#鸿蒙学习大百科#Stage模型下如何获取首选项实例？

import ohos.data.preferences.Preferences;
import ohos.data.preferences.PreferencesHelper;
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import ohos.aafwk.ability.delegation.AbilityDelegatorRegistry;
import ohos.app.Context;
import ohos.data.preferences.Preferences;
import ohos.data.preferences.PreferencesHelper;

public class PreferencesExample {

    public static Preferences getPreferencesInstance(String fileName) {
        // 获取当前应用的Context
        Context context = AbilityDelegatorRegistry.getAbilityDelegator().getAppContext();
        
        // 创建Preferences实例，fileName是偏好文件的名称
        Preferences preferences = PreferencesHelper.getPreferences(context, fileName);
        
        return preferences;
    }
    
    public static void main(String[] args) {
        // 示例调用
        Preferences preferences = getPreferencesInstance("my_preferences");

        // 使用Preferences进行存储或读取操作
        preferences.putString("exampleKey", "exampleValue");
        preferences.flushSync();
        
        String value = preferences.getString("exampleKey", "default");
        System.out.println("Retrieved value: " + value);
    }
}
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import UIAbility from '@ohos.app.ability.UIAbility';
import { BusinessError } from '@ohos.base';
import window from '@ohos.window';
import dataPreferences from '@ohos.data.preferences';

onWindowStageCreate(windowStage: window.WindowStage): void {
  let options: dataPreferences.Options = { name: 'myStore' };
 let  preferences = dataPreferences.getPreferencesSync(this.context, options)
 }
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