I think its very interesting that the iPhone has decided to use drag and drop for screen scrolling. I wonder how they will support the more common uses such as text range selection, which is a pretty important feature. Have they shot themselves in the foot in terms of making the more common uses of drag and drop less intuitive?
That's a really interesting question Dan. It seems using touch for the zoom and scrolling functionalities is crashing with the standard selection functionality, and this is probably the reason why this functionality is not offered in the current version of iPhone.
They may have to introduce interaction modes, which will complicate the interaction and learnability of the interface. It's the age old question of what the user's intention is. In this case: scrolling or selecting range?
I haven't used an iPhone much, but Fujie just got a MacBook and I like its multi-touch scrolling. Horizontal scrolling was my pet peeve, but not with multi-touch. I wonder why Apple didn't do the same thing on the iPhone.
Not zoom. Fujie's new MacBook uses 1 finger to drag the mouse, and 2 fingers to scroll. The 2 fingers are together and parallel with the bottom of the pad, so I use my middle and ring fingers. This scrolls the window with the mouse vertically or horizontally, like the scroll wheel on the mouse scrolls vertically.
This is consistent with scrollbars, but opposite the iPhone. When you move the scrollbar down, the window contents move up. Moving two fingers down on the MacBook moves the scrollbar down. But on the iPhone, when you move one finger down, it moves the contents down.
I guess the iPhone doesn't have any scrollbar or mouse. It makes sense to get rid of the mouse for a touch screen, but Apple still could have used 2 fingers for scrolling (or moving, assuming it works in any direction), leaving 1 finger for drag and drop. The only problem is that it would be opposite of scrollbars.
Sorry it took so long for me to reply. Ning hasn't sent me any email.