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I list a directory construction of Android.

  1. I find the directory are same when list directory with these path /sdcard, /storage/sdcard0, /storage/emulated/legacy/and storage/emulated/0/, why?

  2. The function Environment.getExternalStorageDirectory() can return /storage/emulated/0, I hope to return /storage/extSdCard/, which funation should I use?

  3. In my android mobile phone, the /storage/extSdCard/ point to a removable SD card, does the SD card belong to External Storage ? You know storage/emulated/0/ point to my phone memory Card! What are different between extSdCard and External Storage ?

Root enter image description here

sdcard enter image description here

storage enter image description here

storage/sdcard0/ enter image description here

storage/emulated/0/ enter image description here

storage/extSdCard/ enter image description here

HelloCW
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