feat：优化早晚主色取值

@@ -249,8 +249,7 @@ export struct MorningEveningPaperComponent {
     // 图片转换为PixelMap对象
     // const pixelMap: image.PixelMap = await image2PixelMap(item.icon);
     // console.log(TAG, "compInfoBean compStyle = " + imageUrl)
-    
-    if (this.pageInfoBean.backgroundColor.length > 0){
+    if (this.pageInfoBean.backgroundColor.length > 0 && this.pageInfoBean.topicInfo?.frontLinkObject != undefined){
       let colorDatas = ColorUtils.hexColorValueToRGB(this.pageInfoBean.backgroundColor)
       let color = ColorUtils.getMorningEveningPaperRgb({red:colorDatas[0],green:colorDatas[1],blue:colorDatas[2],alpha:1})
       this.mixedBgColor = "#ff" + color.red.toString(16).padStart(2,'0') + color.green.toString(16).padStart(2,'0') + color.blue.toString(16).padStart(2,'0');
@@ -258,6 +257,7 @@ export struct MorningEveningPaperComponent {
     }
 
     if (imageUrl.length > 0 && this.pageInfoBean.topicInfo.frontFlag === 1) {
+
       const imageSource: image.ImageSource | undefined = await getPicture(imageUrl)
       this.pickColor(imageSource)
     } else {