May 25 Lecture

this week=tinder clone

push notifications, Facebook graph, geopoint, on may26

storyboards useful here

swift gesture recognizers

Selector(“wasDragged”)

for labels userInteractionEnabled is false by default. Have to set it to true

add func

func wasDragged() {

    print(“dragged")

}

wasDragged(gesture:UIPanGestureRecognizer)

summary

Two things taught

First, UIPanGestureRecognizer

Second, transforms

CGAffineTransform

CGAffineTransformMakeRotate

then there are 3 things

1. apply the transform
2. apply the inverse transform at the end