AssetUtil, a key asset storage service tool class

Introduction and description of harmony-utils

---

harmony-utils A HarmonyOS tool library with rich features and extremely easy to use, with the help of many practical tools, is committed to helping developers quickly build Hongmeng applications. Its encapsulated tools cover APP, device, screen, authorization, notification, inter-thread communication, pop-up frames, toast, biometric authentication, user preferences, taking photos, albums, scanning codes, files, logs, exception capture, characters, strings, numbers, collections, dates, random, base64, encryption, decryption, JSON and other functions, which can meet various development needs.

picker_utils It is a sub-store split by harmony-utils, including PickerUtil, PhotoHelper, and ScanUtil.

Download and install

ohpm i @pura/harmony-utils

ohpm i @pura/picker_utils

  //Global initialization method, initialized in the onCreate method of UIAbility AppUtil.init()
  onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
    AppUtil.init(this.context);
  }

API methods and usage

---

canIUse Whether the current device supports this module

let canIUse = AssetUtil.canIUse();
ToastUtil.showToast(`当前设备是否支持该模块：${canIUse}`);

add a new key asset

AssetUtil.add("key_harmony", "我是异步知产X!").then(() => {
  ToastUtil.showToast(`新增资产成功！`);
});

AssetUtil.addSync("key_harmony_sync", "我是同步知产X!");
ToastUtil.showToast(`新增资产成功！`);

get query key assets

let rStr = await AssetUtil.get("key_harmony");
ToastUtil.showToast(`取值: ${rStr}`);

let sStr = AssetUtil.getSync("key_harmony_sync");
ToastUtil.showToast(`同步：${sStr}`);

remove key assets

AssetUtil.remove("key_harmony").then(() => {
  ToastUtil.showToast("移除成功！");
});

AssetUtil.removeSync("key_harmony_sync");
ToastUtil.showToast("移除成功!");

Full Code Example

---

import { router } from '@kit.ArkUI';
import { DescribeBean } from '../../model/DescribeBean';
import { MockSetup } from '@ohos/hamock';
import { AssetUtil, LogUtil, ToastUtil } from '@pura/harmony-utils';
import { TitleBarView } from '../../component/TitleBarView';

/**
 * 关键资产存储服务工具类
 */
@Entry
@Component
struct Index {
  private scroller: Scroller = new Scroller();
  @State describe: DescribeBean = router.getParams() as DescribeBean;
  @State readonly rkey: string = "key_harmony"
  @State readonly skey: string = "key_harmony_sync"

  @MockSetup
  mock() {
    this.describe = new DescribeBean("AssetUtil", "关键资产存储服务工具类");
  }

  build() {
    Column() {
      TitleBarView({ describe: this.describe })
      Divider()
      Scroll(this.scroller) {
        Column() {
          Button("canIUse")
            .btnStyle()
            .onClick(() => {
              let canIUse = AssetUtil.canIUse();
              ToastUtil.showToast(`当前设备是否支持该模块：${canIUse}`);
            })
          Button("add")
            .btnStyle()
            .onClick(() => {
              AssetUtil.add(this.rkey, "我是异步知产X!").then(() => {
                ToastUtil.showToast(`新增资产成功！`);
              });
            })
          Button("get")
            .btnStyle()
            .onClick(async () => {
              let rStr = await AssetUtil.get(this.rkey);
              ToastUtil.showToast(`取值: ${rStr}`);
              LogUtil.error(`取值: ${rStr}`);
            })
          Button("addSync")
            .btnStyle()
            .onClick(() => {
              AssetUtil.addSync(this.skey, "我是同步知产X!");
              ToastUtil.showToast(`新增资产成功！`);
            })
          Button("getSync")
            .btnStyle()
            .onClick(() => {
              let sStr = AssetUtil.getSync(this.skey);
              ToastUtil.showToast(`同步：${sStr}`);
            })
          Button("remove")
            .btnStyle()
            .onClick(() => {
              AssetUtil.remove(this.rkey).then(() => {
                ToastUtil.showToast("移除成功！");
              });
            })
          Button("removeSync")
            .btnStyle()
            .onClick(() => {
              AssetUtil.removeSync(this.skey);
              ToastUtil.showToast("移除成功!");
            })

          Blank().layoutWeight(1)
        }
        .margin({ top: 5, bottom: 5 })
      }
      .layoutWeight(1)
    }
    .width('100%')
    .height('100%')
    .justifyContent(FlexAlign.Start)
    .backgroundColor($r('app.color.main_background'))
  }
}

@Styles
function btnStyle() {
  .width('90%')
  .margin({ top: 10, bottom: 5 })
}