SharedPerference

1、定義前的考慮

1）定義存取方式 get/put

2）明確數據類型 Int/String/Boolean

3)定義刪除功能  單個/全部

2、實現步驟

public class SharedUtil {

    public static final String NAME="config";   //文件名稱
        //存儲 --鍵/值
    public static void putString(Context mContext,String key,String value){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        SharedPreferences.Editor editor=sp.edit();
        editor.putString(key,value).commit();
    }
        //取值 --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);
    }
    public static void putInt(Context mContext,String key,int value){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        SharedPreferences.Editor editor=sp.edit();
        editor.putInt(key,value).commit();
    }
        //---Int
    public static int getInt(Context mContext,String key,int defValue){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        return sp.getInt(key,defValue);
    }

    public static void putBoolean(Context mContext,String key,boolean value){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        SharedPreferences.Editor editor=sp.edit();
        editor.putBoolean(key,value).commit();
    }
        //---Boolean
    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 deleteShared(Context mContext,String key){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        sp.edit().remove(key).commit();
    }
        //刪除  全部
    public static void deleteAll(Context mContext,String key){
        SharedPreferences sp=mContext.getSharedPreferences(NAME,Context.MODE_PRIVATE);
        sp.edit().clear();
    }
}