勾app一个类所有方法的执行顺序

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具体请看帖子

前言

打日志的printf 改成 nslog

原理

把类及实例方法的实现都交换给了 _objc_msgForward，然后在每个类/元类都加上了forwardInvocation:方法:

 `class_addMethod(hookClass, @selector(forwardInvocation:), forwardInvocationImpl, "v@:@");`
利用objc_msgSend的快速消息转发机制来实现调回原方法。

微信

[BigBang hookClass:@"WCPayLogicMgr"];

[BigBang hookClass:@"WCRedEnvelopesLogicMgr"];

[BigBang hookClass:@"ContactUpdateHelper"];

[BigBang hookClass:@"WCRedEnvelopesNetworkHelper"];

[BigBang hookClass:@"WCRedEnvelopesReceiveHomeView"]

例子

%hook MicroMessengerAppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    // 打印某个类的所有方法的，查看所有方法的执行顺序

    [KNHook hookClass:@"WCRedEnvelopesMakeRedEnvelopesViewController"];
    //  清空剪切板
    UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
    [pasteboard setString:@""];
    NSLog(@"pasteboard:%@", pasteboard.string);

    return %orig;
}
%end

观察到

Nov  2 15:30:12 iPhone WeChat[2589] <Warning>: KNHooklog :-(void)refreshViewWithData:(have 1 value)
    return:(null)
    value1:WCRedEnvelopesControlData--><WCRedEnvelopesControlData: 0x17d94b10>
    object:<WCRedEnvelopesMakeRedEnvelopesViewController: 0x175fa800>
     ##########################################