NSFileManager mountedVolumeURLsIncludingResourceValuesForKeys example ios

mountedVolumeURLsIncludingResourceValuesForKeys :options:

Returns an array of URLs that identify the mounted volumes available on the computer.

- (NSArray *)mountedVolumeURLsIncludingResourceValuesForKeys:(NSArray *)propertyKeys options:(NSVolumeEnumerationOptions)options

Parameters

propertyKeys

An array of keys that identify the file properties that you want pre-fetched for each volume. For each returned URL, the values for these keys are cached in the corresponding NSURL objects. You may specify nil for this parameter. For a list of keys you can specify, see Common File System Resource Keys.

options

Option flags for the enumeration. See “Mounted Volume Enumeration Options.”

Return Value of [NSFileManager mountedVolumeURLsIncludingResourceValuesForKeys]

An array of NSURL objects identifying the mounted volumes.

Discussion

This call may block if I/O is required to determine values for the requestedpropertyKeys.

Example of [NSFileManager mountedVolumeURLsIncludingResourceValuesForKeys]

NSArray *keys = [NSArray arrayWithObjects:NSURLVolumeNameKey, NSURLVolumeURLForRemountingKey, NSURLVolumeIsEjectableKey, NSURLVolumeIsRemovableKey, nil];
NSArray *urls = [[NSFileManager defaultManager] mountedVolumeURLsIncludingResourceValuesForKeys:keys options:0];

for (NSURL *url in urls) 
{
NSError *error;
NSNumber *isRemovable;
NSString *volumeName; 

[url getResourceValue:&isRemovable forKey:NSURLVolumeIsRemovableKey error:&error];
[url getResourceValue:&volumeName forKey:NSURLVolumeNameKey error:&error];

NSLog(@"Standard Device : %@ - Removable: %c", volumeName, [isRemovable boolValue]);

}