Following along with this tutorial, I'm trying to make a very simple iOS video app to learn the api. The tutorial tell us to put a button on the view that, when pressed, uses the UIImagePickerController api (a modal or popup view) to show the camera controls. For my app, I wanted the UIImagePickerController (or rather the camera functionality) to appear, not when the button was pressed, but rather when the app opened. When I moved the code into viewDidLoad, I got this error message
2014-06-27 17:04:48.754 VideoBlah[33679:60b] Warning: Attempt to present <UIImagePickerController: 0x1658d4d0> on <ViewController: 0x165be6f0> whose view is not in the window hierarchy!
I therefore tried to get self.view to presentViewController like this
[self.view presentViewController:picker animated:YES completion:NULL];
but UIView doesn't have the selector presentViewController.
Is there a way to get the popup view controller for the UIImagePickerController to appear when the app opens rather than waiting for the user to present a button?
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
//
// UIImagePickerController *picker = [[UIImagePickerController alloc] init];
// picker.delegate = self;
// picker.allowsEditing = YES;
// picker.sourceType = UIImagePickerControllerSourceTypeCamera;
// picker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
//
// [self presentViewController:picker animated:YES completion:NULL];
// }
}
- (IBAction)captureVideo:(id)sender {
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
[self presentViewController:picker animated:YES completion:NULL];
}
}
Try using this code in viewDidAppear.
Related
I have two image views. When I click a button (e.g. takePhoto) underneath of the 1st image view, the photo taken appears in the first image view. However, when I tap the second "takephotoTwo" button, I want the second photo taken to appear in the second image view (imageTwo). Right now, if I take a photo using the second "takephotoTwo" button, the final (same) image appears in both image views. See code below - does anyone know how I can fix this? I hope I explained this well enough.
E.g.
The photo taken with takePhoto (button) should appear in imageView, and the photo taken with takephotoTwo (button) should appear in imageTwo.
ViewController.m
- (IBAction)selectPhoto:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
}
- (IBAction)takePhoto:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:NULL];
}
- (IBAction)takePhotoTwo:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
}
- (IBAction)selectPhotoTwo:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:NULL];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *secondImage = info[UIImagePickerControllerEditedImage];
self.imageTwo.image = secondImage;
UIImage *chosenImage = info[UIImagePickerControllerEditedImage];
self.imageView.image = chosenImage;
[picker dismissViewControllerAnimated:YES completion:NULL];
}
This is easily achieved by keeping track of which button was tapped or storing a reference to the proper image view based on which button was tapped. Then in the image picker delegate method you set the appropriate image view.
Add an instance variable of type UIImageView * named selectedImageView.
Then update the rest of your code as follows:
- (IBAction)selectPhoto:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
selectedImageView = self.imageView; // Add this
[self presentViewController:picker animated:YES completion:NULL];
}
- (IBAction)takePhoto:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
selectedImageView = self.imageView; // Add this
[self presentViewController:picker animated:YES completion:NULL];
}
- (IBAction)takePhotoTwo:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
selectedImageView = self.imageTwo; // Add this
[self presentViewController:picker animated:YES completion:NULL];
}
- (IBAction)selectPhotoTwo:(id)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
selectedImageView = self.imageTwo; // Add this
[self presentViewController:picker animated:YES completion:NULL];
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *image = info[UIImagePickerControllerEditedImage];
selectedImageView.image = image;
[picker dismissViewControllerAnimated:YES completion:NULL];
}
The problem is that no matter which button is tapped, you are giving your UIImagePickerController the same delegate. Therefore the same imagePickerController:didFinishPickingMediaWithInfo: is called. But at that point you have no way of knowing which button was tapped, so you have no way of knowing what image view to put the picture into.
Either give the UIImagePickerController a different delegate for each different button, or store in an instance variable somewhere some information about which button was tapped, so that imagePickerController:didFinishPickingMediaWithInfo: can decide correctly what to do.
I'm using the following code so the user can take a pic:
- (IBAction)takePhoto:(UIButton *)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:NULL];
}
Is there a way to make the camera occupy the hole screen?
What you're seeing is the default implementation of UIImagePickerController which includes camera controls.
Try turning these off by setting showsCameraControls to NO.
If you want to add your own controls, use cameraOverlayView.
I am using UIImagepickerController to capture video in my app.
Sometimes it behaves strangely - that image capturing is coming. Mostly it comes when a new user is registered and try to capture a video or a new ipa file is installed and tested. Eventhough it appears randomly.
When I prompt UIImagepickerController it display take photo button (White button) instead of video record button (Red button)
Here is my code -
UIImagePickerController *imagePicker=[[UIImagePickerController alloc]init];
imagePicker.delegate=self;
if([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
imagePicker.allowsEditing = YES;
imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
imagePicker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
}
[self presentViewController:imagePicker animated:YES completion:NULL];
Just try replacing your code with this.
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
// picker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMoviekUTTypeImage];
picker.mediaTypes = [NSArray arrayWithObjects:(NSString *)kUTTypeMovie,nil];
//picker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentViewController:picker animated:YES completion:NULL];
I am currently working on an a video app in which I'd like to give the user the option of setting the duration for which the video will be recorded. I am trying to implement this using a stepper button. Currently I am able to set this timer statically as follows:
- (IBAction)captureVideo:(id)sender {
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
picker.videoMaximumDuration = 10.0f;
[self presentViewController:picker animated:YES completion:NULL];
}
}
How can I use a stepper's value instead? Or are there any better ways of doing this?
Thanks.
You can see this example, You'll know how to use UIStepper.
I created a CameraOverlayViewController with .xib file to implement a customized camera overlayView with. The overlayView is just a transparent background with a button to select photo from the photoLibrary and it loads successfully in the mainViewController with the following code:
CameraOverlayViewController* overlay = [[CameraOverlayViewController alloc] initWithNibName:#"CameraOverlayViewController" bundle:nil];
cameraPicker.cameraOverlayView = overlay.view;
However, nothing happens when I pressed the button on the cameraOverlayView. No error messages, nothing. Does anyone know what's going on here? Below is my code in the CameraOverlayViewController file:
- (IBAction)select:(UIButton *)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
[self dismissViewControllerAnimated:YES completion:^{
[self presentViewController:picker
animated:YES completion:nil];
}];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self presentViewController:picker animated:YES completion:NULL];
NSLog(#"Just work alrdy!!!");
}
Thanks in advance!
Try This..
-(IBAction)select:(UIButton *)sender {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[self dismissViewControllerAnimated:YES completion:^{
[self presentViewController:picker
animated:YES completion:nil]; ////////check this is called??????
}];
}