在Android上读写外部存储

Question

I'm developing an Android application that reads and writes data in a /sdcard/MyFolder directory. I get the sdcard path trough the method Environment.getExternalStorageDirectory() .

I tested the application on a Samsung device where the path returned by the method is /mnt/sdcard on which I append /MyFolder ; all works fine and I can r/w files in this folder. Now I'm trying to do the same on a Nexus device: I have put my files to read in the /sdcard/MyFolder directory and getExternalStorageDirectory() returns /storage/emulated/0/ as path, on which I append /MyFolder . But in this case I cannot find the files to read.

I set all the storage permissions in the manifest.

Am I doing something wrong? Is there any particular issue related to an emulated directory?

Thanks

Answer 1

In Android 6.0, you have to handle certain permissions at runtime. Please go through this . Because READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE are considered as dangerous permissions and has to be handled at runtime.