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<!DOCTYPE html>
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[toc]
Android 常用加密算法数字签名：
简单来说就是提供可鉴别的数字信息验证自身身份的一种方式。一套数字签名通常定义两种互补的运算，一个用于签名，另一个用于验证。分别又发送者持有能够代表自己身份的私钥（不可泄漏），由接受者持有与
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Android 目录内部存储内部存储位于系统中很特殊的一个位置，对于设备中每一个安装的 App，系统都会在 data/data/packagename/xxx或者data/user/0/packagename/xxx 自动创建与
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<a class="post-title-link" href="/2020/02/07/其他面试题汇总/" itemprop="url">其他面试题汇总</a></h1>
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其他总结数据库相关面试题
左链接和右链接的区别 左连接where只影向右表，右连接where只影响左表。
select * from tbl1 Left Join tbl2 where tbl1.ID = tbl2.ID 左连接后
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关于滑动冲突踩的那些坑以及解决办法这次博客讲的内容比较多，因为学习自定义View时踩的坑比较多，自定义View同时也自定义了ViewGroup，并踩了滑动冲突，所以一次性简单的说一下自定义，当然重点在冲突解决。
先给出Demo地址，
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