Objective C - 错误:线程1:EXC_BAD_ACCESS代码= 2

Question

我在尝试调用方法时遇到错误.

方法

- (void)setSpeed:(GLKVector2)newSpeed{  //Error message (see title) points to here
    self.speed = GLKVector2Make(newSpeed.x, newSpeed.y);
}

电话

[self setSpeed:GLKVector2Make(0, 0)];

有什么想法吗？

Answer 1

试着写

_speed = GLKVector2Make(newSpeed.x, newSpeed.y);

要么

speed = GLKVector2Make(newSpeed.x, newSpeed.y);

代替

self.speed = GLKVector2Make(newSpeed.x, newSpeed.y);