iOS app with camera popup - ios

Question

I am developing an iOS 7 app in xcode 5. I am using the camera functionality. When the user presses the camera button in my app, I want to give him a choice: take a new picture or choose a picture from the "photostream". I want to show a popup with the choice like "WhatsApp" does, or like the Apple Message app.
I thought; I create an Table View Controller with a section and three cells: take a picture, choose from "photostream" and cancel. I set this section at the bottom of the Table View and make the background transparent. But is does not work ;)
I also searched on Google, but I did not found anything that could help me.
Can anyone tell me how I could do it?

Answer 1

Try this. You have to use UIActionSheetDelegate and UIImagePickerControllerDelegate
- (IBAction)changePhotoButtonPressed:(id)sender {
UIActionSheet *actionSheet=[[UIActionSheet alloc] initWithTitle:#"MY APP"
delegate:self
cancelButtonTitle: nil
destructiveButtonTitle: nil
otherButtonTitles:#"Take From Camera",#"Select From Library", #"Cancel", nil];
actionSheet.actionSheetStyle = UIActionSheetStyleBlackOpaque;
actionSheet.destructiveButtonIndex=2;
[actionSheet showInView:[UIApplication sharedApplication].keyWindow];
}
UIActionSheet Delegate
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
if (buttonIndex==0) {
[self takePictureFromCamera];
}
else if (buttonIndex==1) {
[self pickImageFromLibrary];
}
}
Other Methods:
-(void) pickImageFromLibrary
{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
UIImagePickerController* imgPicker=[[UIImagePickerController alloc] init];
self.imagePicker = imgPicker;
//UI Customization
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
[[self.imagePicker navigationBar] setTintColor:[UIColor whiteColor]];
}
self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
self.imagePicker.delegate = self;
[self presentViewController:self.imagePicker animated:YES completion:nil];
} else {
NSLog(#"Attempted to pick an image with illegal source type '%d'", UIImagePickerControllerSourceTypePhotoLibrary);
}
}
-(void) takePictureFromCamera
{
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
UIImagePickerController* imgPicker=[[UIImagePickerController alloc] init];
self.imagePicker = imgPicker;
self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
self.imagePicker.delegate = self;
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7.0) {
[[self.imagePicker navigationBar] setTintColor:[UIColor whiteColor]];
}
[self presentViewController:self.imagePicker animated:YES completion:nil];
} else {
NSLog(#"Attempted to pick an image with illegal source type '%d'", UIImagePickerControllerSourceTypePhotoLibrary);
UIAlertView* alert = [[UIAlertView alloc] initWithTitle:#"MY APP" message:#"CAMERA_NOT_AVAILABLE" delegate:self cancelButtonTitle:#"OK" otherButtonTitles: nil];
[alert show];
}
}

Answer 2

You should use an UIImagePickerController and set its type to either UIImagePickerControllerSourceTypeCamera or UIImagePickerControllerSourceTypePhotoLibrary.
And for the popup with the choices, use an UIActionSheet.
You can have a look at this sample code form Apple for the UIImagePickerController:
https://developer.apple.com/library/ios/samplecode/PhotoPicker/Introduction/Intro.html