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This week's tutorial focuses on allowing users to select a photo from their photo library for a chat app. The tutorial introduces two classes, with the first being UIIMagePickerController that provides a UI for selecting images in a grid layout without the need to build custom UI. It also allows users to choose the source, such as the camera, to launch a viewfinder. The tutorial also mentions a CWC ideas board for submitting and voting on topic ideas.
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