本文参考内容来自作者feifei
内部存储
方法 路径
Environment.getDataDirectory() /data
Environment.getDownloadCacheDirectory() /cache
Environment.getRootDirectory() /system
外部存储
方法 路径
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
