工具類的封裝--SharedPreferences封裝

原創

为光

2018-08-27 07:51

工具類的封裝–SharedPreferences封裝

1.創建工具類ShareUtils.java

代碼示例：

package com.example.renchunlin.demo.utils;

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

/**
 * 項目名：   Demo
 * 包名：     com.example.renchunlin.demo.utils
 * 文件名：   ShareUtils
 * 創建者：   RCL
 * 創建時間： 2017/4/26 14:17
 * 描述：     ShareUtils
 */
public class ShareUtils {
    public static final String NAME="config";

    //鍵 值
    public static void putString(Context mContext,String key,String value){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        sp.edit().putString(key, value).commit();
    }

    //鍵 默認值
    public static String getString(Context mContext,String key,String defValue){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        return sp.getString(key,defValue);
    }

    //鍵 值
    public static void putInt(Context mContext,String key,int value){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        sp.edit().putInt(key, value).commit();
    }

    //鍵 默認值
    public static int getInt(Context mContext,String key,int defValue){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        return sp.getInt(key,defValue);
    }

    //鍵 值
    public static void putBoolean(Context mContext,String key,boolean value){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        sp.edit().putBoolean(key, value).commit();
    }

    //鍵 默認值
    public static boolean getBoolean(Context mContext,String key,boolean defValue){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        return sp.getBoolean(key,defValue);
    }

    //刪除 單個
    public static void deleShare(Context mContext,String key){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        sp.edit().remove(key).commit();
    }

    //刪除 全部
    public static void deleAll(Context mContext){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        sp.edit().clear().commit();
    }
}

2.在MainActivity.java中使用：

package com.example.renchunlin.demo;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.Toast;

import com.example.renchunlin.demo.utils.L;
import com.example.renchunlin.demo.utils.ShareUtils;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

/*        L.d("Test");
        L.i("Test");
        L.w("Test");
        L.e("Test");*/

        ShareUtils.putString(this,"username","張三");
        ShareUtils.putBoolean(this,"boy",true);
        ShareUtils.putInt(this,"age",21);

        String name=ShareUtils.getString(this,"username","李四");
        boolean sex=ShareUtils.getBoolean(this,"boy",false);
        int age=ShareUtils.getInt(this,"age",12);

        Toast.makeText(this,"年齡:"+age,Toast.LENGTH_SHORT).show();

        if(sex==true){
            Toast.makeText(this,"性別:男",Toast.LENGTH_SHORT).show();
        }else {
            Toast.makeText(this,"性別:女",Toast.LENGTH_SHORT).show();
        }

        Toast.makeText(this,"姓名:"+name,Toast.LENGTH_SHORT).show();
    }
}