Question

I want to make a camera application in which i want to start front camera automatically and capture image without user interaction. thanks in advance.

Answer 1

I dont know how much you know about objective-c or iphone development.
so I will tell how to take photos in your iphone app.
First you should get your self aquatinted with UIImagePickerController class

http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html

here is some examples for the same from apple
http://developer.apple.com/library/ios/samplecode/PhotoLocations/

http://developer.apple.com/library/ios/samplecode/PrintPhoto/

http://developer.apple.com/library/ios/samplecode/PhotoPicker/

http://developer.apple.com/library/ios/samplecode/iPhoneCoreDataRecipes/

and next here is the code that will help you take the pics if you just place it in your .m file

- (void)selectPhotos
{
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.sourceType = UIImagePickerControllerSourceTypeCamera;
    picker.delegate = self;
    [self presentModalViewController:picker animated:YES];
    [picker release];
}

- (void)imagePickerController:(UIImagePickerController *)picker
        didFinishPickingImage:(UIImage *)image
                  editingInfo:(NSDictionary *)editingInfo
{
    imageView.image = image;
    [[picker parentViewController] dismissModalViewControllerAnimated:YES];
}

now get started.