Android emulator sdcard permisisons not working

Question

I've read many posts about this but nothing seems to solve the problem.

I've created a simple app that basically consists of:

    Log.d("RSE", Environment.getExternalStorageState());
    Log.d("RSE", "Readable? " + Environment.getExternalStoragePublicDirectory("Movies").canRead());

It always says mounted and Readable? false Readable? false

When I try to do anything more, I get a permission denied error.

I've added

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

inside AndroidManifest.xml inside the <manifest> tag and before the <application> tag.

Answer 1

Depending on the device, I've personally found Environment.getExternalStorage*() to be unreliable in what it points to. In this case, it's probably pointing to the emulated storage which doesn't seem to like I/O. I ended up just using "/sdcard/Movies/" which worked far more reliably than Environment.getExternalStoragePublicDirectory("Movies") ever did.

Answer 2

我不知道为什么，但是我重新创建了AVD，现在可以读取它了。