本文介绍了获取历史积分iOS的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在 iPhone
中绘制时,是否有任何函数或算法可以捕捉所有要点?像在Android中一样,这里有历史要点。
Is there any function or algorithm to catch all the points when drawing in iPhone
? Like in Android, where we have gethistoical points.
推荐答案
检查方法 touchesBegan:withEvent:
, touchesMoved:withEvent:
, touchesEnded:withEvent:
和 touchesCancelled: withEvent:
以检测运动
Check the methods touchesBegan:withEvent:
, touchesMoved:withEvent:
, touchesEnded:withEvent:
and touchesCancelled:withEvent:
to detect movements
例如,使用-touchesMoved:withEvent方法:
For example using the method -touchesMoved:withEvent:
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
UITouch *touch = [touches anyObject];
CGPoint currentPosition = [touch locationInView:self.view];
NSLog(@"%@", NSStringFromCGPoint(currentPosition));
}
有关更多信息,请参见
For more info check the documentation of the UIResponder class
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