Question

我需要在我的应用程序中创建自定义相机覆盖，我很难让它实际拍照，从前到后切换相机，然后取消。

我创建了一个CameraOverlayViewController类，并在storyboard中设置了所有视图。

当用户选择拍照时，我正在做的是获取叠加效果：

CameraOverlayViewController *customerOverlay = [self.storyboard instantiateViewControllerWithIdentifier:@"camera_overlay"];

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.showsCameraControls = NO;
picker.cameraOverlayView = customerOverlay.view;

customerOverlay.pickerRefernce = picker;

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

这可以很好地显示相机叠加层，因为我希望它被看到。

这是我的CameraOverlayViewController代码：

#import <UIKit/UIKit.h>

@interface CameraOverlayViewController : UIViewController <UIImagePickerControllerDelegate, UINavigationControllerDelegate>

@property (strong, nonatomic) UIImagePickerController *pickerRefernce;
@property (weak, nonatomic) IBOutlet UIButton *cameraButton;
@property (weak, nonatomic) IBOutlet UIView *navBar;

- (IBAction)takePicture:(id)sender;
- (IBAction)switchCamera:(id)sender;
- (IBAction)cancelPicture:(id)sender;

@end


//iphone screen dimensions
#define SCREEN_WIDTH  self.view.bounds.size.width
#define SCREEN_HEIGTH self.view.bounds.size.height

@interface CameraOverlayViewController ()

@end

@implementation CameraOverlayViewController

@synthesize pickerRefernce = _pickerRefernce;

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.

    self.view.backgroundColor = [UIColor clearColor];
    self.navBar.backgroundColor = [UIColor PFYellow];

    self.cameraButton.frame = CGRectMake((SCREEN_WIDTH / 2) - (self.cameraButton.frame.size.width / 2), SCREEN_HEIGTH - self.cameraButton.frame.size.height - 20, self.cameraButton.frame.size.width, self.cameraButton.frame.size.height);


}

- (IBAction)takePicture:(id)sender {

    [self.pickerRefernce takePicture];

}


- (IBAction)switchCamera:(id)sender {

    if(self.pickerRefernce.cameraDevice == UIImagePickerControllerCameraDeviceFront) {

        self.pickerRefernce.cameraDevice = UIImagePickerControllerCameraDeviceRear;

    } else {

        self.pickerRefernce.cameraDevice = UIImagePickerControllerCameraDeviceFront;

    }

}


- (IBAction)cancelPicture:(id)sender {



}

基本上当我按下覆盖视图上的任何按钮（包括取消按钮，没有代码导致错误）时，我在Xcode中出现重大错误。

唯一的输出是“（lldb）”，并在main.m中抛出异常，其中显示“Thread 1：EXC_BAD_ACCESS（code = 1，address = 0x69786d54）

应用程序一直在运行（摄像机视图仍然显示实时图像）但是点击任何内容都没有响应。

另外，我已经点击了继续程序执行按钮至少200次试图让它实际崩溃，但没有任何反应。

我在网上找到的所有例子都已过时（即使苹果示例“PhotoPicker”使用的是xib文件和我不熟悉的奇怪插座），我在这里找到的所有答案都倾向于解释如何让视图显示起来，而不是如何确保它调用所有正确的方法。

任何指导都会很棒，谢谢！

iOS相机叠加问题

0 个答案: