升级到DevEco Studio5.0后4.0的代码提示出错

Question

下面代码在DevEco Studio4.0运行正常，升级到DevEco Studio5.0后
:Array<{处提示：“Object literals cannot be used as type declarations (arkts-no-obj-literals-as-types) ”
{title:'首页'}等提示：“Array literals must contain elements of only inferrable types (arkts-no-noninferrable-arr-literals) ”
没有找到升级帮助文档。

private items:Array<{title:string,iconSelected:Resource,iconNormal:Resource}> =[
    {title:'首页',iconSelected:$r('app.media.ic_home_selected'),iconNormal:$r('app.media.ic_home_normal')},
    {title:'精选',iconSelected:$r('app.media.ic_discover_selected'),iconNormal:$r('app.media.ic_discover_normal')},
    {title:'收藏',iconSelected:$r('app.media.ic_sub_selected'),iconNormal:$r('app.media.ic_sub_normal')},
    {title:'购物车',iconSelected:$r('app.media.ic_shopping_selected'),iconNormal:$r('app.media.ic_shopping_normal')},
    {title:'我的',iconSelected:$r('app.media.ic_mine_selected'),iconNormal:$r('app.media.ic_mine_normal')},
  ]

Answer 1

找到解决方式了，Array<>需要定义接口interface：

interface EndNavInterface { title: string;iconSelected: Resource;iconNormal: Resource; }

然后

private items:Array<{title:string,iconSelected:Resource,iconNormal:Resource}> =[
    {title:'首页',iconSelected:$r('app.media.ic_home_selected'),iconNormal:$r('app.media.ic_home_normal')},
    {title:'精选',iconSelected:$r('app.media.ic_discover_selected'),iconNormal:$r('app.media.ic_discover_normal')},
    {title:'收藏',iconSelected:$r('app.media.ic_sub_selected'),iconNormal:$r('app.media.ic_sub_normal')},
    {title:'购物车',iconSelected:$r('app.media.ic_shopping_selected'),iconNormal:$r('app.media.ic_shopping_normal')},
    {title:'我的',iconSelected:$r('app.media.ic_mine_selected'),iconNormal:$r('app.media.ic_mine_normal')},
  ]

改为：

private items:Array<EndNavInterface> =[
    {title:'首页',iconSelected:$r('app.media.ic_home_selected'),iconNormal:$r('app.media.ic_home_normal')},
    {title:'精选',iconSelected:$r('app.media.ic_discover_selected'),iconNormal:$r('app.media.ic_discover_normal')},
    {title:'收藏',iconSelected:$r('app.media.ic_sub_selected'),iconNormal:$r('app.media.ic_sub_normal')},
    {title:'购物车',iconSelected:$r('app.media.ic_shopping_selected'),iconNormal:$r('app.media.ic_shopping_normal')},
    {title:'我的',iconSelected:$r('app.media.ic_mine_selected'),iconNormal:$r('app.media.ic_mine_normal')},
  ]