Object-C中获取当前触摸点的坐标位置

//当有一个或多个手指触摸事件在当前视图或window窗体中响应
-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
NSSet *allTouches = [event allTouches];    //返回与当前接收者有关的所有的触摸对象
UITouch *touch = [allTouches anyObject];   //视图中的所有对象
CGPoint point = [touch locationInView:[touch view]]; //返回触摸点在视图中的当前坐标
int x = point.x;
int y = point.y;
NSLog(@"touch (x, y) is (%d, %d)", x, y);
}