fix(App): 修复 backgroundColor、navigationBarBackgroundColor 设置为不支持的值时 iOS 设备显示为透明的问题

src/platforms/app-plus/service/framework/webview/parser/title-nview-parser.js

@@ -54,12 +54,13 @@ export function parseTitleNView (routeOptions) {
     always: 'float'
   }
 
+  const navigationBarBackgroundColor = windowOptions.navigationBarBackgroundColor
   const ret = {
     autoBackButton: !routeOptions.meta.isQuit,
     titleText: titleImage === '' ? windowOptions.navigationBarTitleText || '' : '',
     titleColor: windowOptions.navigationBarTextStyle === 'black' ? '#000000' : '#ffffff',
     type: titleNViewTypeList[transparentTitle],
-    backgroundColor: windowOptions.navigationBarBackgroundColor || '#f8f8f8',
+    backgroundColor: (/^#[a-z0-9]{6}$/i.test(navigationBarBackgroundColor) || navigationBarBackgroundColor === 'transparent') ? navigationBarBackgroundColor : '#f7f7f7',
     tags: titleImage === '' ? [] : [{
       tag: 'img',
       src: titleImage,

src/platforms/app-plus/service/framework/webview/parser/webview-style-parser.js

@@ -45,7 +45,7 @@ export function parseWebviewStyle (id, path, routeOptions = {}) {
   })
 
   const backgroundColor = routeOptions.window.backgroundColor
-  if (backgroundColor) {
+  if (/^#[a-z0-9]{6}$/i.test(backgroundColor) || backgroundColor === 'transparent') {
     if (!webviewStyle.background) {
       webviewStyle.background = backgroundColor
     }