HomeFragment 文件处理为空判断

[mikite]

fun getArrayIds(startId: String? = null): Array<String>? { val f = pagerAdapter.getItem(mBinding.viewPager.currentItem) /* if (f != null){ require(f is ArticleListFragment) return f.getArrayIds(startId) }else{ return null } */ when (f!= null){ true -> when (f is ArticleListFragment) { true -> return f.getArrayIds(startId) } false -> return null } return null

}