是android平台的手机游戏开发，纸牌游戏，凭借记忆将成对的纸牌翻转，有不同的难度等级，不同的牌数和时间限制，实现数据的存储实现记录名次-Android platform mobile phone game development, card games, with memory pairs of cards flip, there are different levels of difficulty, the number of cards and time constraints, dat