title: how to use the progress bar in the iphone app
body: <p>In my iPhone app I am downloading some data from an FTP server. To show the action I am using <code>UIActivityIndicator</code>. If I put <code>UIProgressView</code> there instead of <code>UIActivityIndicator</code>, it will be more appropriate. How do I use <code>UIProgressView</code> while downloading some data? Can anybody give me a tutorial link or example code? Thanks in advance.</p>