Пути и папки в Android

1) Системные папки

⚠️ Писать сюда никак нельзя

MethodResult
Environment.getDataDirectory()/data
Environment.getDownloadCacheDirectory()/cache
Environment.getRootDirectory()/system

2) Внешнее хранилище

⚠️ Нужны права WRITE_EXTERNAL_STORAGE

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

3) Папки приложения

MethodResult
getCacheDir()/data/data/package/cache
getFilesDir()/data/data/package/files
getFilesDir().getParent()/data/data/package

4) Папки приложения на внешнем носителе

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