app crashes on image capture - iphone

Question

I am capturing images through camera. Then I move to next controller where I display the captured image. I go back to capture image screen and this cycle continues for 10 to 15 times. After this when I try to capture the image the app crashes by giving "low memory warning".
Here is the code:
- (IBAction) takePhoto:(id) sender
{
/*
tempControl *intermediate=[[tempControl alloc] initWithNibName:#"tempControl" bundle:nil];
[self.navigationController pushViewController:intermediate animated:YES];
[intermediate release];
*/
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){
imagePickerController= [[UIImagePickerController alloc] init];
[imagePickerController setMediaTypes:[NSArray arrayWithObjects:(NSString *)kUTTypeImage, nil]];
imagePickerController.delegate = self;
imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera;
[self presentModalViewController:imagePickerController animated:YES];
}
else{
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:#"Camera Alert" message:#"Device Lacks Camera" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alert show];
[alert release];
alert = nil;
}
}
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingImage:(UIImage *)image
editingInfo:(NSDictionary *)editingInfo{
[picker dismissModalViewControllerAnimated:NO];
[picker release];
picker =nil;
/*
cropReciept *recieptToCrop=[[cropReciept alloc] initWithNibName:#"cropReciept" bundle:nil];
[recieptToCrop setReciept:image];
[self.navigationController pushViewController:recieptToCrop animated:YES];
[recieptToCrop release];
*/
OCRDemoViewController *recieptToCrop=[[OCRDemoViewController alloc] initWithNibName:#"CropTestViewController" bundle:nil];
[recieptToCrop setImageToCrop:image];
if ([self.selectedTicketType isEqualToString:#"MAXI QuickPick"]) {
recieptToCrop.selectedValueOfTicket=50;
recieptToCrop.drawNumber=self.selectedDrawNumber;
}
else if ([self.selectedTicketType isEqualToString:#"JUMBO QuickPick"]) {
recieptToCrop.selectedValueOfTicket=36;
recieptToCrop.drawNumber=self.selectedDrawNumber;
}
else if ([self.selectedTicketType isEqualToString:#"MEGA QuickPick"]) {
recieptToCrop.selectedValueOfTicket=24;
recieptToCrop.drawNumber=self.selectedDrawNumber;
}
else if ([self.selectedTicketType isEqualToString:#"REGULAR QuickPick"]) {
recieptToCrop.selectedValueOfTicket=12;
recieptToCrop.drawNumber=self.selectedDrawNumber;
}
else if ([self.selectedTicketType isEqualToString:#"SUPER QuickPick"]) {
recieptToCrop.selectedValueOfTicket=18;
recieptToCrop.drawNumber=self.selectedDrawNumber;
}
[self.navigationController pushViewController:recieptToCrop animated:YES];
[recieptToCrop release];
recieptToCrop=nil;
}

Answer 1

Do not release the picker in the delegate callback, but rather dispatch a block to do it in the next run loop (you can use performSelector after:0 too).
Also use Instruments ObjectAlloc and Leaks to look at what is not getting dealloced.

Answer 2

You need to resize image and then use it.The image clicked from camera is approx. more than 2 mb.Try resizing image captured from camera and then using it.
You need to do:-
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingImage:(UIImage *)image
editingInfo:(NSDictionary *)editingInfo{
UIGraphicsBeginImageContext(size);//640*920 or what ever you think appropriate
[image drawInRect:CGRectMake(0, 0, size.width, size.height)];
UIImage *finalImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
[picker dismissModalViewControllerAnimated:NO];
[picker release];
picker =nil;
}
And now use finalImage instead of image