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介绍

支持下拉刷新和加载更多

导入依赖

import { PkList } from '@peakmain/library/Index'

参数

示例

import { NavBar, PkList } from '@peakmain/library/Index'

@Entry
@Component
struct ListPage{
  @State
  arr: String[] = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10']
  @State
  page: number = 1 // 第几页
  pageSize: number = 2 //共几页

  async getNewData(isRefresh:boolean){
    console.log("执行了getNewData..." + isRefresh)
    const tmp = await this.getData(isRefresh)
    if (isRefresh) {
      this.arr = tmp
    } else {
      this.arr.push(...tmp)
    }
  }

  getData(isRefresh:boolean){
    console.log("执行了getData..." + isRefresh)
    return new Promise<String[]>((resolve) => {
      let tmp: String[]
      setTimeout(() => {
        if (!isRefresh) {
          this.page++
          tmp = ['new_0', 'new_1', 'new_2', 'new_3', 'new_4', 'new_5']
        } else {
          this.page = 1
          tmp = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10']
        }
        console.log("当前页数：" + this.page)
        resolve(tmp); // 执行完成后调用 resolve
      }, 2000);
    });
  }

  @Builder
  renderItem(item: object){
    Column(){
      Text('' + item)
        .width('100%')
        .height(100)
        .fontSize(16)
        .textAlign(TextAlign.Center)
        .borderRadius(10)
        .backgroundColor(Color.White)
    }
    .
    margin({
      bottom: 10,
      left: 10, right: 10
    })
      .border({
        width: 0.5,
        color: Color.Red
      })
      .borderRadius(20)
  }

  build(){
    Column()
    {
      NavBar({
        title: "下拉刷新与加载更多"
      })
      PkList({
        dataSource: this.arr,
        finished: this.page >= this.pageSize,
        onRefresh: async () => {
          await this.getNewData(true)
        },
        renderItem: (item) => {
          this.renderItem(item)
        },
        onLoad: async () => {
          await this.getNewData(false)
        }
      }).margin({
        bottom: 20
      })
    }
  }
}