Log.d(TAG, Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).toString());
Log.d(TAG, getExternalFilesDir(Environment.DIRECTORY_PICTURES).toString());
            		
/storage/emulated/0/Pictures

/storage/emulated/0/Android/data/cn.netkiller.album.education/files/Pictures		
			
			

公共存储目录不会因为APP卸载而删除

		
Environment.getExternalStorageDirectory():                     /storage/emulated/0
Environment.getExternalStoragePublicDirectory(""):             /storage/emulated/0
Environment.getExternalStoragePublicDirectory("test"):         /storage/emulated/0/test
Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)：  /storage/emulated/0/Pictures		
		
			

		
Environment.getDataDirectory():      /data
Context.getCacheDir():               /data/data/cn.netkiller.test/cache
Context.getFilesDir():               /data/data/cn.netkiller.test/files
Context.getFileStreamPath(""):       /data/data/cn.netkiller.test/files
Context.getFileStreamPath("test"):   /data/data/cn.netkiller.test/files/test
		
		
		

		
Environment.getExternalStorageDirectory():               /storage/emulated/0
Context.getExternalCacheDir():                           /storage/emulated/0/Android/data/cn.netkiller.test/cache
Context.getExternalFilesDir(""):                         /storage/emulated/0/Android/data/cn.netkiller.test/files
Context.getExternalFilesDir("test"):                     /storage/emulated/0/Android/data/cn.netkiller.test/files/test
Context.getExternalFilesDir(Environment.DIRECTORY_PICTURES):    /storage/emulated/0/Android/data/cn.netkiller.test/files/Pictures		
		
		

		
public static String DIRECTORY_MUSIC = "Music";
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";