book
iOS Components and Frameworks: Understanding the Advanced Features of the iOS SDK
by Kyle Richter, Joe Keeley
November 2013
Intermediate to advanced
576 pages
19h 3m
English
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Assets
In the ICFAssetGroupViewController viewDidLoad method, start by displaying the group name as the view title, and set up an ALAssetsLibrary property so that it will be available throughout the life cycle of the view controller. Prepare an empty mutable array that will be populated with ALAsset instances. Also check whether the selected group is the Camera Roll; if so, enable the Add button so that the user can take a picture with the camera and see it.
- (void)viewDidLoad{ [super viewDidLoad]; [self setTitle:self.assetGroupName]; NSRange cameraRollLoc = [self.assetGroupName rangeOfString:@"Camera Roll"]; if (cameraRollLoc.location == NSNotFound) { [self.addButton setEnabled:NO]; } ...
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