*******view 一些方法
#import "HMView.h" @implementation HMView
// 一个完整的触摸过程
// touchesBegan -> touchesMoved -> touchesEnded /*
NSArray 集合 有序
NSSet 无序 */ // 触摸开始
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
// 获取一个UITouch
UITouch *touch = [touches anyObject]; // NSLog(@"%s----%d",__func__,touches.count);
// NSLog(@"%d",touch.tapCount);
// NSLog(@"%d",touch.phase);
}
// 手指移动
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
// 获取一个UITouch
UITouch *touch = [touches anyObject]; // 获取当前的位置
CGPoint current = [touch locationInView:self];
// 获取上一个点
CGPoint pre = [touch previousLocationInView:self]; // x轴偏移量
CGFloat offsetX = current.x - pre.x;
CGFloat offsetY = current.y - pre.y;
NSLog(@"%@",NSStringFromCGPoint(current)); // 获取视图的center
CGPoint center = self.center;
center.x += offsetX;
center.y += offsetY;
self.center = center; } // 触摸结束
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
// 获取一个UITouch
UITouch *touch = [touches anyObject];
// NSLog(@"%d",touch.phase);
// NSLog(@"%s----%p",__func__,touch); } // 触摸被打断 比如打电话过来
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{ } @end