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

C2F degrees Celsius to Fahrenheit

let f = TempUtil.C2F(27.5);
ToastUtil.showToast(`转换后的华氏度：${f}`);

F2C Fahrenheit to Celsius

let c = TempUtil.F2C(81.5)
ToastUtil.showToast(`转换后的摄氏度：${c}`);

C2K degrees Celsius to Kelvin

let k = TempUtil.C2K(25);
ToastUtil.showToast(`转换后的开尔文：${k}`);

Kelvin to Celsius

let c = TempUtil.K2C(298.15);
ToastUtil.showToast(`转换后的摄氏度：${c}`);

F2K Fahrenheit to Kelvin

let k = TempUtil.F2K(77);
ToastUtil.showToast(`转换后的开尔文：${k}`);

K2F Kelvin to Fahrenheit

let f = TempUtil.K2F(298.15);
ToastUtil.showToast(`转换后的华氏度：${f}`);