writing a text into xml file on click of a button

can any one tell me the procedure to write a text on to the xml file from the text box ,on click of the开发者_如何学Python button.As im new to the iphone applications,please help me out

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Check out the following answers.

For "light-weight", plain text writing: Writing and reading text files on the iPhone

A more elaborate approach: Writing files on iPhone

Good luck!