iOS：如何用动画效果打开相机？

Question

I want to open camera with animation effect, so that it should appear that camera is opening in the parent screen only. I am using camera overlay screen and on click event of button in parent screen,camera overlay screen is opening,in camera overlay screen there is a cancel button to close the camera,so while closing the camera again I need to show the animation effect that it should appear that now camera is closed in the same parent scree. I have tried kCATransitionMoveIn but not fully satisfied,if any once has better solution please help me.

CATransition * contentAnimation = [CATransition animation];
    contentAnimation.type = kCATransitionMoveIn;
    contentAnimation.subtype = kCATransitionFromBottom;
    contentAnimation.duration = 1.0;
    contentAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
    [[self.view layer] addAnimation:contentAnimation forKey:kCATransition];
    //self.view.hidden = YES;
    [CATransaction commit];
    // Show the scanner overlay
    [self presentModalViewController:overlayController.parentPicker animated:TRUE];

Answer 1

This could be somewhat tidious but try out downloading ZBar SDK which is .dmg file. and double click it. You will find Examples Folder. In that you will find 4 apps. Try out that app in Device only. You will find amazing CAMERA open with animation effect.

Answer 2

我已经解决了这个问题，我已经将ZBar SDK示例作为参考，这个link1和link2也帮助了我。