fix |> 17457 无网络时进入协议节目鸿蒙与安卓显示不一致

 import { CommonConstants } from 'wdConstant';
 import { Logger } from 'wdKit';
+import { router } from '@kit.ArkUI';
 
 const TAG = 'EmptyComponent';
 
@@ -19,11 +20,15 @@ export const enum WDViewDefaultType {
 @Preview
 @Component
 export struct EmptyComponent {
+  // private emptySize: SizeOptions = {};
   @State emptyWidth: string | number = CommonConstants.FULL_PARENT;
   @State emptyHeight: string | number = CommonConstants.FULL_PARENT;
-  @State emptyType: number = WDViewDefaultType.WDViewDefaultType_NoNetwork; // 缺省图类型，传枚举
+  @State emptyType: number = WDViewDefaultType.WDViewDefaultType_Default; // 缺省图类型，传枚举
   @State emptyButton: boolean = false
+  @State isBlack: boolean = false // 背景是否为黑色 默认白色
   @State timeNum: number = 10
+  ///占位图上是否显示返回按钮
+  @State showBackButton: boolean = true
   /**
    * The empty image width percentage setting.
    */
@@ -39,13 +44,27 @@ export struct EmptyComponent {
   /**
    * The empty data text opacity.
    */
-  readonly TEXT_OPACITY: number = 0.4;
-  private timer: number = -1
+  readonly TEXT_OPACITY: number = 1.0;
   retry: () => void = () => {
   }
 
   build() {
+    Stack({alignContent:Alignment.Bottom}) {
       this.noProgrammeData();
+
+      if (this.showBackButton) {
+        Image($r("app.media.icon_arrow_left_white"))
+          .width(24)
+          .height(24)
+          .onClick(() => {
+            router.back();
+          })
+          .position({
+            bottom: 15,
+            left: 16
+          })
+      }
+    }
   }
 
   /**
@@ -64,17 +83,18 @@ export struct EmptyComponent {
         .fontWeight(FontWeight.Normal)
         .opacity(this.TEXT_OPACITY)
         .margin({ top: this.EMPTY_TIP_TEXT_MARGIN_TOP })
+        .fontColor('#666666')
         .onClick((event: ClickEvent) => {
           Logger.info(TAG, `noProgrammeData onClick event?.source: ${event.source}`);
         })
 
       if (this.isShowButton()) {
-        if (this.emptyType !== 15) {
+        if (this.emptyType !== 15 && !this.isBlack) {
           Button('点击重试')
             .type(ButtonType.Normal)
             .width(80)
             .height(28)
-            .backgroundColor('#fffffff')
+            .backgroundColor(Color.White)
             .fontColor('#FF666666')
             .border({ width: 1 })
             .borderColor('#FFEDEDED')
@@ -106,7 +126,9 @@ export struct EmptyComponent {
     }
     .justifyContent(FlexAlign.Center)
     .width(this.emptyWidth)
+    .layoutWeight(1)
     .height(this.emptyHeight)
+
   }
 
   buildNoDataTip(): string {
@@ -120,7 +142,7 @@ export struct EmptyComponent {
 
   buildNoDataTipImage(): Resource | string {
     Logger.info(TAG, "buildNoDataTip");
-    let imageString: Resource | string = ""
+    let imageString: Resource | string = $r('app.media.icon_no_net1')
     if (this.emptyType === WDViewDefaultType.WDViewDefaultType_NoNetwork) {
       imageString = $r('app.media.icon_no_net1')
     }
@@ -128,7 +150,7 @@ export struct EmptyComponent {
   }
 
   isShowButton() {
-    if (this.emptyType === 1 || this.emptyType === 9 || this.emptyType === 15) {
+    if (this.emptyType === 1 || this.emptyType === 9 || this.emptyType === 15 && this.emptyButton) {
       return true
     } else {
       return false