[Android] How to get the each directory path.

EachDirectoryPath.md

System directories

Method	Result
Environment.getDataDirectory()	/data
Environment.getDownloadCacheDirectory()	/cache
Environment.getRootDirectory()	/system

External storage directories

Method	Result
Environment.getExternalStorageDirectory()	/storage/sdcard0
Environment.getExternalStoragePublicDirectory(DIRECTORY_ALARMS)	/storage/sdcard0/Alarms
Environment.getExternalStoragePublicDirectory(DIRECTORY_DCIM)	/storage/sdcard0/DCIM
Environment.getExternalStoragePublicDirectory(DIRECTORY_DOWNLOADS)	/storage/sdcard0/Download
Environment.getExternalStoragePublicDirectory(DIRECTORY_MOVIES)	/storage/sdcard0/Movies
Environment.getExternalStoragePublicDirectory(DIRECTORY_MUSIC)	/storage/sdcard0/Music
Environment.getExternalStoragePublicDirectory(DIRECTORY_NOTIFICATIONS)	/storage/sdcard0/Notifications
Environment.getExternalStoragePublicDirectory(DIRECTORY_PICTURES)	/storage/sdcard0/Pictures
Environment.getExternalStoragePublicDirectory(DIRECTORY_PODCASTS)	/storage/sdcard0/Podcasts
Environment.getExternalStoragePublicDirectory(DIRECTORY_RINGTONES)	/storage/sdcard0/Ringtones

Application directories

Method	Result
getCacheDir()	/data/data/package/cache
getFilesDir()	/data/data/package/files
getFilesDir().getParent()	/data/data/package

Application External storage directories

Method	Result
getExternalCacheDir()	/storage/sdcard0/Android/data/package/cache
getExternalFilesDir(null)	/storage/sdcard0/Android/data/package/files
getExternalFilesDir(DIRECTORY_ALARMS)	/storage/sdcard0/Android/data/package/files/Alarms
getExternalFilesDir(DIRECTORY_DCIM)	/storage/sdcard0/Android/data/package/files/DCIM
getExternalFilesDir(DIRECTORY_DOWNLOADS)	/storage/sdcard0/Android/data/package/files/Download
getExternalFilesDir(DIRECTORY_MOVIES)	/storage/sdcard0/Android/data/package/files/Movies
getExternalFilesDir(DIRECTORY_MUSIC)	/storage/sdcard0/Android/data/package/files/Music
getExternalFilesDir(DIRECTORY_NOTIFICATIONS)	/storage/sdcard0/Android/data/package/files/Notifications
getExternalFilesDir(DIRECTORY_PICTURES)	/storage/sdcard0/Android/data/package/files/Pictures
getExternalFilesDir(DIRECTORY_PODCASTS)	/storage/sdcard0/Android/data/package/files/Podcasts
getExternalFilesDir(DIRECTORY_RINGTONES)	/storage/sdcard0/Android/data/package/files/Ringtones

System image : Android 9.0 (Google APIs) x86_64

/storage/emulated/0/{Media}

/sdcard -> /storage/self/primary
/storage/self/primary -> /mnt/user/0/primary
/mnt/user/0/primary -> /storage/emulrated/0

File gitDir(String name, int mode)
returns directory: /data/data/package/app_{name}