2014/10/15 下午 10:12:53

iphone Programming Glossary: previewview

How can I take a photo frequently with iPhone?

http://stackoverflow.com/questions/1325897/how-can-i-take-a-photo-frequently-with-iphone

headers of a Private Library called 'PhotoLibrary'. Setup your project in XCode. Add PLCameraController sharedInstance previewView to your UIWindow in applicationDidFinishLaunching . Create a NSTimer repeats every 30 20 secs. In the timer's callback run..

camera overlay view - just for preview?

http://stackoverflow.com/questions/2081872/camera-overlay-view-just-for-preview

the method it calls void timerFireMethod NSTimer theTimer UIView cameraOverlayView UIView theTimer.userInfo UIView previewView cameraOverlayView.superview.superview if previewView nil cameraOverlayView removeFromSuperview previewView insertSubview.. theTimer UIView cameraOverlayView UIView theTimer.userInfo UIView previewView cameraOverlayView.superview.superview if previewView nil cameraOverlayView removeFromSuperview previewView insertSubview cameraOverlayView atIndex 1 cameraOverlayView.hidden.. UIView previewView cameraOverlayView.superview.superview if previewView nil cameraOverlayView removeFromSuperview previewView insertSubview cameraOverlayView atIndex 1 cameraOverlayView.hidden NO theTimer invalidate The whole NSTimer thing is added..

Capturing zoomed preview view in AVFoundation

http://stackoverflow.com/questions/8150148/capturing-zoomed-preview-view-in-avfoundation

my code for adding AVFoundationVideoPreviewLayer to view create a uiview subclass for showing the camera feed UIView previewView UIView alloc initWithFrame CGRectMake 0 0 320 430 self view addSubview previewView CGRect layerRect CGRectMake 0 0 320 430.. for showing the camera feed UIView previewView UIView alloc initWithFrame CGRectMake 0 0 320 430 self view addSubview previewView CGRect layerRect CGRectMake 0 0 320 430 self avCaptureVideoPreviewLayer setBounds layerRect self previewLayer setPosition.. CGPointMake CGRectGetMidX layerRect CGRectGetMidY layerRect add the video previewview layer to the preview view previewView layer addSublayer self avCaptureVideoPreviewLayer code for zooming preview view zoom the preview view using core graphics..