andoird SharedPreferences 操作

public class PreferencesService {
private Context context;

public PreferencesService(Context context) {
this.context = context;
}
/**
* 保存参数
* @param name 姓名
* @param age 年龄
*/
public void save(String name, Integer age) {
SharedPreferences preferences = context.getSharedPreferences("itcast", Context.MODE_PRIVATE);
Editor editor = preferences.edit();
editor.putString("name", name);
editor.putInt("age", age);
editor.commit();
}
/**
* 获取各项配置参数
* @return
*/
public Map<String, String> getPreferences(){
Map<String, String> params = new HashMap<String, String>();
SharedPreferences preferences = context.getSharedPreferences("itcast", Context.MODE_PRIVATE);
params.put("name", preferences.getString("name", ""));
params.put("age", String.valueOf(preferences.getInt("age", 0)));
return params;
}
}