ios - 在没有用户交互的情况下捕获图像

Question

我想使用前置摄像头在没有任何用户交互的情况下在 iOS 中拍摄照片。谁能告诉我如何做到这一点？

我takePicture在课堂上使用了该函数，UIImagePickerController但它不起作用，因为委托方法(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)信息从未被调用：

-(void)takePicture:(id)sender
{
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
//Use camera if device has one otherwise use photo library
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
    [imagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
}
else
{
    [imagePicker setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
}

[imagePicker setDelegate:self];

//Show image picker
     [imagePicker takePicture];
}

谁能告诉我正确的方法来做到这一点？

Answer 1

您需要添加以下代码

//Getting image from front camera
imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceFront;

[self imagePicker animated:YES completion:nil];