iOS Custom UIImagePickerController Camera Crop to circle - 在预览视图中 [英] iOS Custom UIImagePickerController Camera Crop to circle - in preview view
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问题描述
我正在使用此代码制作自定义相机裁剪:
I'm using this code to make a custom camera crop:
UIImagePickerController编辑视图圆叠加
这在相机胶卷中完美无效但不拍照
This works perfectly in camera roll but not taking photos
如果我更改[navigationController.viewControllers count] == 3 - > [navigationController.viewControllers count] == 1也适用于相机,但不适用于下一个视图(预览视图,您接受使用照片)
If I change [navigationController.viewControllers count] == 3 --> [navigationController.viewControllers count] == 1 works for camera too, but not in next view (preview view where you accept to use the photo)
有人帮助我吗??
-(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];
}
}
}
推荐答案
以下是可以帮助您创建裁剪叠加层的解决方案: -
Here is the solution which might help you to create crop overlay:-
- (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];
}
}
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