Question

我正在尝试在视图控制器中创建自定义ImagePicker（相机）。

这里是代码：

    - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Instantiate the UIImagePickerController instance
        self.picker = [[UIImagePickerController alloc] init];

        // Configure the UIImagePickerController instance
        self.picker.sourceType = UIImagePickerControllerSourceTypeCamera;
        self.picker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;
        self.picker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
        self.picker.showsCameraControls = NO;

        // Make us the delegate for the UIImagePickerController
        self.picker.delegate = self;

        // Set the frames to be full screen
        CGRect screenFrame = [[UIScreen mainScreen] bounds];
        self.view.frame = screenFrame;
        self.picker.view.frame = screenFrame;

        // Set this VC's view as the overlay view for the UIImagePickerController
        self.picker.cameraOverlayView = self.view;
    }
    return self;
}

我所拥有的是一个带有我创建的按钮的黑色页面，仅此而已。当我按下拍照按钮时，它会拍摄一张真实的照片。所以我的问题是UIImagePicker没有在我的视图中显示摄像头捕获。

任何人都可以帮助我。提前谢谢。

Answer 1

确保使用正确的委托方法在拍摄后显示图像。像这样：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
NSData *myPhotoData = [[NSData alloc] init];
myPhotoData = UIImageJPEGRepresentation(image, 0.5); // compressionQuality between 0.0 and 1.0 higher being less compression
myPhotoOutlet.image = [UIImage imageWithData:myPhotoData]; // myPhotoOutlet is an UIImageView outlet on your screen
[self dismissViewControllerAnimated:YES completion:nil];
}

Answer 2

您必须在.h文件中添加委托声明：

@interface YourViewcontroller : UIViewController <UIImagePickerControllerDelegate>

您必须在.m文件中实现委托方法才能获取图片：

-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    [picker dismissModalViewControllerAnimated:YES];
    UIImage *newImage = [info objectForKey:UIImagePickerControllerOriginalImage];
    // and then you affect your image in your image view
   UIImageView *yourImageView= [[UIImageView alloc] initWithFrame:CGRectMake(0,0,300,300)];
   yourImageView.image=newImage;
}

我希望能帮到你！

自定义UIImagePickerController视图不起作用

2 个答案: