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Comments (3)

KevinnZou avatar KevinnZou commented on June 2, 2024

你好,我有点不太确定我有没有明白你的意思,你是指你的loadData函数也就是getAreaDevices需要除了page以外的参数该怎么传递吗?这样的话直接在viewmodel中维护一个变量就行了,loaddata中直接使用即可, 简单例子如下:

class viewModel() : ViewModel() {

    var param1 = "hhhh"
    
    val pager = easyPager {
        return@easyPager brandIndexService.getBrandIndex(
            param1,
            it
        )
    }
}

如果不是这个意思麻烦你描述的稍微再详细一点,谢谢!

from compose-paginglist.

nongjuanfeng avatar nongjuanfeng commented on June 2, 2024

你好,我有点不太确定我有没有明白你的意思,你是指你的loadData函数也就是getAreaDevices需要除了page以外的参数该怎么传递吗?这样的话直接在viewmodel中维护一个变量就行了,loaddata中直接使用即可, 简单例子如下:

class viewModel() : ViewModel() {

    var param1 = "hhhh"
    
    val pager = easyPager {
        return@easyPager brandIndexService.getBrandIndex(
            param1,
            it
        )
    }
}

如果不是这个意思麻烦你描述的稍微再详细一点,谢谢!

没错!
我现在就是这样,在函数外面维护一个变量。
但是这样有时会出现问题,例如,这个 loadData 同时有 3 个地方调用,这时这个外部的变量就可能因为并发问题,导致读取的时候出现不确定性。

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KevinnZou avatar KevinnZou commented on June 2, 2024

你这个情况确实我确实没考虑到,因为一般一个分页列表的loaddata方法只会服务于该分页列表,触发时机由PagingSource控制。官方的Paging使用指南中也是单独调用的,多处调用的场景是什么?考虑抽离一个单独的loaddata方法仅服务于分页列表?如果实在存在同时调用的并发情况,可能只能考虑采用并发安全的类型来处理变量。

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