Enviroment 폴더 경로 얻기

공식 SDK 주소 https://developer.android.com/reference/android/os/Environment.html

External 폴더 경로를 얻기 위해 Enviroment를 사용한 방법이다.

위 sdk문서를 보면 다양한 메소드들이 제공된다.

Public Methods
static File	getDataDirectory() Return the user data directory.
static File	getDownloadCacheDirectory() Return the download/cache content directory.
static File	getExternalStorageDirectory() Return the primary shared/external storage directory.
static File	getExternalStoragePublicDirectory(String type) Get a top-level shared/external storage directory for placing files of a particular type.
static String	getExternalStorageState(File path) Returns the current state of the shared/external storage media at the given path.
static String	getExternalStorageState() Returns the current state of the primary shared/external storage media.
static File	getRootDirectory() - 기본적으로 read only! Return root of the "system" partition holding the core Android OS.
static String	getStorageState(File path) This method was deprecated in API level 21. use getExternalStorageState(File)
static boolean	isExternalStorageEmulated() Returns whether the primary shared/external storage media is emulated.
static boolean	isExternalStorageEmulated(File path) Returns whether the shared/external storage media at the given path is emulated.
static boolean	isExternalStorageRemovable(File path) Returns whether the shared/external storage media at the given path is physically removable.
static boolean	isExternalStorageRemovable() Returns whether the primary shared/external storage media is physically removable.

안드로이드에서 제공하는 기본 폴더(도큐먼트, 음악, 알림, 벨소리 등)를 접근하기 위해서는 Enviroment의 type을 설정한다.

예는 아래와 같다.

getExternalStoragePublicDirectory(Enviroment.type)

타입의 종류는 아래와 같다.

public static String DIRECTORY_MUSIC = "Music";
public static String DIRECTORY_PODCASTS = "Podcasts";
public static String DIRECTORY_RINGTONES = "Ringtones";
public static String DIRECTORY_ALARMS = "Alarms";
public static String DIRECTORY_NOTIFICATIONS = "Notifications";
public static String DIRECTORY_PICTURES = "Pictures";
public static String DIRECTORY_MOVIES = "Movies";
public static String DIRECTORY_DOWNLOADS = "Download";
public static String DIRECTORY_DCIM = "DCIM";
public static String DIRECTORY_DOCUMENTS = "Documents";

그 외 어플리케이션 고유 저장소를 접근하기 위한 방법은

API
File Context.getExternalFilesDir(String type)
애플리케이션 고유 영역의 데이터 유형에 따른 외부 저장소의 저장 공간 경로를 반환합니다. 인자로 디렉터리의 유형을 넘겨줍니다.

각 경로의 역할은 공용 영역과 동일합니다.

인자명	경로
Environment.DIRECTORY_ALARMS	/mnt/sdcard/Android/data/[패키지 이름]/files/Alarms
Environment.DIRECTORY_DCIM	/mnt/sdcard/Android/data/[패키지 이름]/files/DCIM
Environment.DIRECTORY_DOWNLOADS	/mnt/sdcard/Android/data/[패키지 이름]/files/Downloads
Environment.DIRECTORY_MUSIC	/mnt/sdcard/Android/data/[패키지 이름]/files/Music
Environment.DIRECTORY_MOVIES	/mnt/sdcard/Android/data/[패키지 이름]/files/Movies
Environment.DIRECTORY_NOTIFICATIONS	/mnt/sdcard/Android/data/[패키지 이름]/files/Notifications
Environment.DIRECTORY_PICTURES	/mnt/sdcard/Android/data/[패키지 이름]/files/Pictures
Environment.DIRECTORY_PODCASTS	/mnt/sdcard/Android/data/[패키지 이름]/files/Podcasts
null	/mnt/sdcard/Android/data/[패키지 이름]/files

이며, 필요했던게 공용 영역 접근이라 이 부분에 대한 글은 아래 주소 내용을 복사했다.

http://androidhuman.com/432