SharedPreferences的一个工具类适合的数据类型包括StringIntegerBooleanFloatLong

Posted 2020-07-31 遗失的流年

package com.jianong.xmtt.util;

import android.content.Context;
import android.content.SharedPreferences;

/**
 * SharedPreferences的一个工具类，调用setParam就能保存String, Integer, Boolean, Float, Long类型的参数
 * 同样调用getParam就能获取到保存在手机里面的数据
 * Created by hgl on 2016/6/24.
 */
public class SharedPreferencesutils {

    private static final String FILE_NAME = "share_date";

    /**
     * 保存数据的方法，我们需要拿到保存数据的具体类型，然后根据类型调用不同的保存方法
     *
       SharedPreferencesUtils.setParam(this, "String", "xiaanming");
     　SharedPreferencesUtils.setParam(this, "int", 10);
    　 SharedPreferencesUtils.setParam(this, "boolean", true);
     　SharedPreferencesUtils.setParam(this, "long", 100L);
     　SharedPreferencesUtils.setParam(this, "float", 1.1f);
     * @param context
     * @param key
     * @param object
     */
    public static void setParam(Context context, String key, Object object) {

        String type = object.getClass().getSimpleName();
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp.edit();

        if ("String".equals(type)) {
            editor.putString(key, (String) object);
        } else if ("Integer".equals(type)) {
            editor.putInt(key, (Integer) object);
        } else if ("Boolean".equals(type)) {
            editor.putBoolean(key, (Boolean) object);
        } else if ("Float".equals(type)) {
            editor.putFloat(key, (Float) object);
        } else if ("Long".equals(type)) {
            editor.putLong(key, (Long) object);
        }

        editor.commit();
    }


    /**
     * 得到保存数据的方法，我们根据默认值得到保存的数据的具体类型，然后调用相对于的方法获取值
     *    SharedPreferencesUtils.getParam(TimerActivity.this, "String", "");
　　　　　　SharedPreferencesUtils.getParam(TimerActivity.this, "int", 0);
          SharedPreferencesUtils.getParam(TimerActivity.this, "boolean", false);
          SharedPreferencesUtils.getParam(TimerActivity.this, "long", 0L);
          SharedPreferencesUtils.getParam(TimerActivity.this, "float", 0.0f);
     * @param context
     * @param key
     * @param defaultObject
     * @return
     */
    public static Object getParam(Context context, String key, Object defaultObject) {
        String type = defaultObject.getClass().getSimpleName();
        SharedPreferences sp = context.getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);

        if ("String".equals(type)) {
            return sp.getString(key, (String) defaultObject);
        } else if ("Integer".equals(type)) {
            return sp.getInt(key, (Integer) defaultObject);
        } else if ("Boolean".equals(type)) {
            return sp.getBoolean(key, (Boolean) defaultObject);
        } else if ("Float".equals(type)) {
            return sp.getFloat(key, (Float) defaultObject);
        } else if ("Long".equals(type)) {
            return sp.getLong(key, (Long) defaultObject);
        }
        return null;
    }
}