Touch Move
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
if (!dragEnable) {
return;
}
UITouch *touch = [touches anyObject];
beginPoint = [touch locationInView:self];
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
if (!dragEnable) {
return;
}
UITouch *touch = [touches anyObject];
CGPoint nowPoint = [touch locationInView:self];
float offsetX = nowPoint.x - beginPoint.x;
float offsetY = nowPoint.y - beginPoint.y;
self.center = CGPointMake(self.center.x + offsetX, self.center.y + offsetY);
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
{
}
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
}
文章来源: zzzili.blog.csdn.net，作者：清雨小竹，版权归原作者所有，如需转载，请联系作者。
原文链接：zzzili.blog.csdn.net/article/details/8265506
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