滑动手势的学习pan
2017-03-13 本文已影响39人
跬步千里_LenSky
//在触发pan 方法的里面进行的一些状态与坐标值得判断 还有一些代理方法 暂时不写
-(void)panInAction:(UIPanGestureRecognizer *)pan
{
if (pan.state==UIGestureRecognizerStateBegan) {
_begainPoint = [pan locationInView:self.view];
}else if (pan.state ==UIGestureRecognizerStateEnded){
}else if (pan.state==UIGestureRecognizerStateChanged){
//velocityInView 速度 translationInView 获取到的是手指移动后，在相对坐标中的偏移量（相对于起始点的偏移量）
NSLog(@"%f---%f---%f-",[pan locationInView:self.view].x,[pan translationInView:self.view].x,[pan velocityInView:self.view].x);
if ([pan locationInView:self.view].x>_begainPoint.x) {
NSLog(@"右");
}else if([pan locationInView:self.view].x<_begainPoint.x) {
NSLog(@"左");
}
_begainPoint =[pan locationInView:self.view];
}
}
