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有没有办法以编程方式列出设备上的所有可用内容提供商？没有真正的用例,我只是觉得看到我在手机上安装了哪些已经暴露内容提供商的应用程序可能很简洁.

下面是记事本示例代码,为什么android:authorities = com.google.provider.NotePad不使用项目包名？究竟是什么android:authorities要求？

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