how to access NSObject class from naviagation based app?
<p>Im thinking a program that has made up by navigation bar with multiple views. so basically I want to access data(&amp; storing data) to one same object class through the whole stack of navigation. for example, 1. choose a picture from firstview, store the picture to the object class. 2. change to other view and access the picture from the smae object class. 3. as a next step on the other view, also can access and store the data to this object class. </p>

<p>what I want to know now is how to maintain and access the same file from the all different levels of the program. please give me some tips! </p>
