@Entry@Componentstruct QuickTestMainPage {     @Provide scaleTextStyle: number = 1; // 当前字体大小样式}

import { StyleFit } from './utils/StyleFit';
@Entry@Componentstruct QuickTestMainPage {    @Provide scaleTextStyle: number = 1; // 当前字体大小样式    aboutToAppear() {         this.scaleTextStyle = StyleFit.getScaleTextStyle();  }}

export type ScaleTextSizeType = 'base' | 'mini' | 'large';export class StyleFit {  private static scaleTextSize: ScaleTextSizeType = 'base'; // base标准 mini小字体 large大字体
  static init() {     PreferencesUtil.getString("scale_text_size").then(value => {      if (value == "") {        StyleFit.scaleTextSize = "base";      } else {        StyleFit.scaleTextSize = value as ScaleTextSizeType;      }    })  }   static setScaleTextSize(value: ScaleTextSizeType) {    StyleFit.scaleTextSize = value;    PreferencesUtil.putSync("scale_text_size", value);  }
 // 获取当前字体大小样式  static getScaleTextStyle() {    let style = 1;    if (StyleFit.scaleTextSize == "mini") {      style = 0.8;    } else if (StyleFit.scaleTextSize == "base") {      style = 1;    } else if (StyleFit.scaleTextSize == "large") {      style = 1.25;    }    return style;  }}

@Componentexport default struct SingleSelectComponent {   @Consume scaleTextStyle: number;    build() {  Text(`aaaaaaaaa`)            .fontSize(15 * this.scaleTextStyle)            .fontWeight(FontWeight.Bold)                }}