Touch

A component of one of our upcoming apps is a Scramble type game where letters are rearranged to solve the word. I had a fantastic idea to use a UITableView flipped on it’s side with reordering enabled to make up the bulk of the Scramble reordering functionality. It worked without a hitch. During development we found that having the cell’s reordering grip only taking up a 44×44 square wasn’t very effective when our letters were a lot bigger, you would have to have your finger exactly in that small area in order to move the letters around. With a bit of magic I managed to make the reoder grip fill the entire cell, and this is how you do it:

I have recently had a project where I had to do some image processing on an image based on where a user touches an image (in a UIImageView). Getting the touch coordinates was easy enough, but the challenge was turning those touch coordinates into pixel coordinates. Depending on the way the UIImageView is set to