if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]){

    UIImagePickerController *picker = [[UIImagePickerController alloc] init];

    picker.delegate = self;

    picker.allowsEditing = YES;

    picker.sourceType = UIImagePickerControllerSourceTypeCamera;

    [self presentViewController:picker animated:YES completion:NULL];

}

else{


    UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Camera Unavailable"
                                                   message:@"Unable to find a camera on your device."
                                                  delegate:nil
                                         cancelButtonTitle:@"OK"
                                         otherButtonTitles:nil, nil];
    [alert show];

    alert = nil;

}