Android Q:java.io.FileNotFoundException:/proc/self/net/dev:打开失败:EACCES(权限被拒绝)

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问题描述

我要打开文件"/proc/self/net/dev"与FileReader.在Android 10中，出现了java.io.FileNotFoundException:/proc/self/net/dev:打开失败:EACCES(权限被拒绝)在旧版本中，打开该文件没有问题.我该怎么办?

I want to open the file "/proc/self/net/dev"with a FileReader. In the Android 10 there comes a java.io.FileNotFoundException: /proc/self/net/dev: open failed: EACCES (Permission denied)In older versions it's no problem to open this file.What can I do?

推荐答案

根据Android开发者文档，他们对Android Q作用域存储进行了更改.如果您的应用针对的是Android Q，则应在清单文件中定义android:requestLegacyExternalStorage ="true"

As per Android developer document, they have make change for Android Q scope storage. If your app is targeting Android Q, you should define android:requestLegacyExternalStorage="true" in manifest file

<manifest ... >
  <!-- This attribute is "false" by default on apps targeting Android Q. -->
  <application android:requestLegacyExternalStorage="true" ... >
    ...
  </application>
</manifest>

引荐链接: https://developer.android.com/preview/privacy/scoped -存储

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