I have an option to display a UIImagePicker and select an image from the user's camera roll within my app. THe issue that I'm running in is that the photos are sorted with the oldest on top. This makes it easy to pick images that have been taken months ago. I want the user to quickly select images that were taken a few minutes ago without having to scroll to the end of the list (bottom of the list).
Is there away to ask the default UIImagePicker to sort its results and display latest ones or at least scroll to the end of the list after being presented?
- (BOOL) startCameraControllerFromViewController: (UIViewController*) controller
usingDelegate: (id <UIImagePickerControllerDelegate,
UINavigationControllerDelegate>) delegate {
if (([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera] == NO)
|| (delegate == nil)
|| (controller == nil))
return NO;
UIImagePickerController *cameraUI = [[UIImagePickerController alloc] init];
cameraUI.sourceType = UIImagePickerControllerSourceTypeCamera;
// Displays a control that allows the user to choose picture or
// movie capture, if both are available:
cameraUI.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeImage];
// Hides the controls for moving & scaling pictures, or for
// trimming movies. To instead show the controls, use YES.
cameraUI.allowsEditing = NO;
cameraUI.delegate = delegate;
[controller presentModalViewController: cameraUI animated: YES];
return YES;
}
As indicated in this This question
the solution involves adding an extra step before selecting an image with the line:
imagePickerController.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
This displays the list of available photo libraries and scrolls to the bottom of the selected one.
Related
I use a UIImagePickerController (photoPicker) to take pictures with the camera, and edit those picture (allowEditing = YES). The user can switch between Camera and Library with a button in photoPicker.view, but I want to remove this button when photoPicker is in editing mode.
In photoLibrarySourceType the picker uses a push to show editing mode, so it works with this method:
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
if (navigationController == photoPicker) {
NSLog(#"navigation ");
if ([navigationController.viewControllers indexOfObject:viewController] == 1)
{
// If second UIViewController, set your overlay.
NSLog(#"editing");
}
}
}
But in cameraSourceType, there is no navigation between camera and editing mode.
I came up with a little hack and it works for me. Am still a little new so please optimize at will as i couldn't find another way to do it.
The basic idea is to create an invisible button over the default camera button that performs a method that calls [uiimagepickercontroller takePicture]
here is my sample code
#implementation myViewController
{
UIImagePickerController *myImagePickerController;
UIButton * fakeCameraButton;
}
- (IBAction)showImagePicker:(id)sender{
// accessible camera validations implied
myImagePickerController = [[UIImagePickerController alloc]init];
myImagePickerController.sourceType=UIImagePickerControllerSourceTypeCamera;
myImagePickerController.showsCameraControls = YES;
myImagePickerController.delegate=self;
myImagePickerController.allowsEditing=YES;
CGFloat myViewHeight = 100; // you play around with the positions to get your desired frame size. This worked for me
UIView * myView = [[UIView alloc] initWithFrame:CGRectMake(0, myImagePickerController.view.frame.size.height - myViewheight, picker.view.frame.size.width, myViewheight)];
fakeCameraButton = [[UIButton alloc] initWithFrame:CGRectMake(myView.frame.size.width / 2 - 30, myView.frame.size.height/2-15, 60, 60)];// position it over the default camera button
[fakeCameraButton addTarget:self action:#selector(cameraButtonPressed) forControlEvents:UIControlEventTouchUpInside];
[fakeCameraButton setTitle:#"" forState:UIControlStateNormal];
[myView addSubview:fakeCameraButton];
myImagePickerController.cameraOverlayView = myView;
[self presentViewController:myImagePickerController animated:YES completion:nil];
}
-(void)cameraButtonPressed{
// Make sure you check if camera is ready before this method.
[myImagePickerController takePicture];
// you are in editing/preview mode here if allowsEditing = YES
// you can remove all your custom overlay views by
myImagePickerController.cameraOverlay = nil
}
Like i said before just make sure you check if camera is ready. You can find answers here on stackoverflow on how to do it.
This code may suck so editing or alternative solutions are welcomed.
I need dev buddy to help me learn more about ios dev and ask questions. anyone interested?
I am trying to simply enable picking multiple images from photolibrary using the UIImagePickerController, I wish I can add a subview on bottom of the photo picker so it look something like this app does:
It there a simple way you can do it? My code currently only pops the images in a standard way but I only dismiss the controller when loaded 6 images
The important thing there is if anyway I can add a small view/toolbar to the photo picker view, like the example did, I then can do the rest
- (void)getMediaFromSource:(UIImagePickerControllerSourceType)sourceType{
//get all available source types
NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:sourceType];
//if source type available and supported media type is not null
if ([UIImagePickerController isSourceTypeAvailable:sourceType
&& [mediaTypes count] > 0]) {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
//picker.mediaTypes = mediaTypes; //allow videos
picker.delegate = self;
picker.sourceType = sourceType; //set source type to the given type
/** WANT TO ADD A CUSTOM VIEW IN THE PHOTO PICKER VIEW **/
[self presentViewController:picker animated:YES completion:nil];
} else {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Error accessing media"
message:#"Device doesn't support that media type"
delegate:nil
cancelButtonTitle:#"Drat !"
otherButtonTitles: nil];
[alert show];
}
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
self.lastChosenMediaType = [info objectForKey:UIImagePickerControllerMediaType]; //record media type
//if media type is image
if ([lastChosenMediaType isEqual:(NSString *) kUTTypeImage]) {
UIImage *chosenImage = [info objectForKey:UIImagePickerControllerOriginalImage]; //load image
//save the image if is from camera shot
if (imageOrVideoSourceType == UIImagePickerControllerSourceTypeCamera) {
UIImageWriteToSavedPhotosAlbum (chosenImage, nil, nil , nil);
}
[images addObject:chosenImage]; //add to image list
imageNum++;
}
changeImageOrVideo = true;
if(imageNum >= 5){
[picker dismissViewControllerAnimated:YES completion:nil];
}
}
The main reason for using hacks like shifting the UIImagePickerController up and showing selected images underneath was because the asset library alternative would involve the user being asked for location access due to the information about where the photo was taken being available in the image metadata.
In iOS 6 the user is asked if they want to allow the app to access their photos (not location) and you get asked this question for both the asset library approach and the UIImagePickerController approach.
As such I think that hacks like the above are nearing the end of their usefulness. Here is a link to a library providing selection of multiple images using the Assets library there are others.
I have a UIImagePickerController (source type camera) that I use to take pictures. I have it put properly in my .h (added the #property) and .m (#synthesize). Here's what I use to show it:
if (thePicker == nil) {
thePicker = [[UIImagePickerController alloc] init];
thePicker.delegate = self;
thePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
thePicker.allowsEditing = NO;
}
[self presentModalViewController:thePicker animated:YES];
I'm having an odd problem. Every now and again, after closing/opening it a few times, the camera button OR the used button won't work (but the retake and cancel buttons work). I'm not getting any memory warnings and I have a dealloc and didReceiveMemoryWarnings void statement, but they don't get called.
ANyone else having this problem?
I have seen some apps cover it up with their overlay, but you can't remove it. AVCaptureSession really does sound more appropriate for your purposes. I see one example here:
http://www.musicalgeometry.com/?p=1273
Try this it may help u i guess Thanks!!
I am using the following function to activate either the device camera or the image picker depending on the result of a UIActionSheet. if fromCamera=YES then it works on both iPhone and iPad. if fromCamera=NO then it works on iPhone and the image picker appears. But it crashes on the iPad with the following error: UIStatusBarStyleBlackTranslucent is not available on this device. I already know that the iPad can't display the UIStatusBarStyleBlackTranslucent statusBar, but how do I avoid this crash?
-(void)addPhotoFromCamera:(BOOL)fromCamera{
if(fromCamera){
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
}
else{
picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
}
[self presentModalViewController:picker animated:YES];
}
If you set the picker to UIImagePickerControllerSourceTypePhotoLibrary on the iPad, then you must(!) present it in a popoverview, otherwise you get exceptions. I do it like this, to atleast control the size of the popover (the standard size is too small in my opinion):
-(void)openPhotoPicker
{
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.navigationBar.opaque = true;
//put the image picker in its own container controller, to control its size
UIViewController *containerController = [[UIViewController alloc] init];
containerController.contentSizeForViewInPopover = rightPane.frame.size;
[containerController.view addSubview:imagePicker.view];
//then, put the container controller in the popover
popover = [[UIPopoverController alloc] initWithContentViewController:containerController];
//Actually, I would like to do the following, but iOS doesn't let me:
//[rightPane addSubview:imagePicker.view];
//So, put the popover over my rightPane. You might want to change the parameters to suit your needs.
[popover presentPopoverFromRect:CGRectMake(0.0, 0.0, 10.0,0.0)
inView:rightPane
permittedArrowDirections:UIPopoverArrowDirectionLeft
animated:YES];
//There seems to be some nasty bug because of the added layer (the container controller), so you need to call this now and each time the view rotates (see below)
[imagePicker.view setFrame:containerController.view.frame];
}
I also have the following, to counter a rotation bug:
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
if(imagePicker!=nil && rightPane.frame.size.width>0)
[imagePicker.view setFrame:imagePicker.view.superview.frame];
}
It ain't perfect, but it is ok for my testing purposes at the moment. I consider writing my own Imagepicker, because I don't like being forced to use the popoverview... but well, that's a different story.
I suspect the UIImagePicker is inheriting the translucent status bar from your Info.plist file or from the currently displayed view controller.
What happens if you make the app not have a translucent status bar?
I was having a similar issue, take a look at my answer here:
https://stackoverflow.com/questions/7677058/uiimagepickercontroller-crash-in-ipad-ios5/7839969#7839969
I'm working on an app that allows image capture, but not video capture, but I can't figure out how to remove the photo/video toggle from a UIImagePickerView. This is the code I'm working with, taken from Apple's documentation:
UIImagePickerController *cameraUI = [[UIImagePickerController alloc] init];
cameraUI.sourceType = UIImagePickerControllerSourceTypeCamera;
// Displays a control that allows the user to choose picture or
// movie capture, if both are available:
cameraUI.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType: UIImagePickerControllerSourceTypeCamera];
// Hides the controls for moving & scaling pictures, or for
// trimming movies. To instead show the controls, use YES.
cameraUI.allowsEditing = NO;
cameraUI.delegate = self;
[self presentModalViewController:cameraUI animated:YES];
I'd like to keep all the camera controls EXCEPT the photo/video switch. Thanks!
Or remove this line:
cameraUI.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType: UIImagePickerControllerSourceTypeCamera];
The default value for cameraUI.mediaTypes is "kUTTypeImage". See the documentation.
You just have to set the mediaType property of UIImagePickerController to only contain images, the one you are using there is used to assign all available media types..you can read about it here, if you arent sure what the types are you can always output them to console and then just set that array with the appropriate one (to allow only pictures)