#鸿蒙学习大百科#如何删除preference实例对应的文件？

import dataPreferences from '@ohos.data.preferences';
import { BusinessError } from '@kit.BasicServicesKit';

@Entry
@Component
struct Index {
  build() {
    Column() {
      Button("删除首选项文件").onClick(() => {
        let preferences = dataPreferences.getPreferencesSync(getContext(), { name: "myStore" });
        dataPreferences.deletePreferences(getContext(), "myStore", (err: BusinessError) => {
          if (err) {
            console.error(`Failed to delete preferences. Code:${err.code}, message:${err.message}`);
            return;
          }
          console.info('Succeeded in deleting preferences.');
        })
      })
    }
    .width('100%')
    .height('100%')
    .justifyContent(FlexAlign.Center)
  }
}