iOS开发模拟限速

1. 模拟器网速调整：
限制时输入下面两行，根据需要修改下面的数字：
sudo ipfw pipe 1 config bw 350kbit/s plr 0.05 delay 10000ms;
sudo ipfw add pipe 1 dst-port http
不想再去限制网速是，输入下面的命令行:
sudo ipfw flush
1.2 mac下限制网速：
Advanced OS X users know that Darwin comes with ipfw, which can be used to set up a custom firewall. This same service however can be used to also limit bandwidth on specific ports.
Example:sudo ipfw pipe 1 config bw 15KByte/screates a pipe that only allows up to 15KB/s to go through.
Then:sudo ipfw add 1 pipe 1 src-port 80will attach that pipe to the outgoing traffic on port 80, effectively limiting the outgoing traffic of the web server.sudo ipfw delete 1will remove the pipe from the port.
[kirkmc adds: I haven't tested this. Just make sure you remember to turn this off when you no longer need it!]
详情可看：http://nshipster.com/network-link-conditioner/
该工具的Apple官方地址：https://developer.apple.com/downloads/index.action?q=Network%20Link%20Conditioner#
2. 子视图超出父视图部分仍然响应点击事件的处理
- (UIView*)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
    UIView *view = [super hitTest:point withEvent:event];
    for (UIView *subview in self.subviews) {
        if (view != nil &&view.userInteractionEnabled)
break;
        CGPoint newPoint = [self convertPoint:point toView:subview];
        view = [subview hitTest:newPoint withEvent:event];
    }
    return view;
}