IOException异常：权限被拒绝 [英] IOException: Permission Denied

问题描述

我试图写一个文件到Android的外部存储。
在AndroidManifest.xml中我添加（清单标签内）

I am trying to write a file to the external storage of the android. On the AndroidManifest.xml I've added (within the manifest tag)

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

然后我尝试：

File root = Environment.getExternalStorageDirectory();
File file = new File(root, xmlFilename);
file.createNewFile();

然后，我得到的异常。
我如何可以解决此问题？

And then I get the exception. How may I resolve this?

推荐答案

请确保你的SD卡未安装到您的计算机。如果已启用USB存储，SD卡成为Android的只读。

Make sure your SD card is not mounted to your computer. If you have enabled USB storage, your SD card becomes read-only for Android.

其他然后，您的应用程序看起来很好，应该工作。

Other then that, your application looks fine and should work.

哦，我会修改你的code在下一方式：

Oh, and I would modify your code in a next way:

if(root.canWrite()){
    File file = new File(root, "file.xml");         
    file.createNewFile();
}

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