why can't I access iPad photos library? - ios

Question

I'm using IImagePickerController to get photos from the photo library. Works great on the iphone, but won't work on an iPad. There were solutions suggested to use UIpopoverController. I was using UIpopoverController in any earlier version, and I couldn't get it to work. Keep getting an error that the popoverController did not exist. Below is my code. Is there a framework that allows you to use UIPopoverController?
- (IBAction)getPhoto4:(id)sender {
if ([UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypeSavedPhotosAlbum])
{
UIImagePickerController *imagePicker =[[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType =UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.mediaTypes = #[(NSString *) kUTTypeImage ,(NSString *)kUTTypeMovie];
imagePicker.allowsEditing = NO;
[self presentViewController:imagePicker animated:YES completion:nil];
}
}
#pragma mark -
#pragma mark UIImagePickerControllerDelegate
-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[self dismissViewControllerAnimated:YES completion:nil];
UIImage *image = info[UIImagePickerControllerOriginalImage];
float actualHeight = image.size.height;
float actualWidth = image.size.width;
float imgRatio = actualWidth/actualHeight;
float maxRatio = 320.0/480.0;
if(imgRatio!=maxRatio){
if(imgRatio < maxRatio){
imgRatio = 480.0 / actualHeight;
actualWidth = imgRatio * actualWidth;
actualHeight = 480.0;
}
else{
imgRatio = 320.0 / actualWidth;
actualHeight = imgRatio * actualHeight;
actualWidth = 320.0;
}
}
CGRect rect = CGRectMake(0.0, 0.0, actualWidth, actualHeight);
UIGraphicsBeginImageContext(rect.size);
[image drawInRect:rect];
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
// Get the data for the image
NSData* imageData = UIImageJPEGRepresentation(img, 1.0);
// Give a name to the file
IMAGE_COUNTER = IMAGE_COUNTER + 1;
NSString* incrementedImgStr = [NSString stringWithFormat: #"zTempDataFilePleaseDelete%d.jpg", IMAGE_COUNTER];
NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDirectory = [paths objectAtIndex:0];
// Now we get the full path to the file
NSString* fullPathToFile2 = [documentsDirectory stringByAppendingPathComponent:incrementedImgStr];
if(IMAGE_COUNTER == 4) {
imageView4.image = img;
photoHeight4 = img.size.height;
photoWidth4 = img.size.width;
photoPath4 = fullPathToFile2;
}
// and then we write it out
[imageData writeToFile:fullPathToFile2 atomically:NO];
}
-(void)image:(UIImage *)image
finishedSavingWithError:(NSError *)error
contextInfo:(void *)contextInfo
{
if (error) {
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle: #"Save failed"
message: #"Failed to save image"
delegate: nil
cancelButtonTitle:#"OK"
otherButtonTitles:nil];
[alert show];
}
}
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker1
{
[self dismissViewControllerAnimated:YES completion:nil];
}

Answer 1

On iPad you need to display UIImagePickerController embedded in UIPopoverController.
You can't directly display it using presentViewController:
If you are displaying camera then you can use presentViewController, else you need to use a popover for displaying the image picker in iPad.
Reference:
UIImagePickerController
So instead of:
[self presentViewController:imagePicker animated:YES completion:nil];
Use:
UIPopoverController *photoPop = [[UIPopoverController alloc]initWithContentViewController:imagePicker];
[photoPop presentPopoverFromRect:CGRectMake(100,100,300,300) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
Check these tutorials:
UIImagePickerController
UIImagePickerController in iPad

Answer 2

try this code:
in .h file implement delegate
UIImagePickerControllerDelegate,UIPopoverControllerDelegate,UINavigationControllerDelegate
in .m file:
#implementation UIImagePickerController(Nonrotating)
- (BOOL)shouldAutorotate {
return NO;
}
#end
#implementation UINavigationController (Rotation_IOS6)
-(NSUInteger) supportedInterfaceOrientations {
return [self.topViewController supportedInterfaceOrientations];
}
-(BOOL)shouldAutorotate
{
return [[self.viewControllers lastObject] shouldAutorotate];
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
return [[self.viewControllers lastObject] preferredInterfaceOrientationForPresentation];
}
#end
-(void)photoclick
{
UIImagePickerController *pckrImage=[[UIImagePickerController alloc]init];
pckrImage.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
pckrImage.allowsEditing = YES;
pckrImage.delegate=self;
// UITableViewCell *cell = [tblIncident cellForRowAtIndexPath:[tblIncident indexPathForSelectedRow]];
UIPopoverController * poppickePhoto = [[UIPopoverController alloc]initWithContentViewController:pckrImage];
poppickePhoto.delegate = self;
// poppickePhoto.popoverContentSize =CGSizeMake(320,480);
[poppickePhoto presentPopoverFromRect:yourbtn.frame inView:yourbtn.superview permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
update
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
UIImage *choosedImage = [info objectForKey:UIImagePickerControllerOriginalImage];
[picker dismissViewControllerAnimated:YES completion:NULL];
yourumageview.image=choosedImage;
[poppickePhoto dismissPopoverAnimated:YES];
}