如何在iPhone中获取从库中选择的多个图像的路径?

I am new in iPhone App Development. In my code, i am able to select multiple images from the library and get the path of only 1 image. Then i am creating a copy of that image in Documents directory in a folder called "images" and trying to zip it. Now i want to get the path of all those selected multiple images, copy them in documents directory in the same folder "images" and i want to zip them later. Please tell me how i can do the above mentioned tasks in my code. This is how my code looks as of now:I am new in iPhone App Development. In my code,