How to implement custom 'Use' and 'Retake' button in UIImagePicker?

I have a switched the cameracontrolls off, i mean

pickerCam.showsCameraControls=NO;

and i have custom capture button which does the capture functionality,

[pickerCam takePicture];

on click of this button the delegate will be called,

- (void)imagePickerController:(UIImagePickerController *)pi didFinishPickingMediaWithInfo:(NSDictionary *)info

In开发者_JAVA百科stead i need to implement custom 'Use' and 'Retake' option , how do i do that. Thanks in advance

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1. In imagePickerController:didFinishPickingMediaWithInfo: Method save the image captured in a global varialbe
2. Add a view to overlay having Use and Retake Button,
3. In the Use target dismiss the picker.
4. In retake target remove the view having Use and Retake buttons.