正如问题所述,我想导航到另一个没有NavigationButton的视图,例如UIkit中的“ pushView”和“ popView”
答案 0 :(得分:2)
SwiftUI的PresentationButton用于以模态形式在现有视图控制器上呈现新的视图控制器,例如在 UIViewController
上调用 present()注意 PresentationButton 已在 Xcode 11.0 beta版中重命名为 PresentationLink 3
例如,如果您具有下一个这样的视图:
@Bean
public JavaMailSenderImpl mailSenderService(ClassImpl ci) {
....
然后您可以这样显示它:
struct NextView: View {
var body: some View {
Text("NextView")
}
}
除非有导航按钮,否则演示文稿按钮不需要导航视图。
参考目的我从here那里得到了答案
答案 1 :(得分:1)
我认为这更像是一种限制的解决方法,但它对我有用:
添加一个布尔状态变量,该变量定义链接是否处于活动状态。例如:
class AllCategoryAdapter(val categoryList : List<AllCategoryBean>) : RecyclerView.Adapter<RecyclerView.ViewHolder>()
{
private val TYPE_HEADER : Int = 0
private val TYPE_LIST : Int = 1
override fun getItemViewType(position: Int): Int {
if(position == 0)
{
return TYPE_HEADER
}
return TYPE_LIST
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
if(viewType == TYPE_HEADER)
{
val header = LayoutInflater.from(parent.context).inflate(R.layout.cv_all_category_header,parent,false)
return ViewHolderHeader(header)
}
val header = LayoutInflater.from(parent.context).inflate(R.layout.cv_all_category,parent,false)
return ViewHolder(header)
}
override fun getItemCount(): Int {
return categoryList.size + 1
}
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
val listItem : AllCategoryBean = categoryList[position]
if(holder is ViewHolderHeader)
{
holder.tvCategoyName.setText("All Category")
}
if(holder is ViewHolder)
{
holder.tvCategoyName.setText(listItem.getCategoryName())
}
}
class ViewHolder(itemView : View) : RecyclerView.ViewHolder(itemView)
{
val tvCategoyName = itemView.findViewById(R.id.tvCategoyName) as TextView
}
class ViewHolderHeader(itemView : View) : RecyclerView.ViewHolder(itemView)
{
val tvCategoyName = itemView.findViewById(R.id.tvCategoyName) as TextView
}
}
添加一个不可见的NavigationLink,如下所示:
@State private var showLinkTarget = false