Blur effect in a view of iOS
问题 I want to use an UIImagePicker to have a camera preview being displayed. Over this preview I want to place an overlay view with controls. Is it possible to apply any effects to the preview which will be displayed from camera? I particularly need to apply a blur effect to the camera preview. So I want to have a blurred preview from camera and overlay view with controls. If I decide to capture the still image from the camera, I need to have it original without blur effect. So blur effect must