touchesMoved <-我只能看到y点

问题描述

| 为什么我只能看到NowPoint的\“ y \”组件在变化，[\“ x \”组件始终是\“ 0 \”]？

- (void) touchesMoved: (NSSet *) touches withEvent: (UIEvent *) event {
    [super touchesMoved:touches withEvent:event];

    CGPoint NowPoint = [[touches anyObject] locationInView:self.view];
    CGPoint prevPoint = [[touches anyObject] prevIoUsLocationInView:self.view];

    NSLog(@\"x %d,y %d\",NowPoint.x,NowPoint.y);
}

    

解决方法

NSLog（@ \“ x％d，y％d \”，nowPoint.x，nowPoint.y）; 更改为...

NSLog(@\"x %0.02f,y %0.02f\",nowPoint.x,nowPoint.y);