SharePreUtil.java

package com.arialyy.frame.util;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.text.TextUtils;

import com.google.gson.Gson;

/**
 * 配置文件工具类
 *
 * @author Administrator
 */
public class SharePreUtil {

    /**
     * 删除键值对
     */
    public static void removeKey(String preName, Context context, String key) {
        SharedPreferences pre    = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        Editor            editor = pre.edit();
        editor.remove(key);
        editor.commit();
    }

    /**
     * 从配置文件读取字符串
     *
     * @param preName 配置文件名
     * @param context
     * @param key     字符串键值
     * @return 键值对应的字符串, 默认返回""
     */
    public static String getString(String preName, Context context, String key) {
        SharedPreferences pre = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        return pre.getString(key, "");
    }

    /**
     * 从配置文件读取int数据
     *
     * @param preName 配置文件名
     * @param context
     * @param key     int的键值
     * @return 键值对应的int, 默认返回-1
     */
    public static int getInt(String preName, Context context, String key) {
        SharedPreferences pre = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        return pre.getInt(key, -1);
    }

    /**
     * 从配置文件读取Boolean值
     *
     * @return 如果没有，默认返回false
     */
    public static Boolean getBoolean(String preName, Context context, String key) {
        SharedPreferences pre = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        return pre.getBoolean(key, false);
    }

    /**
     * 从配置文件获取float数据
     *
     * @return 默认返回0.0f
     */
    public static float getFloat(String preName, Context context, String key) {
        SharedPreferences pre = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        return pre.getFloat(key, 0.0f);
    }

    /**
     * 从配置文件获取对象
     */
    public static <T> T getObject(String preName, Context context, String key, Class<T> clazz) {
        SharedPreferences pre = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        String            str = pre.getString(key, "");
        return TextUtils.isEmpty(str) ? null : new Gson().fromJson(str, clazz);
    }

    /**
     * 存储字符串到配置文件
     *
     * @param preName 配置文件名
     * @param context
     * @param key     存储的键值
     * @param value   需要存储的字符串
     * @return 成功标志
     */
    public static Boolean putString(String preName, Context context, String key, String value) {
        SharedPreferences pre    = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        Editor            editor = pre.edit();
        editor.putString(key, value);
        return editor.commit();
    }

    /**
     * 保存Float数据到配置文件
     */
    public static Boolean putFloat(String preName, Context context, String key, float value) {
        SharedPreferences pre    = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        Editor            editor = pre.edit();
        editor.putFloat(key, value);
        return editor.commit();
    }

    /**
     * 存储数字到配置文件
     *
     * @param preName 配置文件名
     * @param context
     * @param key     存储的键值
     * @param value   需要存储的数字
     * @return 成功标志
     */
    public static Boolean putInt(String preName, Context context, String key, int value) {
        SharedPreferences pre    = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        Editor            editor = pre.edit();
        editor.putInt(key, value);
        return editor.commit();
    }

    /**
     * 存储Boolean值到配置文件
     *
     * @param preName 配置文件名
     * @param context
     * @param key     键值
     * @param value   需要存储的boolean值
     * @return
     */
    public static Boolean putBoolean(String preName, Context context, String key, Boolean value) {
        SharedPreferences pre    = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        Editor            editor = pre.edit();
        editor.putBoolean(key, value);
        return editor.commit();
    }

    /**
     * 存放对象
     */
    public static Boolean putObject(String preName, Context context, String key, Class<?> clazz, Object obj) {
        String            str    = new Gson().toJson(obj, clazz);
        SharedPreferences pre    = context.getSharedPreferences(preName, Context.MODE_PRIVATE);
        Editor            editor = pre.edit();
        editor.putString(key, str);
        return editor.commit();
    }


}