Android cannot read and write SD card (updated 2015-04-02)

Android 4.4 and later systems have read and Write permission restrictions on level two external storage devices, resulting in applications that may not be able to read and write external SD cards, and the following methods can be lifted.

1, root system.

2. Install the RE manager.

3. Use the RE manager to modify the "Platform.xml" file in the "/system/etc/permissions" directory, locate the following label and add the Red font section.

<permission name= "Android.permission.WRITE_EXTERNAL_STORAGE" >
<group gid= "Sdcard_r"/>
<group gid= "SDCARD_RW"/>
<group gid= "MEDIA_RW "/>
</permission>

4. Restart your phone to see if it is possible.

5, if not, you need to re-manager to modify the permissions of the/MNT/MEDIA_RW folder, the user group of all, write, execute permissions are hooked.

Android cannot read and write SD card (updated 2015-04-02)