获取历史积分iOS [英] Get historcial points ios

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 UIResponder类的文档

For more info check the documentation of the UIResponder class

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