#鸿蒙通关秘籍#如何在应用中持久化存储异常信息数据？

PreferencesManager.putFaultMessage(faultMessage) {
  dataPreferencesManager.put('faultMessage', JSON.stringify(faultMessage), (err) => {
    if (!err) {
      dataPreferencesManager.flush();
    }
  });
}

PreferencesManager.getFaultMessage(faultDataSource) {
  let promise = dataPreferencesManager.get('faultMessage', []);
  promise.then((data) => {
    if (typeof data === 'string') {
      let faultData = JSON.parse(data);
      faultData.forEach((item) => {
        faultDataSource.pushData(item);
      });
      AppStorage.setOrCreate('faultDataSourceLength', faultDataSource.totalCount());
    }
  });
}
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