[iPhone Tutorial] Create your own iPhone Stopwatch App
Let’s take our existing Clock App we created during our previous tutorials and turn it into a stopwatch. It will look similar to the standard iPhone Clock implementation. Open the ViewController.xib file and move rgw label closer to the top to make a little room for a Start/Stop button at the bottom. Now drag a new button over, change the text to “START”, and size it so it is about the width of the label. Switch to the Sizing inspector and change the Autosizing to stick to the bottom edge of the view. The button and Autosizing should look like Figure A . Figure A Bring up the assistant editor as you did in the previous article so that an action can be added when the button gets tapped. Draw a connection by holding down the control key while dragging from the button to below the label property and release. This time you need to change the connection type to Action, set the name to “onButton” and change the Type to UIButton. Make sure the popup looks like Figure B be...