通过删除重新加载状态并仅使用加载状态来简化 ViewState

Question

我不想在使用 SwipeRefreshLayout 刷新时隐藏 RecyclerView。结果，我在我的 ViewState class 中引入了 Reloading 状态：

sealed class Resource<out T> {
    class Loading<out T> : Resource<T>()
    class Reloading<out T> : Resource<T>()
    data class Success<out T>(val data: T?) : Resource<T>()
    data class Failure<out T>(val cause: String?) : Resource<T>()
}

这是我的绑定适配器：

    @JvmStatic
    @BindingAdapter("refreshing")
    fun setSwipeRefreshLayout(view: SwipeRefreshLayout, resource: Resource<*>?) {
        view.isRefreshing = resource is Resource.Loading || resource is Resource.Reloading
        view.isEnabled = resource !is Resource.Failure
    }

    @JvmStatic
    @BindingAdapter("showError")
    fun showError(view: View, resource: Resource<*>?) {
        view.visibility = if (resource is Resource.Failure) View.VISIBLE else View.GONE
    }

    @JvmStatic
    @BindingAdapter("showData")
    fun showData(view: RecyclerView, resource: Resource<*>?) {
        view.visibility = if (resource is Resource.Reloading || resource is Resource.Success)
            View.VISIBLE else View.GONE

    }

是否有任何解决方案可以简化 ViewState classes 并删除 Reloading 状态（仅使用 Loading 状态）？源代码可以在这里找到：https://github.com/AliRezaeiii/SavingGoals-Cache

Answer 1

截断Reloading state并向Loading state添加布尔指示器的最简单方法：

sealed class Resource<out T> {
    data class Loading<out T>(val isRefreshing: Boolean) : Resource<T>()
    data class Success<out T>(val data: T?) : Resource<T>()
    data class Failure<out T>(val cause: String?) : Resource<T>()
}

通过删除重新加载状态并仅使用加载状态来简化 ViewState

Simplify ViewState by removing Reloading state and just using Loading state

android

android-binding-adapter