward();
+      return false;
+    }
+    return true;
+  }
 
   build() {
     Column() {