实时摄像机背景iOS Objective-C是否使用UIImagePickerController？

Question

Is it possible to use UIImagePickerController class for my live camera background?

My App uses UIImagepickercontroller for capturing images and video. My design is like this:

Two buttons (button 1 for Photo, button 2 for Video) in Home View Controller, but at the same time, my background is a like camera. I have successfully implemented the photo and video function. All are complete except for the live background.

I already tried this: Setting a background image/view to live camera view? using AVFoundation. But it makes the camera load so slow. And sometimes the background freezes.

My code for video and photo:

1. VIDEO:

    -(IBAction)videoActionButton:(id)sender { NSLog(@"video button has been clicked"); // [self dismissViewControllerAnimated:NO completion:nil]; // VideoViewController *videoViewController = [[VideoViewController alloc] initWithNibName:nil bundle:nil]; // [self.navigationController pushViewController:videoViewController animated:YES]; if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) { videoRecorder = [[UIImagePickerController alloc] init]; videoRecorder.sourceType = UIImagePickerControllerSourceTypeCamera; videoRecorder.delegate = self; NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera]; NSArray *videoMediaTypesOnly = [mediaTypes filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(SELF contains %@)", @"movie"]]; if ([videoMediaTypesOnly count] == 0) //Is movie output possible? { UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Sorry but your device does not support video recording" delegate:nil cancelButtonTitle:@"OK" destructiveButtonTitle:nil otherButtonTitles:nil]; [actionSheet showInView:[[self view] window]]; // [actionSheet autorelease]; } else { //Select front facing camera if possible if ([UIImagePickerController isCameraDeviceAvailable:UIImagePickerControllerCameraDeviceFront]) videoRecorder.cameraDevice = UIImagePickerControllerCameraDeviceFront; videoRecorder.mediaTypes = videoMediaTypesOnly; videoRecorder.videoQuality = UIImagePickerControllerQualityTypeMedium; videoRecorder.videoMaximumDuration = 600; //Specify in seconds (600 is default) [self presentViewController:videoRecorder animated:YES completion:nil]; } // [videoRecorder release]; } else { //No camera is availble } // [imagePickerController release]; // UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil]; // UINavigationController *videoViewController = [sb instantiateViewControllerWithIdentifier:@"videoViewController"]; // [self presentViewController:videoViewController animated:NO completion:NULL]; } 

2. PHOTO:

     -(IBAction)photoActionButton:(id)sender { NSLog(@"photo button has been clicked"); photoButtonClicked = true; UIImagePickerControllerSourceType type = UIImagePickerControllerSourceTypeCamera; if([UIImagePickerController isSourceTypeAvailable:type]){ UIImagePickerController *picker = [[UIImagePickerController alloc] init]; picker.allowsEditing = NO; picker.delegate = self; picker.sourceType = type; [self presentViewController:picker animated:YES completion:nil]; } } 

PS: Can someone help me with code format?

Answer 1

You can use cameraOverlayView property of of UIImagePickerController.

1. Create a UIImagePickerController
2. Configure the view with buttons(view should be clear background color)
3. Set the view as cameraOverlayView of the image picker
4. Present imagepicker

Answer 2

You should use AVCam for this.

https://github.com/gabro/AVCam

Thanks