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安卓竟变封闭了这么多：越来越像iOS……
source link: http://tech.sina.com.cn/t/2018-03-04/doc-ifwnpcnt8283808.shtml
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来源：PConline作者：Aimo1安卓限制系统降级/App后台运行？在人们的印象中，安卓系统一直是开放、自由的代表。和竞争对手iOS相比，安卓系统不仅仅开源了很大一部分源码，而且系统的使用限制要少得多。你可以在安卓中自由安装App、自由
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