How to give custom name to a picture in iphone

I am new to iPhone programming. Does anyone know how to give custom name to a picture which was taken using the mobile camera? After that the picture has to be saved along with that name in the photo gallery.

Can anyone figure out a solution for this?

Thanks

How do you put your name on a picture on Iphone?

Open a photo of the person that you want to add. Tap the Info button , then tap the face of the person with a question mark. Tap Tag With Name and type the person's name or tap the name if it shows up. Tap Next, then tap Done.

How can I write my name on a photo?

Click the watermark image and position it where you want on the photo. Press Ctrl+A to select the watermark and the photo, and click Picture Tools > Format > Group. Right-click the photo, click Save as Picture, and save the watermarked photo with a new name.

Add MetaData to UIImage. Same metadata of UIImage can be used to know images's information.

Refer Get Exif data from UIImage.

Refer UIImagePickerController and extracting EXIF data from existing photos