iOS版自定义相机的UIImagePickerController作物来圈 - 在预览视图

我正在使用此代码，以自定义相机作物：iOS版自定义相机的UIImagePickerController作物来圈 - 在预览视图

UIImagePickerController editing view circle overlay

这工作完全在相机胶卷而不是拍照

如果我更改了[navigationController.viewControllers count] == 3 - > [navigationController.viewControllers count] == 1也适用于相机，但不适用于下一个视图（您接受使用该照片的预览视图）

Som一个人帮助我？

-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{ 
if (buttonIndex == 0) { 
    NSLog(@"Camara"); 
    UIImagePickerController * imagePicker = [[UIImagePickerController alloc] init]; 
    imagePicker.allowsEditing = YES; 
    imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera; 
    imagePicker.delegate = self; 
    self.isCamera = YES; 

    [self presentViewController:imagePicker animated:YES completion:nil]; 

}else{ 
    NSLog(@"Carrete"); 
    UIImagePickerController *imagePickerController = [[UIImagePickerController alloc]init]; 
    imagePickerController.allowsEditing = YES; 
    imagePickerController.delegate = self; 
    imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
    self.isCamera = NO; 
    [self presentViewController:imagePickerController animated:YES completion:nil]; 
}

}

- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated{ 
if (self.isCamera) { 
    if ([navigationController.viewControllers count] == 1) 
    { 
     CGFloat screenHeight = [[UIScreen mainScreen] bounds].size.height; 

     UIView *plCropOverlay = [[[viewController.view.subviews objectAtIndex:1]subviews] objectAtIndex:0]; 

     plCropOverlay.hidden = YES; 

     int position = 0; 

     if (screenHeight == 568) 
     { 
      position = 124; 
     } 
     else 
     { 
      position = 80; 
     } 

     CAShapeLayer *circleLayer = [CAShapeLayer layer]; 

     UIBezierPath *path2 = [UIBezierPath bezierPathWithOvalInRect: 
           CGRectMake(0.0f, position, 320.0f, 320.0f)]; 
     [path2 setUsesEvenOddFillRule:YES]; 

     [circleLayer setPath:[path2 CGPath]]; 

     [circleLayer setFillColor:[[UIColor clearColor] CGColor]]; 
     UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, 320, screenHeight-72) cornerRadius:0]; 

     [path appendPath:path2]; 
     [path setUsesEvenOddFillRule:YES]; 

     CAShapeLayer *fillLayer = [CAShapeLayer layer]; 
     fillLayer.path = path.CGPath; 
     fillLayer.fillRule = kCAFillRuleEvenOdd; 
     fillLayer.fillColor = [UIColor blackColor].CGColor; 
     fillLayer.opacity = 0.8; 
     [viewController.view.layer addSublayer:fillLayer]; 

     UILabel *moveLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 10, 320, 50)]; 
     [moveLabel setText:@"Move and Scale"]; 
     [moveLabel setTextAlignment:NSTextAlignmentCenter]; 
     [moveLabel setTextColor:[UIColor whiteColor]]; 

     [viewController.view addSubview:moveLabel]; 
    } 

}else{ 
    if ([navigationController.viewControllers count] == 3) 
    { 
     CGFloat screenHeight = [[UIScreen mainScreen] bounds].size.height; 

     UIView *plCropOverlay = [[[viewController.view.subviews objectAtIndex:1]subviews] objectAtIndex:0]; 

     plCropOverlay.hidden = YES; 

     int position = 0; 

     if (screenHeight == 568) 
     { 
      position = 124; 
     } 
     else 
     { 
      position = 80; 
     } 

     CAShapeLayer *circleLayer = [CAShapeLayer layer]; 

     UIBezierPath *path2 = [UIBezierPath bezierPathWithOvalInRect: 
           CGRectMake(0.0f, position, 320.0f, 320.0f)]; 
     [path2 setUsesEvenOddFillRule:YES]; 

     [circleLayer setPath:[path2 CGPath]]; 

     [circleLayer setFillColor:[[UIColor clearColor] CGColor]]; 
     UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, 320, screenHeight-72) cornerRadius:0]; 

     [path appendPath:path2]; 
     [path setUsesEvenOddFillRule:YES]; 

     CAShapeLayer *fillLayer = [CAShapeLayer layer]; 
     fillLayer.path = path.CGPath; 
     fillLayer.fillRule = kCAFillRuleEvenOdd; 
     fillLayer.fillColor = [UIColor blackColor].CGColor; 
     fillLayer.opacity = 0.8; 
     [viewController.view.layer addSublayer:fillLayer]; 

     UILabel *moveLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 10, 320, 50)]; 
     [moveLabel setText:@"Move and Scale"]; 
     [moveLabel setTextAlignment:NSTextAlignmentCenter]; 
     [moveLabel setTextColor:[UIColor whiteColor]]; 

     [viewController.view addSubview:moveLabel]; 
    } 

}

}

来源

2015-02-06 raul

难道你有任何解决方案我也受到相机的困扰。请更新我http://stackoverflow.com/questions/32768211/circular-cropper-camera-with-uiimagepickercontroller-ios – user100 2015-09-25 05:38:17

虽然我相信我的回答可能为时已晚，我结束了它混合我的解决方案有这样一条：https://gist.github.com/hamin/e8c6dfe00d9c81375f3e，其中：

为了让叠加在相机上正常工作，我正在听通知（拍摄&拒绝图片）由于添加或删除圈覆盖
保留上面提到的解决方案，我需要循环通过UINavigationController并绘制圆覆盖时请求。

综上所述，请看下面我的解决方案写在斯威夫特：

public class CustomPicture: NSObject { 
//MARK: - Properties 
private var myPickerController: UIImagePickerController? 
private var plCropOverlayBottomBar: UIView? 
private var customLayer: CAShapeLayer? 

//MARK: - Constants 
private let screenHeight = UIScreen.mainScreen().bounds.size.height 
private let screenWidth = UIScreen.mainScreen().bounds.size.width 
private let kCameraNotificationIrisAnimationEnd = "_UIImagePickerControllerUserDidCaptureItem" 
private let kCameraNotificationUserRejection = "_UIImagePickerControllerUserDidRejectItem" 
private let kPUUIImageViewController = "PUUIImageViewController" 
private let kPLUIImageViewController = "PLUIImageViewController" 
private let kPLCropOverlayCropView = "PLCropOverlayCropView" 
private let kPLCropOverlayBottomBar = "PLCropOverlayBottomBar" 

//MARK: - Overrides 
deinit { 
    NSNotificationCenter.defaultCenter().removeObserver(self) 
} 

//MARK: - Privates 
private func camera() { 
    listenToCameraNotifications() 
    let myPickerController = UIImagePickerController() 

    myPickerController.delegate = self 
    myPickerController.sourceType = .Camera 
    myPickerController.allowsEditing = true 

    self.myPickerController = myPickerController 

    self.navigationController?.presentViewController(myPickerController, animated: true, completion: nil) 
} 

private func listenToCameraNotifications() { 
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(cameraNotificationIrisEnd), name: kCameraNotificationIrisAnimationEnd, object: nil) 

    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(cameraNotificationRejected), name: kCameraNotificationUserRejection, object: nil) 
} 

private func photoLibrary() { 
    let myPickerController = UIImagePickerController() 

    myPickerController.delegate = self 
    myPickerController.allowsEditing = true 
    myPickerController.sourceType = .PhotoLibrary 

    self.myPickerController = myPickerController 

    self.navigationController?.presentViewController(myPickerController, animated: true, completion: nil) 
} 

//MARK: - Selector 
/** 
Listen to notification sent after reject button has been touched 
*/ 
func cameraNotificationRejected() { 
    customLayer!.removeFromSuperlayer() 
    plCropOverlayBottomBar!.removeFromSuperview() 
} 

/** 
Listen to notification sent after picture has been taken 
*/ 
func cameraNotificationIrisEnd() { 
    addCircleOverlay(viewController: self.myPickerController!) 
} 
} 

extension CustomPicture: UINavigationControllerDelegate { 
//MARK: - Override 
public func navigationController(navigationController: UINavigationController, willShowViewController: UIViewController, animated: Bool) { 
    if isImageViewer(navigationController: navigationController) { 
     addCircleOverlay(viewController: willShowViewController) 
    } 
} 

//MARK: - Private 
private func addCircleOverlay(viewController viewController: UIViewController) { 
    hidePLCropOverlay(view: viewController.view) 
    setPLCropOverlayBottomBar(view: viewController.view) 
    setCustomLayer(viewController: viewController) 
} 

private func getCirclePath() -> UIBezierPath { 
    let circlePath = UIBezierPath(ovalInRect: CGRectMake(0, screenHeight/2 - screenWidth/2, screenWidth, screenWidth)) 
    circlePath.usesEvenOddFillRule = true 

    let circleLayer = CAShapeLayer() 
    circleLayer.path = circlePath.CGPath 
    circleLayer.fillColor = UIColor.clearColor().CGColor 

    return circlePath 
} 

private func getMaskPath(screenWidth screenWidth: CGFloat, screenHeight: CGFloat, circlePath: UIBezierPath) -> UIBezierPath { 
    let maskPath = UIBezierPath(roundedRect: CGRectMake(0, 0, screenWidth, screenHeight), cornerRadius: 0) 
    maskPath.appendPath(circlePath) 
    maskPath.usesEvenOddFillRule = true 

    return maskPath 
} 

private func hidePLCropOverlay(view view: UIView) { 
    for myView in view.subviews { 
     if myView.isKindOfClass(NSClassFromString(kPLCropOverlayCropView)!) { 
      myView.hidden = true 
      break 
     } else { 
      hidePLCropOverlay(view: myView as UIView) 
     } 
    } 
} 

private func isImageViewer(navigationController navigationController: UINavigationController) -> Bool { 
    if (navigationController.viewControllers.count == 3 && 
     (navigationController.viewControllers[2].dynamicType.description() == kPUUIImageViewController || 
      navigationController.viewControllers[2].dynamicType.description() == kPLUIImageViewController)) { 

     return true 
    } 

    return false 
} 

private func setPLCropOverlayBottomBar(view view: UIView) { 
    for myView in view.subviews { 
     if myView.isKindOfClass(NSClassFromString(kPLCropOverlayBottomBar)!) { 
      plCropOverlayBottomBar = myView 
      break 
     } 
     else { 
      savePLCropOverlayBottomBar(view: myView as UIView) 
     } 
    } 
} 

private func setCustomLayer(viewController viewController: UIViewController) { 
    let circlePath = getCirclePath() 
    let maskPath = getMaskPath(screenWidth: screenWidth, screenHeight: screenHeight, circlePath: circlePath) 
    let maskLayer = CAShapeLayer() 
    maskLayer.path = maskPath.CGPath 
    maskLayer.fillRule = kCAFillRuleEvenOdd 
    maskLayer.fillColor = UIColor.blackColor().colorWithAlphaComponent(0.8).CGColor 
    customLayer = maskLayer 

    viewController.view.layer.addSublayer(customLayer!) 
    viewController.view.addSubview(plCropOverlayBottomBar!) // put back overlayBottomBar once we set its parent to hidden (subview of PLCropOverlay) 
} 
}

来源

2016-07-24 14:04:18

这里是一个可以帮助你创建作物覆盖解决方案： -

- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated 
{ 
    if ([navigationController.viewControllers count] == 3) 
    { 
     CGFloat screenHeight = [[UIScreen mainScreen] bounds].size.height; 

     UIView *plCropOverlay = [[[viewController.view.subviews objectAtIndex:1]subviews] objectAtIndex:0]; 

     plCropOverlay.hidden = YES; 

     int position = 0; 

     if (screenHeight == 568) 
     { 
      position = 124; 
     } 
     else 
     { 
      position = 80; 
     } 

     CAShapeLayer *circleLayer = [CAShapeLayer layer]; 

     UIBezierPath *path2 = [UIBezierPath bezierPathWithOvalInRect: 
           CGRectMake(0.0f, position, 320.0f, 320.0f)]; 
     [path2 setUsesEvenOddFillRule:YES]; 

     [circleLayer setPath:[path2 CGPath]]; 

     [circleLayer setFillColor:[[UIColor clearColor] CGColor]]; 
     UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, 320, screenHeight-72) cornerRadius:0]; 

     [path appendPath:path2]; 
     [path setUsesEvenOddFillRule:YES]; 

     CAShapeLayer *fillLayer = [CAShapeLayer layer]; 
     fillLayer.path = path.CGPath; 
     fillLayer.fillRule = kCAFillRuleEvenOdd; 
     fillLayer.fillColor = [UIColor blackColor].CGColor; 
     fillLayer.opacity = 0.8; 
     [viewController.view.layer addSublayer:fillLayer]; 

     UILabel *moveLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 10, 320, 50)]; 
     [moveLabel setText:@"Move and Scale"]; 
     [moveLabel setTextAlignment:NSTextAlignmentCenter]; 
     [moveLabel setTextColor:[UIColor whiteColor]]; 

     [viewController.view addSubview:moveLabel]; 
    } 
}

来源

2017-02-09 12:52:55

iOS版自定义相机的UIImagePickerController作物来圈 - 在预览视图

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