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我想制作一个简单的应用程序,将 100 MP 文件从一台 android 平板电脑传输到另一台平板电脑。两者都有冰淇淋三明治和 USB 主机端口。如何执行此操作?我无法提交简单的代码以将文件从一个选项卡发送到另一个选项卡。